The ectoderm is to the central nervous system as the mesoderm is to the
A. epidermis.
B. respiratory tube.
C. digestive tract.
D. skeletal muscle.
E. peripheral nervous system.
D. skeletal muscle.
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The study of algae is referred to as
A. phycology. B. mycology. C. phytology. D. None of the choices are correct.
Monod's group found that that appearance of ?-galactosidase correlated with that of galactoside permease. This ultimately led his group to the conclusion that:
A. constitutive expression involved two genes. B. ?-galactosidase production is contingent on the presence of galactosidase. C. the expression of ?-galactosidase and permease is under the control of another gene. D. a mutation in the ?-galactosidase gene would decrease expression of a permease gene. E. a mutation in the regulator gene would decrease expression of galactosidase and permease.
Mature siRNA annealed to its target usually leads to translational repression when:
A. the target mRNA is lacking its 5' cap. B. the siRNA is only partially complementary to the target. C. the target does not contain an Argonaute binding site. D. the siRNA is perfectly complementary to the target.
NADPH is produced by
A. light reactions alone. B. neither the light reactions nor the Calvin cycle. C. the Calvin cycle alone. D. both light reactions and the Calvin cycle. E. NADPH production is not a part of photosynthesis.