Of the following organs, which is NOT in the
abdominal cavity?
a. stomach
b. liver
c. heart
d. intestine
e. pancreas
C
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Which of the following are NOT important in chemical synapses?
A. gap junctions B. neurotransmitters C. specific neurotransmitter receptors D. secretory vesicles E. voltage-gated Ca2+ channels
Capsules
A. take up stain well. B. may correlate with an organism's ability to cause disease. C. are typically "negatively" stained. D. are stained as a wet mount. E. may correlate with an organism's ability to cause disease, are typically "negatively" stained, AND are stained as a wet mount.
Which statement best describes the value of fungi in the environment?
a. Fungi "fix" nitrogen from the air for use by plants. b. Fungi trap sunlight energy in the form of carbohydrates. c. Fungi release elements from organic matter. d. Fungi enrich the soil by decreasing the rate of decay of organic matter. e. Fungi remove toxic metals from the soil.
A loud sound can be distinguished from a soft
whisper because a. more neurons depolarize. b. each receptor depolarizes more fully. c. the frequency of neuron depolarization increases. d. more neurons depolarize, and the frequency of neuron depolarization increases. e. more neurons depolarize, each receptor depolarizes more fully, and the frequency of neuron depolarization increases.