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
PLEASE HELP!! What are the limitations of sending information using electromagnetic waves?
Answer:
Explanation:
he limitations of sending information using electromagnetic waves is that when the electromagnetic waves move outward in all directions, wave transmitters need to be focused to transmit their signals to a single specified location.
Which of the following is found in the 'rungs' of a DNA strand?
A. Uracil
B. Thymine
C. Deoxy Ribose
D. Phosphate
Answer:
Thymine
Explanation:
Smooth endoplasmic Reticulum has ribosomes attached to its surface. correct and rewrite the following.
Answer:
See below
Explanation:
The correct statements can be two of the following:
1) Rough Endoplasmic reticulum has ribosomes attached to it.
2) Smooth endoplasmic reticulum do not have ribosomes attached to it.
HELPPPP!!!!! Based on the diagram above, which of the following correctly describes the function and components of layer A?
A) movement; villi, blood vessels, lymphatic vessels
B) movement; muscles and connective tissue
C) absorption; villi, blood vessels, lymphatic vessels
D) absorption; muscle and connective tissue
Answer:
The correct answer is option C.
Explanation:
The given diagram is the representation of small intestine which is responsible for the absorption. The mucosa layer is the innermost layer of lumen of the small intestine that consist villi with blood vessels and lymphatic vessels.
The villi are the structure that are responsible for the absorption of food in the intestine by increase the surface are.The blood vessels and lymphatic vessels that are found near them takes the nutrient absorbed to the body.
Thus, the correct answer is option C.
• How the knowledge of classification be applied to assess the characteristics of different organisms when visit to zoo, herbaria or gardens.(Students may do research on internet to answer this question )
plz correct answer
be quick
Answer:
Compare two organism on the physical features and mode of nutrition.
Explanation:
Organisms are classified in groups and sub-groups on the basis of similarities and differences. so in order to compare two organisms, start with the similarities that are present between them. If similarities are more so they belong to the same group or if differences are more than both are placed in different groups. for classification, see the physical appearance of organism, mode of nutrition and habitat etc. If organisms are identical, they belong to the same species, if one or two characters are different so their genus will be same but specie is different. In zoo animals are different from the animals which is present in garden so compare the physical features of zoo and garden animals.
Which amino acid chain will be formed by the condons shown below?
Answer:
D. Gly Lys Cys
Explanation:
Blood pressure is determined by:________. A. estimating the degree of turbulence in a partly closed vessel. B. listening carefully to the pulse. C. measuring the size of the pulse. D. estimating the pressure needed to close off an artery with an external pressure cuff. E. measuring the force of contraction of the left ventricle.
Answer:
D. estimating the pressure needed to close off an artery with an external pressure cuff.
Explanation:
Which of the following describes a positron emission tomography (PET) scanner? 1: A device that uses magnetic fields to produce images of brain structures 2: A device that uses magnetic fields to measure blood flow 3: A device that uses radioactive fluid to determine the active areas of the brain 4: An X-ray device that can create a 3D model of the brain
Answer:
3: A device that uses radioactive fluid to determine the active areas of the brain
Explanation:
A positron emission tomography (PET) scan is an imaging test that helps reveal how your tissues and organs are functioning. A PET scan uses a radioactive drug (tracer) to show this activity. This scan can sometimes detect disease before it shows up on other imaging tests.
Depending on the type of exam, the radiotracer is injected, swallowed or inhaled as a gas. It eventually accumulates in the area of the body under examination. A special camera or imaging device detects radioactive emissions from the radiotracer. The camera or device produces pictures and provides molecular information.
What does "the process of making more of the same producing offspring" called?
Thanks..
what is the difference between your town's minimum temperatures yesterday? In your answer, list one explanation for why temperature changes during the day.
Answer:
Maximum temperature was 40 Celsius at daytime while temperature at night was 31 Celsius.
Explanation:
Yesterday maximum temperature was 40 Celsius at daytime while temperature at night was 31 Celsius because during daytime the intensity of sunlight increases the temperature of the particles present in the atmosphere. So at daytime, temperature increases while at night decrease occurs in the temperature. There is a lot of fluctuation in temperature at daytime due to increasing and lowering the intensity of light.
