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Home Q & A Board Biology-Related Homework Help Biochemistry
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bubblegum123 bubblegum123
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6 years ago
Cyclic photophosphorylation takes place when:
 
  a. there is not enough light to activate the PSII complex.
  b. NADPH is high, therefore energy is used to drive the citrate cycle.
  c. ferredoxin is used to reduce the Mn-cluster.
  d. the proton gradient is not high enough to go all the way through the system.
  e. NADPH/NADP+ ratio is high, energy is used in generating ATP.
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MulattaMulatta
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