Example — amino acid connectivity

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Question 1 of 2

Replacing the side chain of alanine with hydrogen produces which amino acid?

A. Alanine

B. Glycine

C. Valine

D. Serine

An alpha carbon is attached to amino, carboxyl, hydrogen, and methyl groups. Which feature makes it a chiral center?

A. It has a double bond to oxygen.

B. Two attached groups are identical.

C. All four attached groups differ.

D. Its side chain contains nitrogen.