Some enzymes contain molecules in the active site that help facilitate chemical transformations. These molecules are called:
A) substrates. B) coenzymes. C) products. D) co-substrates.
Answer: B
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Cocaine stops the reuptake of ________ from synaptic clefts
a. norepinephrine only b. serotonin only c. dopamine only d. all of the choices
Which facial bone forms the upper jaw and a portion of the hard palate and eye sockets?
Immediately after fertilization of a Drosophila egg, the zygote nucleus undergoes a series of divisions. Subsequent nuclear migration generates a(n) ________
A) homeodomain B) syncytium C) zygote D) maternal effect E) cleavage nucleus
In what way are a human and a crab similar?
A. Vertebrates and arthropods are deuterostomes. B. Both have closed circulatory systems. C. Both have muscles that pull against rigid skeletons. D. Both have a continuous growth pattern.