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
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The Pax6 gene
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.
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
Which hormone is synthesized by and acts on the stomach?
a. gastrin b. somatostatin c. CCK d. secretin e. GIP
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