Answer:
There are four different nitrogenous bases.
Explanation:
These four include adenosine, thymine, cytosine, and guanine for DNA. Hope this helped :)
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Answer:
(D) The protein that is first made gets modified afterwards
Explanation:
The first amino acid in any protein in eukaryotes is always methionine (Met). But, in some proteins any amino acid other than methionine may be found at N terminus of a protein. Like in this example, the HBB protein starts with a valine (Val) instead of methionine. It happened because of post-translational modification which includes the action of aminopeptidases which cleave 1 or 2 amino acids from N terminus of a protein as a result of which any amino acid other than methionine may exist at amino terminus.
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Answer:
Melanin is the not the only pigment that can influence skin color. Carotene, found in plants such as carrots, can accumulate in the stratum corneum, and hypodermis can give the skin an orange hue.
