Passive immunity lasts
A. from days to weeks, and involves development of memory cells.
B. from days to weeks, and does not involve development of memory cells.
C. from years to a lifetime, and involves the development of memory cells.
D. from years to a lifetime, and does not involve development of memory cells.
B
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Select the statement which is true regarding independent assortment
A) Its effects are significant in meiosis and in mitosis. B) It only occurs in meiosis II. C) It is a significant source of genetic variation only during meiosis I. D) It is a significant source of genetic variation that occurs in meiosis I and meiosis II.
The micturition reflex is activated by the stretch of the bladder, which activates what?
A) parasympathetic afferents B) parasympathetic efferents C) somatic afferents D) sympathetic afferents E) stretch receptors
A person with endemic goiter suffers from:
A. a hypofunctioning adrenal gland. B. a hyperfunctioning adrenal gland. C. a hypofunctioning thyroid gland. D. a hyperfunctioning thyroid gland.
When sound waves bend stereocilia, what happens?
A) Hair cells depolarize, releasing neurotransmitter, and triggering an action potential. B) Hearing loss results. C) Hair cells hyperpolarize as potassium flows into the cell through open channels. D) The force of the sound waves is converted into mechanical energy.