Answer:
The difference between the high and low temperatures in New York City was 12 degrees. One reason for the temperature difference is Earth’s rotation. Temperatures are generally warmer during the day because that side of the planet is heated by the Sun. At night, that side faces away from the Sun. So, temperatures will be cooler.
Explanation:
In the autumn, many birds will collect seeds and then hide them in various caches throughout their habitat. The birds will guard their caches from other birds, and move the caches if they start to dry out. These caches provide a food source for the birds during the winter. What is an abiotic factor that contributed to the evolution of this set of behaviors? A. being preyed upon by larger birds B. competition with other birds for space C. limited food availability D. cold winter climate
Answer:cold winter climate
Explanation:During winter specially in the eastern and western part of the world....snows bury grounds and food that enables this organisms live....and cold can also affect them
Answer:
Answer: c. limited food availability
Explanation:
Both biotic and abiotic factors are responsible for shaping the evolutionary framework of the population. Resource availability can be one of the important abiotic factor in determining the evolutionary dynamics of the population or species. Limitations in resource can result in increase in competition. According to population exclusion principle when two species compete for the same limiting resource this results in co-evolution of both the species. But the extent of evolution may vary among the species. The one which undergoes more favorable evolution will be stronger competitor and drive more resources and will be fit for survival in adverse limiting conditions.
During the 1950s, a scientist named Lysenko tried to solve the food shortages in the Soviet Union by breeding wheat that could grow in Siberia. He theorized that if individual wheat plants were exposed to cold, they would develop additional cold tolerance and pass it to their offspring. Based on the ideas of artificial and natural selection, do you think this project worked as planned
Answer:
No
Explanation:
Trofim Lysenko was a Biologist in the then Soviet Union, who did not believe in the fundamental laws of science. Selective breeding is the method developed by humans to change certain characteristics of species to desired outcomes. This is based on the fact that living things have inheritable traits encoded in genes that can be passed from one generation to another.
Lysenko did not believe in this fact. He rather believed that when exposed to the right environment, plants and animals soon become adjusted to the exposure and can then develop traits that would be passed on to their offsprings. He applied this theory of his when he exposed wheat plants to cold believing that they would develop tolerance to cold. This failed woefully and resulted in severe starvation that caused the death of millions of people in the Soviet Union.
What is the function of the nucleus? A. Builds proteins B. Stores the cell's glucose C. Stores the cell's DNA D. Produces energy for the cell by respiration
[tex] \large{ \boxed{ \bf{ \pink{Stores \: the \: cell \: DNA(C)}}}}[/tex]
Nucleus is the control centre of the cell and manages all the cellular activities taking place inside the cell. It consists of four parts :-
Nuclear membrane, Nucleoplasm, Chromatin material and Nucleolus.The Chromatin material(Condensed - Chromosome) stores the cell's DNA which is transmitted to next generation.
what happens to the chromosomes if nondisjunction occurs during meiosis one versus meiosis two
Answer:
Nondisjunction is defined as the failure in the separation of homologous chromosomes or sister chromatids during nuclear division.
Nondisjunction occurs in both phases meiosis one (I) and meiosis two (II) during anaphase but both in both phases nondisjunction is different.
In meiosis I, homologous chromosomes fail to separate while in meiosis II, sister chromatids fail to separate.
What happens when the positive transcription factor affinity is slightly lower than the negative transcription factors affinity? A. mRNA is made in large quantities in infrequent batches B. mRNA is made in small quantities in frequent batches. C. mRNA is made in large quantities in frequent batches D. mRNA is made in small quantities in infrequent batches.
Answer:
a
Explanation:
a
Answer: a!!
Explanation: this is correct!
Why do turtles hv paddle like flippers ?
Answer:
The answer is
Explanation:
Turtles have paddle like flippers to push back water while swimming.
