Which statement best describes the function of capillaries, arteries, and veins in the circulatory system? A) Capillaries deliver blood to individual cells; arteries bring oxygen-depleted blood back to the heart; veins deliver oxygen-rich blood to the heart.

B) Capillaries deliver oxygen-rich blood to the heart; arteries bring oxygen rich-blood away from the heart; veins deliver blood to individual cells.

C) Capillaries deliver blood to individual cells; veins generally deliver oxygen-depleted blood to the heart; arteries generally bring oxygen-rich blood away from the heart.

D) Capillaries bring oxygen-rich blood away from the heart; arteries deliver blood to individual cells; veins deliver oxygen-rich blood to the heart.

Answers

Answer 1

Answer: the answer is c the capillaries are tiny they branch off of the arterioles and go back to the vienules the arterirs carry blood away from the heart in most cases it is oxygen rich then veins bring blood back to the heart usually oxygen depleted. this is true in most except the pulmonary artery and vien

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Why do scientists accept Darwins theory of evolution instead of Lamarcks theory

Answers

darwin's theory is based on observations and conclusions drawn for them.

it is a causo-mechanical explanation of the origin of the species

What has led to the vast variation seen in flowers?a. Temperature
c. Pollinator attraction
b. Breeding
d. Sexual selection

Answers

I reckon it's pollinator attraction.

Answer:

pollinion atraction

Explanation:

What is the most important reason to continue efforts to preserve coral reefs?

Answers

Because there are some fish that can only survive in Coral reefs :/ And im sure adapting right away to the open ocean is not going to be good. On top of that we destroy a lot of Coral reefs when we have oil spills from huge boats. And preserving our nature is always a good thing because helping coral reefs could mean saving lots of coral and tropical fish and keeping our earth as beautiful as it is:)
hope this is helpful
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In which ways are RNA and DNA different?a. RNA has ribose sugar, DNA has deoxyribose sugar
b. RNA has uracil, DNA has thymine
c. RNA is single-stranded, DNA is a double-helix
d. all of the above

Answers

Answer:

d. all of the above is the correct answer.

Explanation:

These are the main difference between RNA and DNA

Sugar present in RNA is ribose sugar whereas sugar present in DNA is deoxyribose sugar.

Nitrogenous bases present in DNA are adenine, guanine, cytosine, and thymine whereas in the case of RNA nitrogenous bases present are adenine, guanine, cytosine and uracil which is replaced by thymine in DNA.

RNA is single-stranded whereas DNA is a double-helix.

thus the all the above(D) options are correct.

Final answer:

RNA and DNA differ in three major areas: the types of sugars they contain, the bases they use, and their structure. RNA contains ribose sugars and the base uracil, while being single-stranded. In contrast, DNA contains deoxyribose sugars, the base thymine, and has a double helical structure.

Explanation:

RNA and DNA, which can both be found in cells, have several significant differences. To answer your question, the correct choice would be (d) all of the above because:

RNA has ribose sugar, while DNA has deoxyribose sugar. The difference is that the deoxyribose sugar in DNA is missing one oxygen atom compared to the ribose sugar in RNA.
RNA contains the base uracil whereas DNA uses the base thymine. This change makes DNA more stable and less likely to mutate.
Finally, RNA is single-stranded and DNA is a double helix. The double-stranded DNA is more stable resulting in a reduction in damage and loss of genetic information.

Learn more about Difference between RNA and DNA here:

brainly.com/question/32377763

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** the bottom question “Liang is warming..”

Answers

Answer:

they move faster on average

Explanation:

temperature increase means the particles have more kinetic energy so they move faster

Which of the following accurately describes acids and bases in regard to ionization? A. When free hydrogen ions and free hydroxyl ions are removed from solutions of acids and bases, the acidic and basic properties disappear.
B. Weak acids dissociate to a great degree.
C. Weak bases dissociate only to a slight degree to produce free hydrogen ions.
D. When an acid and a base are mixed together in the proper proportions, two hydroxyl ions will unite.

Answers

The correct answer is A. When free hydrogen ions and free hydroxyl ions are removed from solutions of acids and bases, the acidic and basic properties disappear.

The strength of the acid or base depends upon its degree of ionization. Since different acids and different bases dissociate or ionize to different extent in water so their degree of ionization is also different. Strong acids and strong bases ionize in water completely while the weaker acids or bases ionize partially. Ionization of the weak acids in water are in equilibrium. The degree of ionization is the ratio of the number of ionized molecules to the number of molecules which are dissolved in water. In case of acids the ionized molecules are hydrogen ions and in case of bases hydroxyl ions.

The right answer for the question that is being asked and shown above is that: "A. When free hydrogen ions and free hydroxyl ions are removed from solutions of acids and bases, the acidic and basic properties disappear." This accurately describes acids and bases in regard to ionization

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