What event accompanies energy absorption by chlorophyll (or other pigment molecules of the antenna complex)?
A) ATP is synthesized from the energy absorbed.
B) A carboxylation reaction of the Calvin cycle occurs.
C) Electrons are stripped from NADPH.
D) An electron is excited.
D
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Two muscle groups that oppose the action of each other include flexors and extensors, like the biceps and triceps. These muscle groups are known as:
A. agonists B. antagonists C. synergists D. contragonists
Sea cucumbers and sedentary annelid worms share all but which in common?
a. both can be deposit feeders. b. both have oral structures to collect detritus. c. similar body segmentation. d. digestive tract is a straight tube
Which letter points to the counterpart of a stem
in a flowering plant? a. A b. B c. C d. D e. none of these
The fermentation pathway serves to recycle NADH back into NAD+.
a. true b. false