When an enemy cell is present, a(n) ________ secretes perforins, which bore a hole in the enemy cell membrane.
A. natural killer cell
B. interferon
C. opsonization
D. interleukin
E. antibody
Answer: A
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The mushroom poison muscarine can bind to receptors on ________
A) cell bodies and dendrites of parasympathetic postganglionic neurons B) cell bodies and dendrites of sympathetic postganglionic neurons C) the hormone producing cells of the adrenal medulla D) all effector cells stimulated by postganglionic cholinergic fibers
The corpus callosum interconnects the
a. brain stem and cerebellum. b. brain stem and diencephalon. c. hypothalamus and thalamus. d. two cerebral hemispheres. e. two hemispheres of the cerebellum.
In order to be effective against high cholesterol, statins must ________.
A. stimulate proconvertin B. inhibit streptokinase C. inhibit HMG-coenzyme A reductase D. All of the choices are correct.
Which of the following are parts of the inflammatory response in skin? Check all that apply.
A. Pain B. Vasoconstriction C. Rapid clotting D. Redness