All of the following statements are the part of Darwin's theory of natural selection exceptGenetic variation exists among individuals in a population.The size of most populations remains relatively constant, despite the fact that more offspring are produced than are needed to maintain it.Early settlers saved seed only from the most productive crop plants to plant the following year.Disease, competition, and other environmental forces tend to eliminate the individuals in a population that are less adapted to their environment.Individuals that are best adapted to their environment tend to pass on heritable advantageous characteristics to their offspring.

Answers

Answer 1

Option a and e do not fit within the Darwin hypothesis because it holds that natural evolution occurs through heredity.The Darwin's Theory is considered as a great theory all over the world.

b) Most populations maintain a fairly steady size despite having more offspring than are required to keep them alive

b) The most fruitful agricultural plants were the ones from which the early settlers stored seed to sow the next year.

d)The members of a population who are less adapted to their environment likely to be eliminated by disease, competition, and other environmental forces.

Based on his observations made while travelling the world by sea, Charles Darwin came to the following conclusion that the nature chooses the organism that will thrive in a certain setting.More suited to their environment, organisms will endure.

To know more about Darwin's theory please check the following link

https://brainly.com/question/29450410

#SPJ4


Related Questions

A DNA template having the base sequence 3'-A-G-A-T-G-A-5' would produce a mRNA with a base sequence of what?

Answers

The complementary base pairing laws of DNA and RNA can be used to determine the mRNA base sequence generated from the provided DNA template sequence.

Thymine (T) is replaced by uracil (U) as the complimentary nucleotide for adenine in RNA (A). The mRNA sequence would be as follows:

5'-U-C-U-A-C-U-C-3'

Whereas mRNA is generated in the 5' to 3' direction and the DNA template sequence is read in the 3' to 5' direction. As a result, the nucleotides in the mRNA sequence are arranged in the DNA template sequence's reverse complement.

DNAThe complementary base pairing rules between DNA and RNA are observed during the transcription of DNA into RNA. Guanine (G) pairs with Cytosine (C) in DNA and RNA, while Adenine (A) pairs with Uracil (U) in RNA.The DNA template's 3'-A-G-A-T-G-A-5' sequence is provided. Using the complementary base pairing rules, we must swap each base out for its RNA counterpart in order to produce the mRNA sequence. In the DNA template sequence, this means that:Guanine (G) pairs with Cytosine, while Adenine (A) pairs with Uracil (U) (C)As a result, the following mRNA sequence would be produced from the provided DNA template sequence:5'-U-C-U-A-C-U-C-3'Keep in mind that the nucleotides in the mRNA sequence are arranged in the DNA template sequence's reverse complement.

learn more about DNA here

https://brainly.com/question/2131506

#SPJ1

A bacterial culture is growing exponentially. At 7:00 AM, the number of cells was estimated to be 5.5 X 104 cells. At 11:00 AM, the number of cells increased to 8.7 X 107 cells. What is the generation time in minutes of the bacteria? Please assume we are in the log phase of growth for this bacterial population. Please show your work.

Answers

To find the generation time, we need to use the formula:

N = N0 x 2^(t/g)

where:
N0 = initial number of cells
N = final number of cells
t = time elapsed
g = generation time

We can use the information given to solve for g.

At 7:00 AM, N0 = 5.5 x 10^4 cells
At 11:00 AM, N = 8.7 x 10^7 cells
The time elapsed is 4 hours, or 240 minutes.

Substituting these values into the formula, we get:

8.7 x 10^7 = 5.5 x 10^4 x 2^(240/g)

Dividing both sides by 5.5 x 10^4, we get:

1582.7 = 2^(240/g)

Taking the logarithm of both sides (base 2), we get:

log2(1582.7) = 240/g

Solving for g, we get:

g = 240 / log2(1582.7)

Using a calculator, we find that g is approximately 29.3 minutes. Therefore, the generation time of the bacteria is approximately 29.3 minutes.

The following terms all relate to phototrophy but have different meanings. Match each one with its correct definition. Definitions (5 items) (Drag and drop into the appropriate area below) Light energy is converted to chemical energy and used to fix CO2. Light energy is coupled to splitting of a molecule (e.g., water) Light energy is used to separate an electron from a molecule. Light absorption raises an electron to a higher energy state. 7 Terms Photosyn Photoion Photolysi Photosys Photoexc

Answers

Photosynthesis is the conversion of light energy into chemical energy, which takes the form of sugars.

Oxygen is generated as a byproduct during the process of converting carbon dioxide and water into glucose (or other carbohydrates) using light energy.

The splitting of water molecules that occurs during photosynthesis as a result of a chlorophyll molecule absorbing light energy results in the release of protons, electrons, and developing oxygen. A procedure called as photolysis is used to water. The thylakoid lumen is where it takes place.

When an atom absorbs energy from its surroundings, it changes from its ground state to an excited state. After absorbing the energy, the electron moves on to a higher energy state.

