The NADPH required for carbon dioxide fixation during the Calvin cycle is formed
A) only in C4 plants.
B) by the reduction of oxygen.
C) during the light reactions.
D) in the mitochondria.
E) by the hydrolysis of ATP.
C
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Prey reduce their risk of predation through physical and behavioral defenses. Which of the following is NOT a physical defense for the reduction of predation?
a) the camouflage of a praying mantis b) the spiciness of a jalapeno pepper c) the warning coloration of a monarch butterfly d) the alarm call of a Belding's ground squirrel e) the armor of an armadillo
An important mediator of a type I hypersensitivity reaction is
a. complement. b. antigen-antibody immune complexes. c. T cells. d. histamine.
Babies born before _____ after fertilization are considered premature.
A. 36 weeks B. 37 weeks C. 38 weeks D. 39 weeks E. 40 weeks
Molecules are made up of
A. atoms. B. cells. C. organisms. D. organs. E. populations.