Name the following by choosing the correct option:
The process of conversion of ADP to ATP during photosynthesis:
Topic: Photophosphorylation
Try it
Pick an option and check your answer. The full worked answer is below either way.
Answer
(b) Photophosphorylation.
Break the word into its parts and it defines itself: PHOTO (light) + PHOSPHORYLATION (the adding of a phosphate group). Adding a third phosphate to ADP produces ATP, using light energy.
THE TRAP is PHOTOLYSIS, which also begins with PHOTO and also occurs in the light reaction. But -LYSIS means SPLITTING, and photolysis is the splitting of WATER into hydrogen and oxygen.
The two light-reaction events side by side: PHOTOLYSIS — water is split; oxygen released PHOTOPHOSPHORYLATION — ADP + phosphate becomes ATP Read the SECOND half of the word, not the first, and they separate cleanly.
Photophosphorylation.