Learn more about Photosynthesis here:

https://brainly.com/question/29764662

#SPJ1

Answer:

Photosynthesis: Light energy is converted to chemical energy and used to fix CO2

Photoionization: Light energy is used to separate an electron from a molecule.

Photolysis: Light energy is coupled to splitting of a molecule (e.g., water)

Photo system: Light absorbing pigments coupled to an electron transport chain.

Photoexcitation: Light absorption raised an electron to a higher energy state.

Everything about TB in Life Sciences form

Answers

The bacteria Mycobacterium tuberculosis is the one that causes tuberculosis (TB). Yet, TB bacteria can target any region of the body, including the kidney, spine, and brain. The bacteria typically assault the lungs. A TB bacteria infection does not always result in illness.

How can one contract Mycobacterium tuberculosis?The bacteria Mycobacterium tuberculosis is the one that causes tuberculosis (TB). Yet, TB bacteria can target any region of the body, including the kidney, spine, and brain. The bacteria typically assault the lungs. A TB bacteria infection does not always result in illness. Individuals can contract tuberculosis (TB) through airborne transmission. TB bacteria can spread by speech, singing, or coughing from a person who has TB disease of the lungs or throat. These germs could infect surrounding individuals through inhalation.People get tuberculosis (TB) from a bacteria called Mycobacterium tuberculosis (M. tuberculosis). TB is a disease that mostly affects the lungs, despite the fact that it can also affect other parts of the body.

To learn more about Mycobacterium tuberculosis, refer to:

https://brainly.com/question/29995027

in the atmosphere are several distinct global wind patterns. where there are low pressure belts, the air is ___

Answers

In the atmosphere, there are several distinct global wind patterns. When there are low-pressure belts, the air is rising.

Air in low-pressure belts rises since the atmospheric pressure is much lower than the atmospheric pressure around it. When the air gets warmed up, it rises, and it reduces the pressure in the surrounding air. In the tropics, the intertropical convergence zone, or ITCZ is a zone of low-pressure belts where the trade winds converge. At the equator, it rises, cools down, and goes towards the poles. It is the area that receives the most rainfall on earth since the warm air has more moisture content that condenses as it rises and cools down. This belt is very important for the earth's climate since it is responsible for regulating weather patterns across the planet. Winds move from high pressure to low pressure, and that creates air currents. Warm air rises, and cool air sinks, and that creates convection cells. These convection cells create high and low-pressure belts around the earth, and it creates the weather patterns that we see daily.

To learn more about Atmosphere :

https://brainly.com/question/921955

#SPJ11

examine the figure above depicting the preparatory step and the krebs cycle, and identify statements that correctly describe these processes.

Answers

The following claims about the Krebs cycle and the preparation step are true based on the comments made:

1- The coenzymes NAD and FAD receive the potential energy from the pyruvate.

2- Carbons derived from pyruvic acid become CO2.

3- Both eukaryotes and prokaryotes engage in this mechanism in the mitochondria.

4- During each turn of the Krebs cycle, the equivalent of one ATP is produced.

6- five  oxidation-reduction processes are represented.

7- The cyclic character of this process is made possible by the regeneration of the oxaloacetic acid that accepts the acetyl group.

As oxygen, not CO2, serves as the ultimate electron acceptor in the electron transport chain, Proposition 5 is untrue.

Thesis 8 is somewhat true, but it should be noted that since one glucose molecule produces two pyruvic acid molecules as a result of glycolysis, two cycles of the Krebs cycle are necessary to digest them.

Learn more about “ Krebs cycle “ visit here;

https://brainly.com/question/13153590

#SPJ4

complete Question -

Examine the figure above depicting the preparatory step and the Krebs cycle, and identify statements that correctly describe these processes. Select all statements that correctly describe the preparatory step and the Krebs cycle.

1- The potential energy in the pyruvate is transferred to coenzymes NAD and FAD

2- Carbons from pyruvic acid end up as CO2

3- This process occurs in mitochondria in both eukaryotes and prokaryotes

4- The equivalent of one ATP is made for each turn of the Krebs cycle

5- CO2 serves as the electron acceptor

6- There are five oxidation-reduction reactions depicted

7- The oxaloacetic acid that accepts the acetyl group is regenerated, enabling the cyclic nature of this process

8- it takes two turns of the Krebs cycle to process the pyruvic acid molecules resulting from the glycolysis of one glucose molecule

An I'm important change during the adolescence province the beginning of a motorcycle to prepare the uterus receive and possible the fertilized egg this motorcycle school the menstrual cycle activity every blank days and I guess this from one of the blank and begins to travel down the blank blank the blank of innate the release of x 1 month the left blank releases an egg and the next month the right blank returns the release of an egg from ovary is referred to as blank during this Time the blanks with undergoing 10 days The walls of the blank feel with the blank and become thicker if the egg travels through the blank blank become fertilized by a blank blank then the eagle and plant itself in the lining of the blank and begin the process of development which can lead a new life if the egg is a blanket with break down and leave the body with the use blank and fishes that have collected in the blank with the blood and tissues leave the body through the blank of an average blank the period of time this is called blank

