FUND.OF GEN CHEM CHAP 1-13 W/ACCESS
FUND.OF GEN CHEM CHAP 1-13 W/ACCESS
16th Edition
ISBN: 9781323406038
Author: McMurry
Publisher: PEARSON C
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Chapter 25.2, Problem 25.1P
Interpretation Introduction

Interpretation:

Given statements has to be identified whether true or false and if false the reason has to be explained.

Concept introduction:

  • Many amino acids are linked together through amide bonds to form a biologically large molecule known to be proteins.
  • Amino acid had both amino functional group and carboxyl functional group in a molecule.
  • Amino functional group is (NH2) and carboxyl functional group is (COOH).
  • Amino acid pool is the entire collection of free amino acids in the whole body.

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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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Chapter 25 Solutions

FUND.OF GEN CHEM CHAP 1-13 W/ACCESS

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