BIOCHEMISTRY
BIOCHEMISTRY
8th Edition
ISBN: 9781319296186
Author: BERG
Publisher: MAC HIGHER
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Chapter 21, Problem 18P
Interpretation Introduction

Interpretation:

Glycogen synthesis and glycogen breakdown are reciprocally regulated. The importance of this regulation should be determined.

Concept introduction:

Phosphorylated and dephosphorylated enzymes participates in glycogen synthesis and glycogen breakdown are reciprocally regulated.

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At a pH equal to the isoelectric point (pl) of alanine, the net charge of alanine is zero. Two structures can be drawn that have a net charge of zero, but the predominant form of alanine at its pl is zwitterionic. CH3 H,N CH3 ** H¸N-C H Zwitterionic H Uncharged OH Select statements that explain why alanine is predominantly zwitterionic at its pl. pk of alanine's amino group is more than its pl. pk of alanine's carboxyl group is more than its pl. PK of alanine's carboxyl group is less than its pl. pk of alanine's amino group is less than its pl. Correct Answer What fraction of alanine is in the completely uncharged form at its pl? 1 in 2.2 × 107 1 in 1.6 × 10² 1 in 4680 1 in 9460
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