The muscles of respiration are
A) smooth muscle, innervated by the somatic nervous system.
B) smooth muscle, innervated by the autonomic nervous system.
C) smooth muscle, without innervation.
D) skeletal muscle, innervated by the somatic nervous system.
E) skeletal muscle, innervated by the autonomic nervous system.
Answer: D) skeletal muscle, innervated by the somatic nervous system.
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Which is the principle waste product if the body has excess amino acids?
a. Ammonia b. Nitrogen c. Urea d. Carbon dioxide
The net direction that an ion or molecule moves is
a. dependent upon the size of the molecule. b. unpredictable because movement is random. c. influenced by the temperature of the medium. d. influenced by the membranes in the vicinity. e. the result of concentration differences.
Which of these best describes Type II survivorship?
A) There is high survivorship for the very young. B) Most individuals survive to older age intervals. C) Survivorship is constant over the lifespan. D) Survivorship is high for the few individuals that survive to a certain age.
Anabolic and catabolic pathways use different cofactors for similar reactions.
Answer the following statement true (T) or false (F)