Which products of the light reactions are used in the Calvin cycle?
a. ADP and NADP+
b. water, O2, ATP.
c. CO2 and RuBP
d. electrons and photons
e. ATP and NADPH
ANSWER: e
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In which of the following properties are the Archaea more like eukaryotes than the bacteria?
A) size B) microtubules and microfilaments C) translation initiation D) mode of cell division E) both choices C and D
Concerning the role of the pancreas in digestion,
a. no digestion occurs in the pancreas. b. endocrine cells secrete bicarbonate, which helps neutralize highly acidic chyme. c. endocrine cells release enzymes that break down carbohydrates, fats, proteins, and nucleic acids in the small intestine. d. exocrine tissue produces insulin and glucagon, which help regulate the metabolism of sugar. e. all of these are true.
Activity of the neurotransmitter acetylcholine is brief because it
A) "self-destructs" shortly after leaving the presynaptic neuron. B) is transported back into the presynaptic neuron. C) diffuses out of the synaptic cleft. D) is pumped out of the synaptic cleft by the sodium-potassium pump. E) is rapidly broken down by enzymes in the synaptic cleft.
Which group includes all of the other groups?
A. Domain B. Order C. Family D. Genus E. Species