Answers

The filled gap passage is given below

An important change during adolescence is the onset of a menstrual cycle to prepare the uterus to receive and possibly nourish a fertilized egg. This cycle occurs every 28 days and is governed by the release of hormones from one of the ovaries, which begins to travel down the fallopian tube towards the uterus. The ovaries alternate each month, with the left ovary releasing an egg one month, and the right ovary the next. The release of an egg from the ovary is referred to as ovulation. During this time, the uterus undergoes 10 days of preparation. The walls of the uterus fill with blood and become thicker. If the egg travels through the fallopian tube and becomes fertilized by a sperm cell, then the zygote can implant itself in the lining of the uterus and begin the process of development, which can lead to a new life. If the egg is not fertilized, the lining of the uterus breaks down and leaves the body with the use of blood and tissues that have collected in the uterus. They leave the body through the va/g/ina. On average, the period of time this process takes is five days and is called menstruation.

What is the adolescence  stage about?

During adolescence, girls undergo changes in their reproductive system that enable them to conceive and bear a child. One of the significant changes is the onset of a menstrual cycle, which is regulated by hormones released from the ovaries. The cycle prepares the uterus to receive and nourish a fertilized egg, which can develop into a baby if implanted in the uterine lining.

In summary, If the egg is not fertilized, the lining of the uterus breaks down and leaves the body through the vagina, which is known as menstruation. This process occurs every 28 days, on average, and is an essential part of the female reproductive system.

Read more about adolescence  here:

https://brainly.com/question/14669277

#SPJ1

See complete text below

An  important change during the adolescence province the beginning of a motorcycle to prepare the uterus receive and possible the fertilized egg this motorcycle school the menstrual cycle activity every blank days and I guess this from one of the -----and begins to travel down the----   -------  the  -----of innate the release of x 1 month the left ----releases an egg and the next month the right ------returns the release of an egg from ovary is referred to as -----during this Time the ----with undergoing 10 days The walls of the ----feel with the ----and become thicker if the egg travels through the ---   --- become fertilized by a --- ---  then the eagle and plant itself in the lining of the ----- and begin the process of development which can lead a new life if the egg is a blanket with break down and leave the body with the use ----and fishes that have collected in the ----with the blood and tissues leave the body through the ----of an average ----the period of time this is called ---

matching group of answer choices essential amino acid [ choose ] nutritional genomics [ choose ] denaturation [ choose ] antibodies

Answers

The essential amino acids are the eight amino acids that our bodies cannot produce and must get from the food we consume.

Essential amino acids must be consumed via diet because the body cannot make them itself. Nutritional genomicsNutritional genomics is the study of how our genes interact with nutrients and how those interactions influence our health. Nutritional genomics aims to provide personalized dietary recommendations that take into account an individual's genetic makeup. DenaturationDenaturation refers to the alteration of a protein's structure due to changes in temperature, pH, or exposure to chemicals.

Denaturation frequently leads to protein dysfunction, as the protein can no longer perform its original function. AntibodiesAntibodies are proteins made by the body's immune system that assist in recognizing, attacking, and removing foreign substances such as bacteria and viruses. Antibodies bind to antigens, which are molecules on the surface of a pathogen that cause the immune system to react.

For such  more questions on  amino acid:

brainly.com/question/14351754

#SPJ11

Drag the labels to identify the correct sequence in the activation of natural killer cells and how they kill their cellular targets. Reset Help Secretion Perfor Recognition and Adhesion Realignment of Golgi apparatus ut Lys of norma C We for AD Next

Answers

After labelling the cells to identify the correct sequence in the activation of natural killer cells and how they kill their cellular targets, we have the following when everything is arranged in the right order:

1) T cells – T cells are the immune system's first line of defence against foreign invaders. They also produce cytokines, which are biological agents that stimulate the immune system's other cells.

Cytotoxic T cells, helper T cells, regulatory T cells, and memory T cells are some examples of T cells.

2) The B cell. A virus or bacteria that has invaded the body can be killed by antibody molecules that are produced by B cells.

a) Plasmodial cells

3) NK cells: These immune cells have granules, which are tiny particles that contain enzymes that can destroy cancerous or virus-infected cells. A specific kind of white blood cell is an NK cell. also known as NK-LGL and natural killer cell. Enlarge. growth of blood cells

To know more about killer cells please check the following link

https://brainly.com/question/30554106

#SPJ4

Researchers studying the evolutionary relationships of three species of snails collected the data shown in Table 1.
Which of the following data sets is most likely to provide reliable information about the evolutionary relationships among these three snail species?
Location of fossils and shell orientation

Answers

Among the information needed to determine evolutive relationships between taxonomic groups, paleontological and morpholocal evidences are considered. Location of fossils and Shell orientation.

