GROWTH DEVELOPMENT CHILD
SUMMATIVE ASSESSMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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amino group
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carboxyl group
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phosphate group
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carbonyl group
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Detailed explanation-1: -Answer and Explanation: The answer is D) sterol. Amino acids have a general structure that is made up of the alpha-amino group, the alpha-carboxylic group, the side chain or known as R-group, and a central carbon. Sterol is not a component of an amino acid molecule.
Detailed explanation-2: -All amino acids have a general structure comprising of an alpha carbon atom, a carboxyl group, an amino group and a hydrogen atom. Therefore, from the options above, only A) Carboxyl functional group is present in all amino acids. Phosphate, methyl and ketone groups are not common in all amino acids.
Detailed explanation-3: -The amino acids most commonly phosphorylated are serine, threonine, tyrosine in eukaryotes, and also histidine in prokaryotes and plants (though it is now known to be common in humans).
Detailed explanation-4: -Correct option: (a) phosphorus Hence, phosphorus is not found in amino acids.