Immature sperm pass through the ____, a coiled duct on top of the testes, where they mature
a. epididymis
b. seminal vesicle
c. prostate
d. vas deferens
e. prostate
ANSWER: a
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During long-term potentiation the release of the neurotransmitter glutamate triggers the opening of sodium and calcium channels in the postsynaptic cell, increasing ion flow. What type of channel is responsible for this increase in ion flow?
A. voltage-gated ion channel B. ligand-gated ion channel C. ttretch-gated ion channel D. pump protein
Which of the following members of the normal microbiota inhibit the growth of Candida albicans?
A. E. coli B. Lactobacillus species C. Staphylococci species D. Propionibacterium species
The ability to taste PTC is a dominant trait. If a heterozygote woman has a child with a man who is not a taster, what is the chance their child will be a taster?
A. 50% B. 25% C. 100% D. 0% E. 75%
Net primary productivity represents:a
the rate at which energy is captured during photosynthesis. b. the amount of biomass in excess of that needed to support plant cell respiration. c. the amount of carbon dioxide produced by plants. d. plant reproduction per unit area per unit time. e. energy production in an area per unit time.