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andreev551 [17]
3 years ago
9

Which of the following is TRUE about RNA and DNA?

Biology
1 answer:
Brrunno [24]3 years ago
4 0
DNA is something everyone has in them to see
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shepuryov [24]
I believe that the answer is b
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consider other shapes for a cell besides a cube? what cell shape might increase . surface area and decrease the volume explain
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Answer - Well to put it in short terms. 

Cells such as water cells or aquatic microorganisms need and required to have a large surface area increased. Because this helps them stay afloat without spending much amount of energy to float.

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What is biogeography and what does it provide?
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3 0
3 years ago
Compare and contrast the bones of a birds wing and a seals flipper
deff fn [24]
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3 years ago
Wood deposits recovered from an archaeological site contain 36% of the C-14 they originally contained. How long ago did the tree
Veseljchak [2.6K]

Answer: It was obtained 8515 years ago

Explanation:

Expression for rate law for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

k = rate constant

t = age of sample

a = let initial amount of the reactant

a - x = amount left after decay process  

a) to find the rate constant:

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

t_{\frac{1}{2}}=\frac{0.693}{k}

k=\frac{0.693}{5760}=0.00012years^{-1}

b) for completion of 36% of reaction

t=\frac{2.303}{k}\log\frac{100}{36}

t=\frac{2.303}{0.00012}\log\frac{100}{36}

t = 8515 years

The time was 8515 years.

3 0
3 years ago
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