BIOLOGY
AMINO ACIDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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These amino acids have the R groups that have a significantpositive charge at pH 7.0 EXCEPT for one.
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Arginine
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Lysine
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Glycine
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Histidine
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Explanation:
Detailed explanation-1: -There are three amino acids that have basic side chains at neutral pH. These are arginine (Arg), lysine (Lys), and histidine (His).
Detailed explanation-2: -Basic amino acids, like arginine and lysine, on the other hand have a charge of +1 at pH 7 due to protonation of the the R-group amine.
Detailed explanation-3: -Glutamine is the only amino acid that is zwitterionic at pH 7. The structure of an amino acid is such that it allows it to behave as both, an acid and a base at a certain pH value.
There is 1 question to complete.