An action potential can best be described as a _____
a. trigger zone
b. kinetic activity
c. brief reversal in the polarity of the electric gradient
across the plasma membrane
d. peak of energy that does not resolve to its former state
e. brief increase in the polarity of the electric gradient
across the plasma membrane
ANSWER: c
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DNA microassays:
A. can reveal protein-protein interactions. B. demonstrate differential expression of genes. C. can reveal protein-RNA interactions. D. can be used to purify proteins that bind to epitope tags. E. are somewhat large and unwieldy but give a great deal of information.
At the cellular level, the development of an animal from a fertilized egg involves cell division by _____
a. meiosis b. mitosis c. differentiation d. morphogenesis e. cloning
Your finger touches a hot pot on the stove. Information is carried via ____ neurons to the ____, where
neurons carry information to the ____, making you aware of the hot pot.
a. afferent; basal ganglia; primary sensory area b. efferent; thalamus; sensory association area c. efferent; hippocampus; primary sensory area d. afferent; thalamus; primary somatosensory area e. interneurons; thalamus; somatomotor area
Vaccinia virus is often used in the technique to make
A. antibodies to toxin. B. an adjuvant. C. gamma globulin. D. a "Trojan horse" recombinant vaccine. E. a booster.