Answer:
Turtles hv paddle like flippers so that they can push the water backward, move forward and swim easily
When the ranges of two different species meet, a stable "hybrid zone" occupied by hybrid individuals may form. How is this possible? When the ranges of two different species meet, a stable "hybrid zone" occupied by hybrid individuals may form. How is this possible? Two diverged populations are capable of mating and producing viable and fertile offspring. Hybrid individuals may have reduced fitness and thus be strongly selected against. Hybrid individuals are always allopolyploid and are thus unable to mate with either of the original species. One species has a selective advantage, so as hybridization continues, the other species will go extinct.
Answer:
Two diverged populations are capable of mating and producing viable and fertile offspring.
Explanation:
Although the biological concept of species says that two different species can not mate and produce viable fertile descendants, the hybrid zones are characterized for being an area where two different genetically groups meet and reproduce. These groups might be the same or different species.
This is a frequent phenomenon in nature, and widely common geographically and among taxonomic groups. It is not rear that different sympatric populations, with a short time of divergence and similar reproductive strategies, can hybridize and even generate new populations that get reproductively isolated from their parentals.
When talking about sympatry we refer to two similar species that coincide in part or their whole distribution area.
These new populations are even morphologically different from the parental forms, which allow them to colonize new habitats and niches, promoting diversification.
Hibridation zones are very important to conserve, just because they are points of genetic diversity generation and diversification areas.
When the ranges of two different species meet, a stable "hybrid zone" occupied by hybrid individuals can form. This is possible because hybrid individuals are always allopolyploid and therefore are unable to mate with any of the original species, to understand more we need to know that......
Hybrid animalsHybridization, that is, the process through which different species reproduce, generating an offspring, is not considered a very common phenomenon in nature. This is because, in general, species have a distinct number of chromosomes, the cell structures that contain genes. These differences in the number of chromosomes can make the development of the embryo unfeasible, as the alignment of equivalent chromosomes from the female and the male are necessary for the division of the fertilized cell to occur. When this alignment does not occur, the cell does not reproduce and dies. However, in some cases, even with the lack of chromosome pairs, reproduction between different species is successful, generating the hybrid. However, the birth of the individual does not mean that its survival is guaranteed. Often, the hybrid generated is weaker than its parents and does not survive; in other cases, the hybrid can adapt better to the environment than the species that conceived it.
With this information, we can conclude that hybrid animals are a cross between two different species, but this hybrid can have several complications for its survival.
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Where should keisha place an x
next to a but i dont study algebra sorry
what is the meaning of Alkaline medium in life processes
Answer:
an alkali also can be defined as a base that dissolves in water. a solution of soluble base has a pH greater than 7.0. the adjective alkaline is commonly, an alkalescent less often, used in English as a synonym for basic, especially for bases soluble in water.
which phase of water is the most dense and which is the least dense
Answer:
The ice form of water is most dense, and the vapor form of water is the least dense.
Explanation:
The molecular cohesion in ice is stronger than in liquid or vapor, forcing the molecules of water to remain closely bonded making it dense. The vapor form of water is weaker that liquid and ice since the molecules are nearly free roaming or loosely bonded making it not very dense.
Cheers.
The most dense phase of water is liquid water, and the least dense phase of water is ice.
As water freezes and transitions from a liquid to a solid state, the water molecules arrange themselves in a regular and more structured pattern, forming a crystal lattice.
This arrangement leads to an increase in the space between the water molecules compared to the more closely packed molecules in the liquid phase.
As a result, the density of ice is lower than that of liquid water.
This is due to the hydrogen bonding between water molecules.
When water freezes, the molecules slow down, and the hydrogen bonds stabilize, resulting in the formation of ice crystals with a less dense arrangement.
As the temperature decreases below 4 °C, the density of water decreases due to the expansion that occurs when it freezes into ice.
Thus, the most dense phase of water is liquid water, and the least dense phase of water is ice.
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During which of the following processes is carbon released into the atmosphere as carbon dioxide?
OA. photosynthesis and combustion
respiration and photosynthesis
OC. respiration and combustion
OD. combustion and sedimentation
22 of 30 Answered
Session Timer: 3:55
Answer:
Respiration and Combustion
Explanation:
What type of muscle is specialized for rapid and forceful contraction of short duration ?
