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Which of these are not present in every amino acid?

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in Biology – Class 11 by (272k points)
Which of these are not present in every amino acid?

(a) Amino group

(b) Acidic group

(c) α-carbon

(d) Sulphur

This question was posed to me during an online interview.

The question is from Biomolecules in portion Biomolecules of Biology – Class 11

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The correct option is (d) Sulphur

Easiest explanation: Amino acids are the building blocks of proteins. The have a chiral carbon or α-carbon. It contains one amino group and one acidic group. Only a few amino acids such as cysteine and methionine contain Sulphur.

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