please answer fast
difference between fish and frog on the habitat and structure of heart
Answers
Answer:
the answer is this
Explanation:
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Related Questions
Indicate which of the following statements is TRUE. Group of answer choices Covalent bonds connect nucleotides in a strand; noncovalent interactions hold strands into a double-stranded structure. Uracil is similar to thymine except that uracil lacks a methyl group on the carbon at position 5 on the carbon-nitrogen ring. Frederick Griffith demonstrated that a transforming chemical from dead bacteria could change the genetic information of living bacteria. The pyrimidine bases in nucleic acids are cytosine, thymine, and uracil. All of the above statements are true.
Answers
Answer:
The answer is "All of the above statements are true".
Explanation:
In the given-question all choices were true, which can be defined as follows:
The covalent bonds are linked to a range of nucleic acids. Non-covalent encounters involve a dual washed ashore system. The Uracil is just the same as pyrimidines, except that at position 5 throughout the carbohydrate ring it lacks in the methyl group in carbon. Frederick-Griffith proved a possible change throughout the genetic material of bacterial cells with both the morphing chemical from dead bacterial cells. Cytosine, thymine, and uracil are pyrimidine fundamentals in nucleic acids.Which of the following statements is true?
Photosynthesis is a type of homeostasis.
Unicellular organisms have differentiated cells.
Respiration is a type of metabolism.
Multicellular organisms are made of only one cell.
Answers
Answer:
Respiration is a type of metabolism.
Answer:
C. Respiration is a type of metabolism
Explanation:
Both B and D are incorrect because:
Multicelluar organisms have more than one cell; while singlecelled organisims only have one cell.
Also, homeostasis is a natural way an organisms body reacts to different situations, like when you sweat, your body is realising a way to lower the heat in your body. Therfore, A. is also incorrect.
Hope this helped!
what are top consumer
Answers
Answer:
it is a food chain.
I can't write more it's not allowed
Eye color is an example of 1. Transcriptional control 2. gene expression 3. translational control 4. gene regulation
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Eye color is an example of Gene expression
Analogies are often used to help make concepts easier to understand. Trisha wants to write an analogy to help her remember the difference between the axial skeleton and the appendicular skeleton. Which is the best analogy? ~The axial skeleton is like the skin of an apple; the appendicular skeleton is like the core of an apple. ~The axial skeleton is like the core of an apple; the appendicular skeleton is like the skin of an apple. ~The axial skeleton is like the frame of a swing set; the appendicular skeleton is like the swings. ~The axial skeleton is like the swings on a swing set; the appendicular skeleton is like the frame of a swing set.
Answers
Answer:
The correct answer is - The axial skeleton is like the frame of a swing set; the appendicular skeleton is like the swings.
Explanation:
The axial skeleton is the part of the human skeleton system that supports and protects vital organs of the body and makes a frame for the body structure that include bones of skull, trunk rib cage and ribs. The axial skeleton system is like a frame of a swing set that holds the swings and provide support to the swings.
On the other hand, The appendicular skeleton is like the swings of the of the swing set that can move and provide motion to the body, upper body limb, shoulder girdle and lower limb and pelvic girdle are the bones of appendicular skeleton.
Thus, the correct answer is - The axial skeleton is like the frame of a swing set; the appendicular skeleton is like the swings.
Answer:
C - Axial skeleton is like the frame of a swing set
Explanation:
Which of the traits below are completely influenced by the expression of genes? (Choose all that apply)
weight
attached or unattached earlobes
hair texture
eye color
Answers
Answer:
attached or unattached ear lobes
Abnormal vascular regulation by endothelial cells in small vessels of the heart contributes to:___________. a. Hypertension b. Dysrhythmias c. Truncus arteriosus d. Ischemic heart disease
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Answer: The correct answer to the question is option D
ISCHEMIC HEART DISEASE.
Explanation: To answer the question effectively, let us look at the options given,what they are and how they affect the heart.
Endothelial cells play a crucial role in the regulating vascular tone,They do so by secreting variable amounts of constricting and relaxing factors inorder to control tissue perfusion.
Hypertension on the other hand occurs as a result of factors that varies distinctively and not all related to vascular tone.
Dysrhythmias on it's own will affect the function and conduction of heart chambers but not necessarily vascular tones.
