Symptoms of phenylketonuria (PKU) may be minimized or suppressed by a diet low in
A. serine.
B. glycine.
C. phenylalanine.
D. proline.
E. glutamic acid.
Answer: C
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Which of the following statements regarding enzymes is TRUE?
A. Enzymes decrease the free energy change of a reaction. B. Enzymes increase the rate of a reaction. C. Enzymes change the direction of chemical reactions. D. Enzymes are permanently altered by the reactions they catalyze. E. Enzymes prevent changes in substrate concentrations.
The posterior pituitary secretions produce their effects
a. on the gonads. b. in the thyroid glands. c. on adrenal glands. d. on mammary glands. e. on thirst mechanism.
In the hippurate hydrolysis test, what are some of the end products produced?
A. Sodium hippurate and hippuricase B. Ninhydrin and sodium C. Sodium benzoate and glycine D. Hippuricase and ninhydrin
Describe the similarities and differences observed among phototrophic bacteria
What will be an ideal response?