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iogann1982 [59]
2 years ago
7

PLS HELP

Biology
1 answer:
Sav [38]2 years ago
7 0

when changes in a protein appear to accumulate at a constant rate over time is called option (c) i.e, Molecular clock.

<h3>What does molecular clock mean?</h3>

The term "molecular clock" refers to a method that estimates the time in prehistory when two or more life forms diverged by analyzing the mutation rate of biomolecules. Typically, nucleotide sequences for DNA, RNA, or amino acid sequences for proteins serve as the biomolecular data for these calculations.

Hedges, a biology professor at Penn State, claims that the molecular clock counts the mutations that accumulate through time in the gene sequences of various species rather than counting seconds, minutes, and hours.

Mutation and recombination, the two fundamental biological processes that give rise to all heritable variations, are the foundation of molecular clocks. Mutations are modifications to the genetic code of DNA, for as when the nucleotide Guanine (G) turns to Thymine (T).

To know more about molecular clocks refer to:  brainly.com/question/8597562

#SPJ1

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Which statement regarding cholesterol is false? It is the precursor for steroid hormones. It is not usually a component of eukar
oksian1 [2.3K]

Answer:

It is not usually a component of eukaryotic membranes.

Explanation:

Cholesterol is responsible for modulating the fluidity of the cell membranes of eukaryotes.

It is produced in most animal cells, and its formation is substantially active in <u>liver</u> cells, where bile acids are synthesized from cholesterol.

In addition, cholesterol is the precursor of steroid hormones such as progesterone, testosterone, estradiol and cortisol.

Cholesterol (like other lipids) is <u>amphipathic</u>, meaning it has a polar head (hydrophilic) and an apolar tail (hydrophobic).

Given the above, it can be concluded that the false statement is "it is not usually a component of eukaryotic membranes".

3 0
3 years ago
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luda_lava [24]
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Which explanation describes why Archaea is placed into a different domain from bacteria?
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<h2>Alcoholic Fermentation</h2>

Explanation:

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