Truncus arteriosus results in only in one large artery exiting/leaving the heart.
If capeland switches from producing 0 watermelons to producing 18 million tons of watermelons, what does it give up?
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Answer:
Attached to this solution is an image of the complete question and data.
The correct answer is:
6 million pairs of shoes
Explanation:
From the diagram attached to this answer, the following data can be gotten:
Watermelons shoes
(Millions of tonnes) (Millions of pairs)
0 15
8 14
14 12
18 9
20 5
21 0
From the pattern of the data shown above, we notice that as the production of one commodity increases, the other is given up (decreases)
Therefore, to find how much shoes are given up if Capeland switches from 0 watermelons to 18 million tons of watermelon, we will find the difference between the number of shoes produced at 0 and at 18 million tons of watermelon
at 0 watermelon; shoes = 15 million pairs
at 18 million tons of watermelon; shoes = 9 million pairs
Therefore, number of shoes given up = 15 - 9 = 6 million pairs
Hence, 6 million pairs of shoes are given up tp increase production of watermelon from 0 to 18 million tons
Based on fossilized evidence, there are scientific claims made about the evolution of certain species. If a scientist studying the fossils of a specific species had a hypothesis other than what was currently accepted, what steps should be taken to have the alternative hypothesis considered
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Answer: For the scientist to have alternative hypothesis considered, it is imperative he takes certain steps, this steps will ascertain the scientific claims already made about the evolution of species.
Therefore,the scientist will simply test the alternative hypotheses inorder to know that they are incorrect.
This testing of hypotheses to ascertain their incorrectness is very useful in the study of fossils.
briefly outline how cell theory has developed over the past 400 years
Answers
Explanation:
The cell theory, or cell doctrine, states that all organisms are composed of similar units of organization, called cells. The concept was formally articulated in 1839 by Schleiden & Schwann and has remained as the foundation of modern biology. The idea predates other great paradigms of biology including Darwin’s theory of evolution (1859), Mendel’s laws of inheritance (1865), and the establishment of comparative biochemistry (1940).
First Cells Seen in Cork
While the invention of the telescope made the Cosmos accessible to human observation, the microsope opened up smaller worlds, showing what living forms were composed of. The cell was first discovered and named by Robert Hooke in 1665. He remarked that it looked strangely similar to cellula or small rooms which monks inhabited, thus deriving the name. However what Hooke actually saw was the dead cell walls of plant cells (cork) as it appeared under the microscope. Hooke’s description of these cells was published in Micrographia. The cell walls observed by Hooke gave no indication of the nucleus and other organelles found in most living cells. The first man to witness a live cell under a microscope was Anton van Leeuwenhoek, who in 1674 described the algae Spirogyra. Van Leeuwenhoek probably also saw bacteria
The cell theory, states that all organisms are composed of similar units of organization, called cells.
What is cell theory?The concept of cell theory was in 1839 by Schleiden & Schwann which leads the foundation of modern biology. Cell theory states that every cell is generated from another preexisting cell.
This idea makes the great revolution in biology including Darwin’s theory of evolution (1859), Mendel’s laws of inheritance (1865), and the establishment of comparative biochemistry (1940).
Schleiden & Schwann propose every organism is composed of the cell, which is the basic unit of life and each cell comes from the preexisting cell, and each cell produces a progeny which is similar to its parent cell.
Therefore, cell theory states the existence of the cell in the organism.
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Consider the following chromosomes and if they are affected by hemophilia.
X = unaffected X chromosome, x = X chromosome affected by hemophilia, and Y = Y chromosome.
If an Xx female and XY male have children, what fraction of their offspring will have an affected chromosome, and what fraction is likely to be affected by hemophilia?
(1 point)
A. 1/4 and 1/2
B. 1/2 and 1/4
C. 1/2 and 1/3
D. 1/4 and 1/4
I've been stuck on this question for a while, may someone please assist?
Answers
Answer:
B. 1/2 and 1/4
Explanation:
Hemophilia is a rare disease that has to do with the inability for blood to clot. It is inherited on the X chromosome, hence, it is said to be X-linked. It is usually passed from mother to son. According to this question;
X - unaffected X chromosome
x = X chromosome affected by hemophilia
Y = Y chromosome
Therefore, in a cross between a Xx female (carrier) and a XY male (unaffected), the following chromosomes will be present in the gametes produced by each parent:
Xx- X and x gametes
XY- X and Y gametes
Using these gametes in a punnet square (see attached image), offsprings with genotypes: XX, Xx, XY and xY will be possibly produced.
