In the Calvin cycle, ATP is required to __________
A. phosphorylate 3-PGA
B. reduce 3-PGA
C. reduce triose phosphates
D. carboxylate RuBP
E. reduce RuBP
A
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Active transport
a. helps establish the resting potential of a neuron. b. counters the process of diffusion. c. allows transport of ions across the plasma membrane of the neuron against the concentration gradient. d. helps establish the resting potential of a neuron and counters the process of diffusion. e. does all of these.
Research on speciation of Hawaiian crickets, shown in the accompanying figure, has led researchers to conclude that ________
A) these cricket species have diverged by a mechanism known as assortative mating B) females of different species have strong preferences for the singing pulse rate of the males of their own species C) female preference for male singing pulse rate is genetically linked to the combination of genes regulating the singing pulse rate of males D) All of the above are accurate.
Which phrase best describes the proton-motive force?
a. the amount of energy required to protonate a glucose molecule b. the force needed to move protons into the inner mitochondrial space c. the free energy associated with the removal of hydrogen from NADH d. the combination of a proton and voltage gradient across the membrane
The condition known as cri-du-chat syndrome in humans has a genetic constitution designated as ________
A) trisomy B) triploidy C) 45, X D) 46, 5p- E) heteroplasmy