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ELEN [110]
3 years ago
15

Explain the structure and function of DNA. What important roles does the phosphate-sugar backbone, nitrogen bases, complementary

strands, and hydrogen bonds play in the structure of DNA?
Chemistry
1 answer:
Lina20 [59]3 years ago
4 0
DNA structure is a helix . DNA function is to form the hereditary code of a living organism. This involves physical and acquired traits ( eyes, hair, skin, tendencies). The roles you listed above all are part of the biological chemistry involved in the DNA process.
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vichka [17]

Answer:

The answer is D.

Explanation:

<h2><u><em>PLEASE MARK AS BRAINLIEST!!!!!</em></u></h2>
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3 years ago
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A gas mixture contains oxygen, nitrogen, and carbon dioxide. It has a pressure of 250 mmHg. If the pressure of oxygen is 50 mmHg
kondor19780726 [428]

Answer:

P_{CO_2}=25mmHg

Explanation:

Hello there!

In this case, according to the Dalton's law, which explains that the total pressure of a gaseous system equals the sum of the partial pressures of the gases composing, for the gaseous mixture composed by oxygen, nitrogen and carbon dioxide it would be possible to write:

P_{tot}=P_{N_2}+P_{O_2}+P_{CO_2}

Now, given the pressure of the system and those of oxygen and nitrogen, we calculate that of carbon dioxide as shown below:

P_{CO_2}=P_{tot}-P_{N_2}-P_{O_2}\\\\P_{CO_2}=250mmHg-50mmHg-175mmHg\\\\P_{CO_2}=25mmHg

Best regards!

4 0
3 years ago
An alpha particle is equivalent to the nucleus of an atom of which element?(1 point)
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