XX (1) - unaffected female
Xx (1) - unaffected but carrier female
XY (1) - unaffected male
xY (1) - affected male (have hemophilia)
Based on the questions;
- 2 out of the possible 4 children will have the affected chromosomes i.e. both xY son and Xx daughter have the affected (x) chromosome. Hence, the fraction is 1/2
- 1 out of the 4 possible children is affected by hemophilia, which is the xY son. Hence, the fraction is 1/4.
is blood a collodial type
Answers
Answer:
yes
Explanation:
The cells in blood are far larger than 500nm (Red blood cells: 6000-8000nm, white blood cells: 7000-21000nm, platelets: 2000-3000nm) and so they sit in the plasma as a suspension. The plasma also contains blood plasma proteins which are between 2-500nm and so they form a colloid in the water.
Answer:
The cells in blood are far larger than 500nm (Red blood cells: 6000-8000nm, white blood cells: 7000-21000nm, platelets: 2000-3000nm) and so they sit in the plasma as a suspension. The plasma also contains blood plasma proteins which are between 2-500nm and so they form a colloid in the water.
Hope this helps!!
Explanation:
The digestive and excretory systems
Answers
THE EXCRETORY SYSTEM
Answer: The attachment shows the nephron which is the functional unit of the kidney.
It does the work of urine formation through 3 distinct processes.
-Ultra filtration( Small molecules are forced out of the selectively permeable membrane of the glomerulus into the Bowman's capsule under regulated pressure.these molecules are from the blood in the glomerulus brought in by the afferent arteriole.
- Selective reabsorption ( Useful molecule and iron such as glucose and sodium are reabsorbed back into the blood as the filtrate flows through the tubule(nephron)
-Tubular Secretion. ( Movement of molecules not filtered by the glomerulus during the initial stage of filtration back into the filtrate through the renal capillaries.
Stella's urine sample shows the presence of large protein (ULTRAFILTRATION)
John's blood test report indicates a high toxin level ( ULTRAFILTRATION AND TUBULAR SECRETION)
Miguel's blood test shows an increase in metabolic waste( ULTRAFILTRATION AND TUBULAR SECRETION)
Janice's urine report shows the presence of vital materials ( SELECTIVE REABSORPTION).
why is it necessary yo separate oxgynated and deoxgynated blood in livng oranisum
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Explanation:
it is necessary in mammals and birds to separate oxygenated and deoxygenated blood because this makes their circulatory system more efficient and helps in maintaining a constant body temperature
Classify the events according to the gas they primarily contribute to the atmosphere.
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#1 goes to methane, #2 goes to oxygen,#3 goes to carbon dioxide,#4 goes to carbon dioxide. make sure you double check.
Explanation:
A plant can produce oxygen sufficient for the consumption of four people whereas carbon dioxide absorbed by the plant is more than forty-eight pounds. The total release of carbon dioxide by livestock is 15 % of the greenhouse gas production whereas methane production is 155-264 pounds. When a forest fire happens it releases a massive amount of carbon dioxide which is around 1.8 million tons.
What are greenhouse gases?Greenhouse gases are gases such as methane, carbon dioxide, CFCs, and HFCs. They have impacted the atmosphere negatively. The concentration of these gases is highly rising in the atmosphere at an alarming rate. These gases trap the heat of the sun and do not leak out.
Therefore, the emission of greenhouse gases should be monitored.
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what has a greater influence on protien levels
Answers
Question is incomplete, The complete question is as follows:
What has a greater influence on protein levels?
A. Protein degradation has a greater influence because they are denatured faster than the cell can produce them
B. mRNA destroyer concentration has a greater influence because it is destroying mRNA before proteins can even be produced
C. mRNA destroyer concentration has a greater influence because mRNA is destroyed right after the proteins are produced
D. Protein degradation has a greater influence because outside factors like antibiotics can cause it, and it is difficult to recover from
Answer:
B. mRNA destroyer concentration has a greater influence because it is destroying mRNA before proteins can even be produced
Explanation:
mRNA destroyer concentration has a greater influence on protein levels because mRNA destroyers abort the mRNA as soon as the enough mRNA are produced before formation of proteins.
mRNA destroyer follow the mRNA around itself and dragged it once mRNA is picked for protein synthesis.
