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
You might also like to view...
Which of the following is not an essential component of the bacterial initiation stage of translation?
A. mRNA B. IF-2 C. ATP D. N-formylmethionyl-tRNAfMet
Hypothesis I: A flavin pigment absorbs blue light; this pigment then activates the proton pump.Hypothesis II: When CO2 concentration rises, a membrane receptor inactivates the proton pump.Stomata opening after illumination following eight hours in darkness: plant is Xanthium pennsylvanicum.
A. Supports both hypothesis I and II. B. Supports only hypothesis I. C. Supports only hypothesis II. D. Supports neither hypothesis.
The similarities in function of hummingbird wings and the wings of a butterfly reflect
A) homology but not analogy. B) homology through convergent evolution. C) analogy and homology. D) analogy but not homology.
What is the basis of the typical -70 mV resting potential in neurons? Rank the factors in order from most important to least important.____ K+ equilibrium potential____ Ca+2 equilibrium potential____ Na+ equilibrium potential
What will be an ideal response?