Interaction with a membrane-bound receptor will transduce the hormonal message via __.
A. depolarization
B. direct gene activation
C. a second messenger
D. endocytosis
Answer: C. a second messenger
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How many oxygen molecules may bind to a single molecule of hemoglobin?
A. 2 B. 4 C. 6 D. 8 E. 16
The reticular formation is a web of ________ scattered throughout the ________
A) gray matter; brainstem B) neurosomas; hypothalamus C) nerves; white matter in the cerebrum D) white matter; cerebellum E) gray matter; cerebrum
Which of components of a general reflex arc are listed in the order information typically flows through them following a stimulus?
A. effector, afferent pathway, integrating center, efferent pathway, receptor B. effector, efferent pathway, integrating center, afferent pathway, receptor C. integrating center, receptor, afferent pathway, efferent pathway, effector D. receptor, efferent pathway, integrating center, afferent pathway, effector E. receptor, afferent pathway, integrating center, efferent pathway, effector
A mixing contraction in the small intestine is called
A. peristalsis. B. segmental contraction. C. deglutition. D. mass movement.