Which of the following statements about amino acids is/are incorrect? 1. The formation of a dipeptide from two amino acid molecules leads to a loss of a water molecule. II. All standard amino acids can be synthesized by the organism. III. All essential amino acids are optically active. IV. Overall, naturally occurring amino acids are equally likely to be found having either an R or S configuration. V. All standard amino acids are neutral at physiological pH.

Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
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Chapter1: Biochemistry: An Evolving Science
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Which of the following statements about amino acids is/are incorrect?
I. The formation of a dipeptide from two amino acid molecules leads to a loss of a water molecule.
II. All standard amino acids can be synthesized by the organism.
II. All essential amino acids are optically active.
IV. Overall, naturally occurring amino acids are equally likely to be found having either an R or S configuration.
V. All standard amino acids are neutral at physiological pH.
II, IV, and V
II, III, IV, and V
II, III, and V
O , I, and II
O , II, and V
Transcribed Image Text:Which of the following statements about amino acids is/are incorrect? I. The formation of a dipeptide from two amino acid molecules leads to a loss of a water molecule. II. All standard amino acids can be synthesized by the organism. II. All essential amino acids are optically active. IV. Overall, naturally occurring amino acids are equally likely to be found having either an R or S configuration. V. All standard amino acids are neutral at physiological pH. II, IV, and V II, III, IV, and V II, III, and V O , I, and II O , II, and V
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