How to determine evolutive relationships between taxonomic groups?

Precise information must be recompiled to establish evolutive relationships between different taxonomic groups.

Evidence of different natures can be used to make these connections, for instance,

paleontological evidence, which provides information about the species distribution in different periods,morphological evidence, which refers to the shape and its function,genetic evidence, which is based on molecular comparisons.

According to this framework, the data sets that most likely provide reliable information about the evolutionary relationships among these three snail species are

Location of fossils ⇒ paleontological evidenceShell orientation ⇒ morphological evidence

Shell composition is not useful because the three species are composed of calcium carbonate.

DNA is not useful either because it is different for all of them.

You can learn more about evolutive relationship evidence at

https://brainly.com/question/19830690

#SPJ1

i need help please help me

1) What antibiotics are usually effective against Staphylococcus aureus infections?
A. lincomycin, clindamycin
B. erythromycin, clarithyromycin.
C. metronidazole, trimetoprim.
D. cefaclor, cefuroximaxetil.
E.oral flucloxacillin,erythromycin.

2) If facial boil is not fluctuant the surgeon should be prescribing:
A. antibiotics and local application which relieves discomfort, helps localize the
infection, and promotes drainage.
B. resolvents and physiotherapy.
C. incision and drain of heart with antibacterial therapy.
D. needle aspiration and antihistamines.
E. coldaplication.

3) To which of the following spaces can infection directly spread from a lower wisdom
tooth:
A. submasseteric, pterydomaxillary, submandibular.
B. submasseteric, pterydomaxillary, sublingual.
C. pterygomaxillary, parotid, sublingual.
D. submandibular, sublingual, pterygopalatine pit.
E. submasseteric, pterygopalatine pit.

4) Furunculosis (multiple crops of boils) is associated with:
A. atopic dermatitis, excoriations, abrasions.
B. malnutrition, heart failure, drug addiction, severe generalized skin disease, and prolonged steroid therapy.
C. folliculitis and acne vulgaris.
D. diabetes mellitus, obesity, immune compromise as with HIV, blood dyscrasias,
and treatment with immunosuppressive drugs.
E. scabies.

5) The boil of upper lip is more dentigerous (reffers to possible complications) for patient because:
A. soft tissues in this region have low level antimicrobial resistance.
B. skin of upper lip very often is damaged.
C. fatty tissues of upper lip and surrounding tissues have intensive blood supply and innervation.
D. facial vein has anastomoses with vessels and sinuses of brain.
E. in the skin of the upper lip a lot of hair follicles.

Answers

Oral flucloxacillin and erythromycin are usually effective against Staphylococcus aureus infections. Option E is correct.

What are antibiotics?

Antibiotics are medicines used to treat bacterial infections by killing or inhibiting the growth of bacteria. They work by targeting specific components of bacterial cells, such as cell walls, protein synthesis, or DNA replication. Different antibiotics are effective against different types of bacteria, and the choice of antibiotic depends on the type of infection, the severity of the infection, and other factors such as allergies and potential drug interactions. One of the first antibiotics to be discovered was penicillin, which was discovered by Scottish scientist Alexander Fleming in 1928.

For the remaining questions:

A. Antibiotics and local application which relieves discomfort, helps localize the infection, and promotes drainage are usually prescribed if a facial boil is not fluctuant.B. Infection can directly spread from a lower wisdom tooth to submasseteric, pterygomaxillary, and sublingual spaces.D. Furunculosis (multiple crops of boils) is associated with diabetes mellitus, obesity, immune compromise as with HIV, blood dyscrasias, and treatment with immunosuppressive drugs.C. The boil of the upper lip is more dentigerous (refers to possible complications) for the patient because the fatty tissues of the upper lip and surrounding tissues have an intensive blood supply and innervation.

To learn more about antibiotics, visit:

https://brainly.com/question/10868637

#SPJ1

what types of energy are in a battery-powered radio?
what types of energy are in a hydropower dam?
what types of energy are in using an unplugged iphone?

Answers

In a battery-powered radio, the energy is in the form of chemical potential energy stored in the battery, which is converted into electrical energy to power the radio's circuitry and speakers.

In a hydropower dam, the energy is in the form of kinetic energy of the moving water, which is converted into electrical energy by turbines that spin generators.

Using an unplugged iPhone does not involve any energy, as the phone is not in use and is not consuming or producing any form of energy.

What is energy?

Energy is a fundamental property of matter and can exist in many forms, including kinetic energy (the energy of motion), potential energy (stored energy), thermal energy (the energy of heat), electrical energy (the energy of charged particles), electromagnetic energy (the energy of electromagnetic waves), and nuclear energy (the energy stored in the nuclei of atoms). Energy is essential for all physical processes and is conserved, meaning it can be neither created nor destroyed, only converted from one form to another.

