Signal molecule receptors exhibit
A) competition and saturation only.
B) saturation only.
C) specificity only.
D) competition only.
E) specificity, competition, and saturation.E) specificity, competition, and saturation.
E) specificity, competition, and saturation.
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The neuromuscular junction
a. is the junction between a motor neuron and a skeletal muscle fiber. b. transmits an action potential between the nerve cell and muscle cell on a one-to-one basis. c. may produce either an EPSP or an IPSP on the motor end plate. d. both (a) and (b) above. e. all of these answers.
The inflated lungs of a fresh pluck ________
A) remain a tan/brown color, since it is no longer living tissue B) change color and become paler as the lungs increase in size C) feel like a soft balloon D) feel like a soft sponge
Which of the following is NOT a part of the swallowing reflex?
A. Respiration is inhibited. B. The glottis closes. C. The upper esophageal sphincter relaxes. D. The lower esophageal sphincter relaxes. E. The pyloric sphincter relaxes.
Label B represents which of the following structures?
A) blastocoele
B) blastocyst
C) trophoblast
D) developing villi
E) chorion