Enzyme molecules require a specific shape to perform their catalytic function. Which of the following might alter the shape of an enzymatic protein?

A. denaturing the protein
B. a change in salt concentrations or pH
C. heating the protein
D. mixing in a chemical that removes hydrogen bonds
E. all of the above


Ans: E. all of the above

Biology & Microbiology

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A. is a master control gene for eye development. B. codes for a protein that controls the expression of many other genes. C. mutant can cause aniridia in humans. D. is a homolog to the eyeless gene in Drosophila. E. All of the choices are correct.

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Because zooplankton do not need sunlight they tend to be most concentrated in deeper waters away from the surface

Indicate whether the statement is true or false

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Which hormone is synthesized by and acts on the stomach?

a. gastrin b. somatostatin c. CCK d. secretin e. GIP

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What are the overall (net) products of glycolysis?

a) 1 pyruvic acid, 4 ATP, 2 NADH b) 1 pyruvic acid, 2 ATP, 4 NADH c) 2 pyruvic acid, 4 ATP, 2 NADH d) 2 pyruvic acid, 2 ATP, 2 NADH

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