How might a plant cope with the fact that the Calvin cycle uses more ATP than NADPH, yet produces roughly the same amount of both energy intermediates in photosystems I and II?
A. Increase the electrochemical gradient for H+ across the thylakoid membrane, producing more ATP but not NADPH.
B. Electron flow rate can be increased, increasing both ATP and NADPH production.
C. Plants often increase the amount of NADP reductase, thereby increasing NADPH production to match ATP output.
D. More pigment can be rapidly created for greater photosynthetic capacity, producing equal amounts of ATP and NADPH.
E. Photosynthesis can revert from a noncyclic to cyclic electron flow, producing more ATP than NADPH.
E. Photosynthesis can revert from a noncyclic to cyclic electron flow, producing more ATP than NADPH.
You might also like to view...
The organ where you would most likely expect to find actin microfilaments continuous with adherens junctions is the
A) liver. B) stomach. C) kidney. D) brain. E) heart.
Species turnover on islands has been observed to be low. What does this suggest about succession on islands?
A. Facilitation is of minor importance on islands. B. The species that initially colonize islands are random. C. Succession on most islands proceeds in a relatively predictable manner. D. The dominant, more important species tend to go extinct during succession on islands.
Organisms from which Domain would be found living in this habitat?
1.Bacteria
2.Archaea
3.Eukarya
4.Animalia
Type 1 diabetes mellitus is an absolute insulin deficiency resulting from insulin hyposecretion and requires insulin replacement therapy. Which of the following conditions would NOT be associated with this particular disorder?
A) loss of beta-islet cells B) destruction of beta-islet cells C) absence of beta-islet cells D) increased insulin resistance