How long have scientists understood the role of DNA in heredity

Biology

1 answer:

exis [7]2 years ago

6 0

Answer:

The discovery of DNA occurred in 1869 by Swiss-born biochemist Fredrich Miescher, it took more than 80 years for its importance to be fully realized. The experiments reported in Oswald Avery and his colleagues' landmark paper of 1944 provided convincing proof that DNA was the hereditary material.

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In your own words, describe the base-pairing rules in any DNA molecule.

Elenna [48]

The base pairing rules in any DNA molecule are these:

• Adenine always pairs with Thymine(A-T)

• Cytosine always pairs with Guanine (C-G)

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Black coffee has a pH around 5; hand soap has a pH of 10. How many times more acidic is coffee relative

Anon25 [30]

Answer:

$\boxed {\boxed {\sf 10^5 \ or \ 100,000 \ times \ more \ acidic}}$

Explanation:

The pH scale stands for the power or potential of hydrogen. It measures how acidic or basic a solution based on the concentration of hydrogen ions and a scale from 1 to 14.

This scale is unique because it is logarithmic. So, every time the pH changes by 1 on the scale, the actual concentration of the solution increases or decreases by a tenfold.

So, a solution with a pH of 7 is ten times more acidic than a solution with a pH of 8. This can be translated to:

$10^ {difference \ in \ pH}$

The black coffee has a pH of 5 and the hand soap has a pH of 10. We want to find how many times more acidic coffee is, so we subtract 5 from 10 and get 5. The difference in pH is 5.

$10^5=100,000$

Coffee is <u>10⁵ or 100,000 times more acidic than hand soap.</u>

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2 years ago

Energy resources, the ease of attaining them, and the methods in which they are used, directly relate to economic growth of a co

Arisa [49]

Answer: A. Family size

Explanation:

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Ich e6 gcp describes standards that apply to:

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This describes standards that apply to good clinical practice relative to clinical trials involving human subjects or health products used by humans. ICH stands for International Council for Harmonisation of Technical Requirements for Pharmaceuticals for Human Use. ICH brings together regulatory authorities and pharmaceutical industry. E6 was a series of guidelines to ensure good clinical practice (GCP).

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Answer is A!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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Answer:

Explanation:

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