Select one
a. Skeletal muscle
b. Smooth muscle
c. Cardiac muscle
who discovered micro organisms
Robert Hooke is the person that discovered Micro organism
Answer:
An English architect, "Robert Hooke" discovered micro organisms in 1665.
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Which latitude lines does photoperiodism have the greatest effect? Why?
Answer: A short-day plant will not flower if light is turned on for a few minutes in the middle of the night and a long-day plant can flower if exposed to more red-light in the middle of the night. Cryptochromes are another type of photoreceptor that is important in photoperiodism. Cryptochromes absorb blue light and UV-A.
Explanation:
Recreate the sequence that occurs in the carbon cycle beginning with carbon dioxide gas.
combustion, atmosphere, soil organic matter, fossil fuel, plant biomass.
The four phases of the carbon cycle, which is vitally important for both plants and animals, are as follows:
What is carbon cycle?A sequence of environmental processes known as the "carbon cycle" involve the absorption of carbon dioxide into living tissue through photosynthesis, its release back into the atmosphere through respiration, the decomposition of extinct creatures, and the burning of fossil fuels.
1. Carbon dioxide, a type of carbon, is released into the atmosphere. Examples include combustion and breathing.
2. Plants use the carbon dioxide in the air, and following photosynthesis, they release oxygen into the atmosphere.
3. Environment-present animals consume plants and transfer carbon up the food chain. They breathe out carbon dioxide into the atmosphere. Animals and plants pass away after a specific amount of time.
4. Unless fossils of plants and animals are developed, which also contain carbon, the body of plants and animals is eaten through decomposition, returning the carbon to the environment in the form of carbon dioxide.
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True or False: Polar molecules do not have a difference in electrical charge.
Answer:
false
Explanation:
nonpolar molecule has no separation of charge, so no positive or negative poles are formed
The nephron of mammals and malpighian tubules of insects are both involved in water and salt balance. They are also similar in that they are both:_______
Glaucoma is a leading cause of blindness. Studies have linked a common form of glaucoma to three genes and more than 20 genetic loci. Which best describes glaucoma? a recessive trait that requires multiple recessive alleles to be expressed a polygenic trait that is influenced by the alleles of several genes a codominant trait that is expressed more often when more dominant alleles are present a dominant trait that depends on the presence of only one of many dominant alleles
Answer:
Question
Glaucoma is a leading cause of blindness. Studies have linked a common form of glaucoma to three genes and more than 20 genetic loci. Which best describes glaucoma?
Answer
(A) - a recessive trait that requires multiple recessive alleles to be expressed
Explanation:
Glaucoma is a polygenic trait influenced by the alleles of several genes.
Polygenic phenotypic traits are those influenced by many genes, which interact to shape the phenotype. Polygenic traits exhibit a bell-shaped distribution in a population (i.e. they have a continuous distribution). Some examples of polygenic traits include, among others, height, body shape, skin color, weight, etc.A polygenic trait that is also affected by environmental factors is known as a multifactorial trait.In conclusion, glaucoma is a polygenic trait that is influenced by the alleles of several genes.
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It can be inferred from the passage that the time required to replenish muscle glycogen following anaerobic glycolysis is determined by which of the following factors? I. Rate of oxidative metabolism II. Quantity of lactic acid in the body fluids III. Percentage of glucose that is returned to the muscles
Answer:
Percentage of glucose that is returned to the muscles.
Explanation:
After intense physical activity, where glycogen reserves are consumed, the muscle acquires its resting and reactivation position, is where the organism that feeds the new reserves for the next physical activity is located.
Foods rich in carbohydrates identified as ATP or glucose in good quantities, but this depends on the amount of intake and the quality of the food, that is how when consuming these sources, the serum glucose values are metabolized, that is, increases glycemia and this promotes the release of insulin that is responsible for generating energy reserves with more complex chemical bonds such as glycogen.
What features do plant cells have in common with animal cells?
Answer:
they both are cells boom
Explanation:
they kinda different do