Hence, the correct answer is "B".
You experimentally apply a toxin to a muscle and find that it does not contract when you electrically stimulate the motor neuron leading to it. You know that this toxin blocks acetylcholine receptors. Therefore, you suspect that the stimulation of contraction is failing because: Group of answer choices
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The question provided is not complete as it lacks the group of choices, however the group of choices are given as follows:
A. A contraction fails to occur because an action potential is not generated in the muscle cell.
B. A contraction fails to occur because this toxin directly prevents ion release from intracellular stores.
C. A contraction fails to occur because neurotransmitter release by the motor neuron is blocked at the neuromuscular junction.
D. A contraction fails to occur because this toxin prevents cross bridge formation and thereby directly prevents contraction.
E. C and D are both true
Answer:
The correct answer is option A : A contraction fails to occur because an action potential is not generated in the muscle cell.
Explanation:
A muscle contraction takes place when action potential bring to muscles by nerves, which is traveled with the help of motor neuron and imitated the muscle contraction.
Acetylcholine or Ach is a chemical messenger to bring the nerve impulses between a nerve and a muscle. If the receptor is block with applying toxin muscle will not contract as ACh will not be able to propagate the nerve impulse to the muscle so there will be no action potential.
The correct answer is option A : A contraction fails to occur because an action potential is not generated in the muscle cell.
Significant amounts of phosphorus are found in all locations on Earth except the..
Answers
Answer:
Atmosphere
Explanation:
Phosphorus cycle in nature is a unique cycle compared to the other natural biological and chemical cycles such as the carbon, nitrogen, sulfur and water cycles, as there is no gaseous phase in the phosphorous cycle. Due to the prevailing atmospheric temperature and pressure which are not appropriate for the formation of gases associated with phosphorus, the compounds in nature where phosphorus can be found are not gases. Phosphorus can therefore be found majorly in sedimentary rocks.
The atmospheric temperature and pressure are incapable of forming phosphorus compounds, Phosphorus has not been found in the atmosphere.
Phosphorus has been the recycled in the atmosphere within the biosphere, lithosphere, and hydrosphere. In the nature, the phosphorus has been present in the sedimentary rocks, with the absorption by plants and animals.
The phosphorus cycle has been consisted of the weathering, absorption by plants and animals and return to the lithosphere with the decomposition. Since the atmospheric temperature and pressure are incapable of forming phosphorus compounds, Phosphorus has not been found in the atmosphere.
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Which describes a grizzly bear’s habitat? all the biotic factors in the ecosystem all the abiotic factors in the ecosystem the role of the bear in the ecosystem the physical area where the bear lives
Answers
Answer:
it is D
Explanation:
A grizzly bear’s habitat comprises of the physical area where the bear lives
What is a habitat?A habitat is defined as the dwelling home of living organisms.
There are three major types of habitat; namely:
Terrestrial habitatAquatic habitatArboreal habitatTerrestrial habitat is the land habitatAquatic habitat is the water habitatArboreal habitat is the tree habitatLearn more about habitat:
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What is the definition of salinity ?
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Answer:
Salinity pertains to the degree of saltiness or the relative proportion of salt in a solution. ... By definition, salinity in relation to limnology refers to the total amount of dissolved solids in water in parts per thousand by weight.
Answer:
Salinity is the saltiness or dissolved inorganic salt content of a body of water. Substances that are dissolved in water are usually called solutes.
Explanation:
In human body where is liver located
Answers
Answer:
The liver is located in the upper right-hand portion of the abdominal cavity, beneath the diaphragm, and on top of the stomach, right kidney, and intestines. Shaped like a cone, the liver is a dark reddish-brown organ that weighs about 3 pounds.
Explanation:
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2) Micah and Taylor investigate the effect of tap water and spring water on the growth of plants.
They grew two plants of the same type and size in separate containers. Every three days, they
added the same amount of tap water to one plant and the same amount of spring water to the
other. Describe an action that would best improve the reliability of their results?
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Answer:
To improve the reliability of the results, the nutritional component of each category of water must be tested and recorded.
Second, the experiment should be carried out under greenhouse conditions.