Energy can be converted from one form to another. For example, in a hydropower dam, the energy is in the form of kinetic energy of the moving water, which is converted into electrical energy by turbines that spin generators.

Learn more about energy here https://brainly.com/question/2003548

#SPJ1

A research team has genetically engineered a strain of fruit flies to eliminate errors during DNA replication. The team claims that this will eliminate genetic variation in the engineered flies. A second research team claims that eliminating errors during DNA replication will not entirely eliminate genetic variation in the engineered flies
(a)Provide ONE piece of evidence that would indicate new genetic variation has occurred in the engineered flies.

Answers

New phenotypes provides a piece of evidence that new genetic variation occurs in engineered fruit flies.

In genetics, a phenotype is a set of observable features or characteristics of an organism. The term covers an organism's morphology (physical form and structure), developmental processes, biochemical and physiological characteristics, behavior and products of behavior. The phenotype of an organism is produced by two fundamental factors: the expression of the organism's genetic code (its genotype) and the influence of environmental factors. These two factors may interact to further influence the phenotype. When two or more distinct phenotypes exist within the same population of a species, the species is said to be polymorphic.

A well-documented example of polymorphism is the color of the Labrador Retriever; while coat color depends on many genes, yellow, black, and brown can be clearly seen in the environment. In 1978 and again in his 1982 book The Extended Phenotype, Richard Dawkins proposed that bird's nests and other architectural structures such as stone silkworm larvae and beaver ponds) are considered as "extended phenotypes".

Learn more about Phenotype:

https://brainly.com/question/20730322

#SPJ4

For a population containing 90females and 10 males, what is the effective population size, ne ?.

Answers

This is equal to multiplying the total number of males by the total number of girls by four. Let's proceed, Kuwait's effective population size will be divided by 10 yesterday night by four times ten times ninety. This equals three, one, and the result will be merely six in the end.

What is meant by population size?The size of a population refers to the total number of members. The average person count per unit of area or volume is referred to as population density. The qualities of a species or its environment may have an impact on how individuals are spaced out in a population. The most accurate technique to gauge a population's size is to conduct a full count of its members. This method can be used to estimate the population sizes of trees or other comparably stationary species. Yet, counting every member of the organism would be challenging if it were mobile, like a fish.The density of people within a population's various size classes is referred to as population size-structure.

To learn more about population size, refer to:

https://brainly.com/question/1502078

If a student were to use the Lugol test on distilled water, would there be a positive result? Explain

Answers

No, a positive result would not be expected when performing Lugol test on distilled water.

What is Lugol test?

Lugol test is a chemical test used to detect the presence of starch in a solution. It involves adding few drops of Lugol's iodine solution (potassium iodide and iodine in water) to sample and observing any color change. In the presence of starch, iodine in Lugol's solution reacts with the glucose units in the starch, forming blue-black color complex.

Distilled water, on the other hand, is free of dissolved solids and does not contain any starch molecules. Therefore, there should not be any starch present in distilled water that can react with Lugol's solution, resulting in negative test result.

To know more about Lugol test, refer

https://brainly.com/question/29539893

#SPJ1

ANSWERRRRRR PLSSSS ASAPP

Answers

Answer:

1) whole wheat

2) yeast

3) so the bread can rise

4) it makes it rise and expand by the particles vibrating (dont know if this is right)

5) nutrients

whole wheat, yeast, rising, expands, and nutrients

What is photosynthesis?

Answers

Answer:

Photosynthesis is a process used by plants, algae, and some bacteria to convert sunlight into chemical energy. This energy is stored in the form of sugars, which can then be used by the organism for growth and development. During photosynthesis, light energy is absorbed by chlorophyll molecules and converted into chemical energy, which is then used to produce sugars from carbon dioxide and water. Oxygen is also produced as a by-product of the reaction.

Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar

which of the following organisms has a respiratory system that does not require assistance from a circulatory system for gas exchange?

Answers

the answer is : grasshopper

FILL IN THE BLANK.During hemorrhaging, the drop in capillary hydrostatic pressure will ________ NFP, thus ________ reabsorption.

Answers

During hemorrhaging, the drop in capillary hydrostatic pressure will Decrease, thus Increasing reabsorption.

As hydrostatic pressures drop, fluid from the interstitium returns to the capillary, driven by the oncotic pressure gradient, and edema is thought to be the outward filtration predominating the artery end of the capillary.

The fluid moves out of the capillaries when the interstitial fluid hydrostatic pressure decreases, leading to an increase in filtration rather than fluid reabsorption by the capillaries.

