During the first 30 minutes of heavy exercise ________.
A. the percentage of energy obtained from plasma free fatty acids exceeds that of mild exercise
B. the percentage of energy obtain from plasma glucose is less than that of moderate exercise
C. most energy is derived from glycogen and plasma glucose
D. All of the choices are correct.
Answer: C
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As sound levels increase in the spiral organ (of Corti), ________
A) inner hair cells stiffen the basilar membrane B) outer hair cells bend the cilia away from the kinocilium C) inner hair cells bend the cilia away from the kinocilium D) outer hair cells stiffen the basilar membrane
The eyes develop as evaginations from the ________.
A. neural crest cells B. telencephalon C. mesencephalon D. diencephalon E. myelencephalon
AIDS is caused by viruses that specifically invade _____.
A) the liver B) B cells C) T cells D) neutrophils
Which statement regarding dorsal and ventral roots is correct?
A. Dorsal roots carry efferent messages, while ventral roots carry afferent messages. B. Dorsal roots carry sensory messages, while ventral roots carry afferent messages. C. Dorsal roots carry motor messages, while ventral roots carry sensory messages. D. Dorsal roots carry afferent messages, while ventral roots carry efferent messages.