What feature do veins have that arteries do not?

Answers

Answer 1

Answer: valves: veins have valves arteries do not have...
lumen: in arteries it is small while in veins it is large...
walls: in arteries walls are thick ..in veins walls are thin...
blood: veins have deoxygenated blood (except pulmonary vein) .. while arteries have oxygenated blood...(except pulmonary artery)...

Answer 2

Answer: .The most important difference between veins and arteries is that veins carry oxygenated blood while arteries carry oxygenated blood.Veins have valves and have thin walls.

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Which of the following examples best illustrates sensory interaction? A. Julie loves chicken noodle soup, but her cold is making it taste bland. B. Michael was surprised to find that he likes the taste of rare steak. C. Alyssa loves the smell and taste of her mother’s homemade apple pie. D. Eli thought the fish smelled great but tasted awful.
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After a dreary day of rain, the sun peeks through the clouds and a rainbow forms. You notice the rainbow is the shape of a parabola.

Ticks suck blood from a host organism. This is an example of

Answers

Answer:

Parasitism

Explanation:

Parasitism is the association between two organisms in which one organism (parasite) is benefited while the other (host) is harmed. The parasite is a heterotrophic organism that derives its nutrition from the living tissues of the host organism. In the given example, tick suck blood from their host and are exhibiting parasitism.

This is a parasitic relationship.

Muscle tone is ________. A) the feeling of well-being following exercise B) the condition of athletes after intensive training C) the ability of a muscle to efficiently cause skeletal movements D) a state of sustained partial contraction

Answers

Muscle tone is a state of sustained partial contraction (option D).

What is muscle tone?

Muscle tone in physiology is the continuous and passive partial contraction of the muscles, which helps maintain posture.

Muscle tone aids in holding our bodies upright when sitting and standing. These changes in muscletone are what enable us to move.

For example, if someone took the arm and quickly straightened your elbow, the biceps muscle would automatically and quickly respond and contract in response to protect from injury.

Therefore, option D is correct.

Learn more about muscle tone at: brainly.com/question/32267212

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Answer:

D is the correct answer

Artificial selection was used on corn to produce a single strain of corn with increased growth rates and greater resistance to a fungus. Although farmers have continued to select for these traits, the productivity of this strain is no longer increasing. This suggests that:_____________.

Answers

Answer:

The natural variation for these traits has been eliminated

Explanation:

Natural variation occurs when there's a variation in the genetic and epigenetic material of a population (corn), in this case, caused by artificial selection. Since this variation is not happening anymore, this means that the genetic material is not being transmitted any longer and therefore the natural variation has been eliminated.

I hope you find this information useful and interetsing! Good luck!

What inhibits RNA polymerase II?

Answers

Explanation:

RNA polymerase II is inhibited by certain drugs and toxins. One well-known inhibitor of RNA polymerase II is a toxin called α-amanitin, which is found in some species of poisonous mushrooms, such as the death cap mushroom (Amanita phalloides).

α-Amanitin functions by binding to RNA polymerase II and preventing it from transcribing messenger RNA (mRNA). This inhibition of mRNA synthesis disrupts the process of protein production in eukaryotic cells, which can ultimately lead to cell death and various toxic effects in the affected organism.

It's important to note that inhibition of RNA polymerase II is highly toxic and can be fatal if ingested. Poisoning from mushrooms containing α-amanitin can result in severe liver and kidney damage. If there is a suspicion of mushroom poisoning, immediate medical attention is crucial.

Wood is the primary source of fuel for _____.the wealthy
developing nations
Ohio
North America

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developing nations (:

Why are some of carl linnaeus's classifications of organisms incorrect

Answers

Some of Carl Linnaeus' classifications of organisms were incorrect because he classified them based off of appearances and actions instead of actual relationships. For instance, bats were classified as birds because they flew, and whales were classified as fish because they had fins and swam underwater.The mere fact that some of his classifications were off, however, does not reduce the marked effect that it had on the advancement of scientific thought in the present world. His findings have greatly influenced the modern classification system in many ways.

Explanation:
Carl Linnaeus classified organisms on the basis of physical features. In his time, this was accepted. As time went on, he was stated incorrectly with the aid of new discoveries. However, he did facilitate the scientific community in a different way. He classified organisms with their common ancestors.

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