Learn more about hydrostatic

https://brainly.com/question/28206120

#SPJ4

General Biology Laboratory Exercise
8. Plasmolysis of Plant Cells. Make a new Elodea wet mount (keep the previous Elodea
wet mount for comparison). Focus your slide at low power, gradually magnifying to
100x.
a. Along the edge of the coverslip, add a couple of drops of 5% NaCl while still
observing the slide. Watch as the cells change and compare to figures of plasmolysis
presented in class.
b. What process is causing this change?
i. Describe what is happening to the water molecules and plasma membrane
during this process.

Answers

The Plasmolysis of Plant Cells experiment, when a couple of drops of 5% NaCl solution are added to an Elodea wet mount, the cells will undergo plasmolysis.

What are Cells ?

It is the smallest unit of life that can carry out all the functions of living things, such as metabolism, reproduction, and response to the environment.

The cell is made up of several structures, including the plasma membrane, cytoplasm, and genetic material. The plasma membrane is a lipid bilayer that encloses the cell and regulates the movement of molecules in and out of the cell. . The genetic material can be found in the form of DNA, which contains the genetic information needed for the cell to function and reproduce.

To know more about cells visit :

https://brainly.com/question/19853211

#SPJ1

Microsporidia have been tentatively moved from the protists to the fungi based on which of the following?
Presence of chitin in cell walls
Absence of chloroplasts
Analysis of DNA sequence data
Absence of centrioles

Answers

Microsporidia have been tentatively moved from the protists to the fungi based on the presence of chitin in their cell walls.

What is chitin?

Chitin is a tough, protective polysaccharide that is found in the cell walls of fungi but not in protists. While the absence of chloroplasts and centrioles can also be used to distinguish fungi from protists, the presence of chitin in the cell walls is a more reliable and definitive characteristic for assigning organisms to the fungal kingdom. In addition to chitin, other features such as analysis of DNA sequence data and other biochemical markers have also supported the reclassification of Microsporidia as fungi.

What is protists?

Protists are a diverse group of eukaryotic organisms that are not plants, animals, or fungi. They are unicellular or multicellular, and can be found in a variety of habitats such as fresh water, marine environments, soil, and even inside other organisms as parasites. Protists include organisms such as algae, amoebas, ciliates, and slime molds.

Protists are characterized by their eukaryotic cell structure, which includes a nucleus and other membrane-bound organelles. They may have cell walls or lack them, and can reproduce sexually or asexually. Some protists are capable of photosynthesis, while others are heterotrophic and obtain nutrients by consuming other organisms or organic matter.

To know more about protists, visit:

https://brainly.com/question/1626285

#SPJ1

Drag and drop the labels to describe the dose-response curve.

Answers

On the x-axis Dose, and y-axis consists of percent of population killed by a given dose.

What is a dose response curve?

A dose-response curve is a graphical representation of the relationship between the dose (amount) of a substance administered or received and the magnitude of the response (effect) produced. This curve is commonly used in toxicology and pharmacology to determine the effects of a drug or chemical or biological systems.

In a dose-response curve, the x-axis represents the dose of the substance, while the y-axis represents the response. The curve typically shows a gradual increase in response as the dose increases, reaching a maximum effect or plateau at higher doses. The shape of the curve can vary depending on the type of substance being tested and the biological system being studied.

The dose-response curve can be used to determine the potency of a substance, which is the amount of the substance required to produce a particular response. It can also be used to determine the efficacy of a substance, which is the ability of the substance to produce a response at any dose.

To know more about toxicology, visit:

https://brainly.com/question/19667127

#SPJ1

A list of some of the blood vessels of the systemic circuit is provided. Arrange them in order from highest to lowest blood pressure.
Highest blood pressure
.....
Lowest

Answers

The order from highest to lowest blood pressure is: Aorta, Arterioles, Capillaries, Venules, Veins.

The systemic circuit is a circuit in the circulatory system that consists of the heart and all body organs except the lungs. It carries oxygen and nutrient-rich blood to the body's organs and tissues, and carbon dioxide and other waste products away from them.

The circulatory system is made up of three main components: the heart, blood vessels, and blood. The heart pumps blood throughout the body via a network of arteries, veins, and capillaries.

The reason for this order depends on the blood pressure in the systemic circuit is related to the size, structure, and function of the different types of blood vessels. Therefore the correct order from highest to lowest blood pressure is: Aorta, Arterioles, Capillaries, Venules, Veins.

For such more question on blood pressure:

https://brainly.com/question/14661197

#SPJ11

Anthropometric measurements does NOT include: Select one:
a. waist circumference
b. blood pressure
c. skinfold measures
d. capillary fragility

Answers

Anthropometric assessments are unable to detect protein and micronutrient shortages, modest changes in nutritional status, or small variations in the body fat-to-lean mass ratios.

