The normal human individual has how many
parathyroid glands?
a. 2
b. 3
c. 4
d. 5
e. 6
C
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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
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
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
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.