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Chapter 16: Q. 16.7 (page 581)

Why do enzymes function only under mild conditions?(16.4,16.5)

Short Answer

Expert verified
  • The enzymecan only function under mild conditions.

Step by step solution

01

Introduction Enzymes need temperature to function

  1. Generally, catalysts require high temperature and high pressure.
  2. Enzymes are biological catalysts that work only under physiological conditions: pH7.4 and 37掳C.
  3. Enzymes catalyze biological activity bylowering the activation energy.
02

ExplanationThe enzyme can only function  under mild conditions. 

  1. Most enzymes are globular proteins.
  2. At high temperatures, the tertiary structure is distorted and inoperable.
  3. At pH above or below the optimum pH, the structure of the enzyme changes and the active site is destroyed.
  4. Therefore, the enzyme can only function under mild conditions.

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Most popular questions from this chapter

Indicate whether each of the following statements describes primary, secondary, tertiary, or quaternary protein structure:

a.Rgroups interact to form disulfide bonds or salt bridges.

b. Peptide bonds join amino acids in a polypeptide chain.

c. Several polypeptides in a beta-pleated sheet are held together by hydrogen bonds between adjacent chains.

d. Hydrogen bonding between amino acids in the same polypeptide gives a coiled shape to the protein.

Draw the structure of each of the following amino acids at physiological pH:

a. glycine

h. T

c. glutamate

d. Phi

A portion of a polypeptide chain contains the following sequence of amino acids:

- Leu-Val-Cys-Asp-

a. Which amino acids are likely to be found on the inside of the protein structure? Why?

b. Which amino acids would be found on the outside of the protein? Why?

c. How does the primary structure of a protein affect its tertiary structure?

Explain why each of the following pairs are complementary proteins:

a. beans and outs

b. almonds and peanuts

Draw the condensed structural formula for each of the following pairs, and give their three-letter and one-letter abbreviations:

a. alanylations

b. serylpheaylalanine

c. glycylalanylvaline

d. valyliwoleucyltrypeophan
See all solutions

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