The normal human individual has how many

parathyroid glands?



a. 2
b. 3
c. 4
d. 5
e. 6


C

Biology & Microbiology

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During active transport, solutes are moving _______.

a. down their concentration gradient b. toward equilibrium c. against their concentration gradient d. it depends on what is being transported

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What is the type of speciation that can occur in an

instant with a change in chromosome number? a. temporal b. mechanical c. behavioral d. ecological e. polyploidal

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When an end product of a reaction is in excess and inhibits the first enzyme of the pathway, this is an example of positive feedback.

a. true b. false

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How does the number of infectious prions increase?

a. Prions reproduce by binary fission. b. Prions transform normal proteins into the misfolded beta-pleated sheet configuration; therefore, prions multiply by conversion. c. Prions form multimers which can then form more single copies of the prion protein. d. Prions reproduce by mitosis.

Biology & Microbiology