What is meant by anthropometric measurements?Height, weight, head circumference, body mass index (BMI), waist, hip, and limb circumferences to measure adiposity, and skinfold thickness make up the basic components of anthropometry. The term "anthropometry" describes the measuring of a human being. An early physical anthropological technique, it has been applied in identification, the study of human physical variation, paleoanthropology, and other attempts to tie physical characteristics to racial and psychological features. Measurement of the human body is the subject of anthropometry. It is frequently used to assess a person's or population's nutritional status.Weight, height, the MUAC, the size of the head, and the skinfold are typical anthropometric measurements.

To learn more about Anthropometric measurements, refer to:

https://brainly.com/question/28425092

how do the nervous system and endocrine work together

Answers

Along with the nervous system, the endocrine system coordinates the body's functions to maintain homeostasis during rest and exercise. The nervous and endocrine systems also work together to initiate and control movement, and all the physiological processes movement involves.
Answer:

The nervous system works by transmitting electrical signals (nerve impulses) through neurons to control and coordinate the body's responses to different stimuli. The endocrine system, on the other hand, uses hormones to regulate various physiological processes, such as growth and development, metabolism, and reproductive functions.

The hypothalamus and pituitary gland are two important structures in the brain that connect the nervous system and endocrine system. The hypothalamus produces hormones that regulate the secretion of hormones by the pituitary gland. The pituitary gland, in turn, secretes various hormones that regulate other endocrine glands in the body, such as the thyroid gland, adrenal gland, and gonads.

Complete this flowchart to show how different alleles can result in different characteristics.
In the DNA, different alleles of a gene have a different sequence of ______________________ different sequence of _______________________ in ______________
transcription
different sequence of ___________________________ in a protein translation
different structure and function of the protein (e.g. normal enzyme vs. defective enzyme)
different characteristics
(e.g. normal ______________________ color vs. albino)

Answers

In the DNA, different alleles of a gene have a different sequence of nucleotides different sequence of RNA nucleotides in transcriptiondifferent sequence of amino acids in a protein translationdifferent structure and function of the protein (e.g. normal enzyme vs. defective enzyme)different characteristics (e.g. normal fur color vs. albino)


The DNA contains different alleles of a gene that have a distinct sequence of nucleotides in transcription, leading to different protein sequence in protein translation, and finally, resulting in different protein structure and function.

For instance, normal brown coat color and albino coat color are two different characteristics that are resulted from different protein structure and function.
For such more question on transcription:

https://brainly.com/question/30765476

#SPJ11

using mendel's two-trait cross as an example, trace his reasoning to arrive at the law of independent assortment.

Answers

Taking the example of Mendel's double-character hybridization, going back to his reasoning, he obtains the law of independent combination. The 9:3:3:1 ratio allowed Mendel to deduce that gamete factors separate independently from other factors.

According to the law of independence, the factors of size and color will be separated independently. As shown by the double cross method, when a homozygous dominant large green plant is crossed with a homozygous recessive small yellow plant, there are 4 different results - large green plant, large yellow plant, small green plant, while plants dwarfs are yellow. This means that all factors are independent of each other. Generation P plants differ in two ways: stem length and pod color. The F1 generation shows only the dominant trait, but all possible phenotypes are present under the F2 generation.

The 9:3:3:1 ratio allowed Mendel to deduce that gamete factors separate independently from other factors. A dihybrid cross is a selection experiment between two organisms that are the same hybrid with two traits. In other words, a dihybrid cross is a cross between two organisms, both of which are heterozygous for two different traits.

Learn more about Mendel:

https://brainly.com/question/3380882

#SPJ4

What is the answer to this question?

Answers

Prokaryotes are metabolically diverse organisms. Prokaryotes live in all environments, no matter how extreme they may be.

the initial exposure to an allergen usually does not produce any symptoms. The symptoms usually appear in the second exposure. What events are occurring during this second exposure? In your description include the role of IgE, basophils, mast cells, and the allergen.

Answers

An allergic reaction develops after the second exposure to an allergen as a result of a chain of events.

What is the name of the initial allergy exposure?

Although the first exposure does not result in symptoms, it may render people susceptible to the allergen (a process known as sensitization).

What occurs if a person is exposed to the same allergen twice?

More severe responses could result from repeated exposures. After someone has been exposed to an allergen or experienced an allergic reaction (becomes sensitised), even a very brief exposure to an allergen might result in a severe reaction.

To know more about allergen visit:-

https://brainly.com/question/29388163

#SPJ1

Explain Wald's Visual Cycle.​

Answers

The visual cycle is a process in the retina that replenishes the molecule retinal for its use in vision.
Answer:

By definition:

Wald's visual cycle, also known as the retinoid cycle, is a biochemical process that occurs in the retina of the eye and is crucial for the maintenance of vision. The visual cycle is responsible for the regeneration of visual pigments, which are proteins that are sensitive to light and play a key role in detecting visual stimuli.

Explanation:

The process begins with the absorption of light by the visual pigment, which causes a chemical reaction that converts the pigment into an activated form. The activated pigment then stimulates a cascade of biochemical reactions that result in the generation of an electrical signal, which is transmitted to the brain via the optic nerve and interpreted as visual information.

