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WAEC Biology 2011 Question 26

Question 26

Photosynthesis and Plant Nutrition

The process whereby electrons are emitted from chlorophyll and returned to it unchanged is known as

  1. A.non-cyclic phosphorylation.
  2. B.photochemical reaction.
  3. C.photophosphorylation.
  4. D.cyclic photophosphorylation.
Show the answer and explanation

Answer: D (cyclic photophosphorylation.)

Explanation

In cyclic photophosphorylation the excited electrons travel a loop and come back to the same chlorophyll, making ATP on the way.