The above actions will afford more control. When an experiment is controlled, it means that except for the dependent variable, all other variables are kept constant by the scientist.
By performing the experiment under greenhouse conditions, the kind of water the plants receive, temperature and other biotic actors are kept within measurable limits thus increasing the reliability of the results.
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One side of your face is identical to the other side. You are _____. radially symmetrical asymmetrical bilaterally symmetrica
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Answer:
For the answer to the question above, asking if One side of your face is identical to the other side. Then you are bilaterally symmetrical.
I hope my answer helped you. Feel free to ask more questions. Have a nice day!
Explanation:
Answer:
Bilaterally symmetrical
Explanation:
From my understanding, radially symmetrical means identical halves around the central axis.
Asymmetrical means not symmetrical at all
Leaving us with Bilaterally symmetrical, which is basically identical parts but as right and left.
That's the best i can explain so there is a diagram to help understand.
The scientist has chosen to study the motion of clouds in the atmosphere during a thunderstorm which type of model is most appropriate for her investigation
Answers
Answer: COMPUTER SIMULATION
Explanation: Computer simulation is a model that helps to scientists to have a clear and better understanding and be able to effectively predict the occurrence of future outcomes of real physical situations.
Computer simulation makes use of mathematical models to effectively analyse and predict future occurrences which helps the world to be better prepared and able to effectively manage physical and real world situations.
When an action potential from a motor neuron arrives at the neuromuscular junction (NMJ), a series of events occurs that leads to muscle contraction. What events will occur last?
Answers
Answer:
conformational change in troponin
Explanation:
The troponin complex plays an essential role in the thin filament regulation of striated muscle contraction.
A country's ecological footprint can be calculated by multiplying its population size by the footprint of each individual. Why are some ecologists concerned about the ecological footprint of a country like India
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Answer:
Ecological footprint estimates the requirements of renewable resources that a population consumes to live a particular lifestyle. Some ecologists are concerned because the result of the ecological footprint shows that the demand of the population is increasing in comparison to the supply of nature.
For example in India, the ecological footprint shows negative impact of population demand over supply of nature.
Antibodies:_______. A. play a large role in cell-mediated immunity. B. are produced by both T and B cells. C. are composed of four light and four heavy polypeptide chains. D. are not specific, but act generally. E. have a variable region that binds to a specific antigenic determinant.
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Answer:
E. have a variable region that binds to a specific antigenic determinant.
Antibodies E. have a variable region that binds to a specific antigenic determinant.
What is the region of the antibody that the antigen binds to?This location of the antibody is known as the Fab (fragment, antigen binding) place. it's far composed of 1 constant and one variable domain from every heavy and light chain of the antibody. The paratope is shaped on the amino terminal cease of the antibody monomer by the variable domains from the heavy and light chains.
What binds to an antigenic determinant?An antigenic determinant is a website online of an antigen molecule that is termed an epitope and interacts with the unique antigen-binding site within the variable vicinity of an antibody molecule called a paratope.
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what is the hypothesis
Answers
Answer:
a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.
Explanation:
Answer:
what you think is gonna happen in an experiment
Explanation:
Natural selection states that complex organisms evolved through random mutations alone. True or False?
Answers
Answer:
False.
Explanation:
This statement is false because organisms don't evolve - populations do. New gene variants (i.e., alleles) are produced by random mutation, and over the course of many generations, natural selection may favor advantageous variants, causing them to become more common in the population. However, because mutation rates are low relative to population growth in most species, mutation alone doesn't have much of an effect on evolution.
What happens when volcanoes release greenhouse gases into the atmosphere?
Answers
Answer:
a. the climate gets warmer...
Explanation:
When volcanoes release greenhouse gases into the atmosphere, global warming is due to the greenhouse effect.
What do you mean by the Greenhouse effect?The Greenhouse effect may be defined as the phenomenon of keeping the earth warm due to the presence of certain gases in the atmosphere.
Greenhouse gases like carbon dioxide, Methane, and Nitrous oxide allow the solar radiations to enter but prevent the escape of heat radiations of longer wavelength.
Due to this, the gradual and continuous increase in the average temperature of the earth's surface occurs, a phenomenon known as global warming.
Therefore, when volcanoes release greenhouse gases into the atmosphere, global warming is due to the greenhouse effect.
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