After the visual pigment is activated, it needs to be regenerated to its original state so that it can continue to respond to incoming light. This is where the visual cycle comes in. The cycle involves a series of enzymatic reactions that convert the spent form of the visual pigment, called metarhodopsin II, back into its original form, rhodopsin.

The key molecule involved in the visual cycle is a vitamin A derivative called 11-cis retinal, which is located within the visual pigment. After the visual pigment is activated, the 11-cis retinal is converted into all-trans retinal, which then undergoes a series of enzymatic reactions to eventually form 11-cis retinal again. This regenerated 11-cis retinal can then recombine with the protein component of the visual pigment to form rhodopsin, completing the cycle.

Wald's visual cycle is a critical process for maintaining visual sensitivity in low light conditions and ensuring that the visual pigments can continue to respond to incoming light. Dysfunction in the visual cycle can lead to a number of visual disorders, including night blindness and retinitis pigmentosa.
Other Questions
determine the maximum transverse shear stress in psi of a 1/4-8 lead screw with a shear force of 10 lbs What is the volume of the prism below? Assume a hypothetical economy that is open to capital inflows and outflows, so that net capital inflow equals imports (IM) minus exports (X). a. The economy has the following properties: X = $125 millionIM = $80 million Budget balance = -$200 million l = $350 million Calculate private savings in millions of dollars. Private savings = $ _______ million A movie theater is attracting customers with searchlights. One circular searchlight has aradius of 2 feet. What is the searchlight's circumference?Use 3.14 for . If necessary, round your answer to the nearest hundredth. Use the product of powers property to simplify the numeric expression. 2^2/5/2^1/10 The table shows information about two waves. Based on the given information, which conclusion can be made?(1 point)Wave X has a faster speed.Wave W has a greater amplitude.Wave X has a greater amplitude.Wave W has a faster speed. determine if the transformation is one to one and/or onto. justify your answers. give an explanation for each of these properties. in a sumifs formula, what is the maximum number of criteria_rangen arguments? which type of atomic orbital can be described as having 2 lobes of electron density separated by a nodal plane? Please help me please please helpQUESTION FOR PERSONAL REFLECTION 1.Which among the personal vocation are you inclined to? 2.What is/are the sign/s you have to consider such vocation? PLEASE HELP!Given integer variables seedVal and sidesVal, output two random dice rolls. The die is numbered from 1 to sidesVal. End each output with a newline.Ex: If sidesVal is 6, then one possible output is:15 how would I code this in c++? the initial responsibility of the first responding officer after they determine that a crime was committed is to crij Question 12 (2 points)Among the seniors at a small high school of 150 total students, 80 take Math, 41take Spanish, and 54 take Physics. 10 seniors take Math and Spanish. 19 take Mathand Physics. 12 take Physics and Spanish. 7 take all three.How many seniors were taking none of these courses?Note: Consider making a Venn Diagram to solve this problem.05922 Complete the following commercial plan according to what you learned in the lesson. Then, use this worksheet to create your commercial. Title of Short Story: Through the Tunnel Author of Short Story: Doris Lessing Script What can you say to your audience that will sell them your short story? Sounds What sound effects could be added for interest? Visuals What images could be added for interest? Hook Capture your audiences attention with your words. How can you make the story sound interesting and connect with the audience? Plot Overview Summarize your short story in 3-4 sentences. This can include the exposition, rising action, climax, falling action, and resolution. Theme Share your theme sentence. Why is the lesson learned important? How can a reader connect to this theme? Need Explain the significance of this story. Why does your audience need to read this story? Call to Action What should the audience do as a result of seeing your commercial? How do negative experiences affect childrens development? 1. An argument is a piece of information a function needs to complete its task. List five different forms that the information can take. (an argument can be any one of these types)a. A numberb. __________c. ___________d. ___________e.____________f. _____________2. T or F All functions have exactly one argument ___________3. T or F All functions have more than one argument __________4. T or F Some functions do not require an argument ____________ Gold Leaf Computers sources the components for its laptops from various suppliers on the market. The firm pays $100 for processors. $35 for disk drives. $50 for screens, $10 for memory, and $40 for graphics and wireless internet cards. Gold Leaf has determined that it would cost $200 per unit to produce all of the necessary components in its in-house manufacturing facility. In this scenario, Gold Leaf should Multiple Choice o continue to outsource production o vertically integrate, o exit the laptop industry o diversity its activities xavier is the director of maxwell company, but he is striving to become its managing director. xavier works hard toward that goal, and ultimately receives the promotion. which of his needs is fulfilled according to maslow's hierarchy of needs? companies make investments for various reasons, including: having excess cash or in anticipation of a need for cash at some distant point in the future. to exercise significant influence or control over another company. neither a nor b. both a and b. Svp de laidePour cette exercice 14 merci