JAMB Biology 2020 Objective — Question 37
Question 37 of 40 from the Joint Admissions and Matriculation Board (JAMB) Biology 2020 Objective paper, with the correct answer and a full explanation.
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37. The oxygen released during photosynthesis is from (a) CO2 (b) enzymes (c) water (d) hydrogen ions
- A. A. CO2
- B. B. enzymes
- C. C. waterCorrect
- D. D. hydrogen ions
Explanation
The oxygen released during photosynthesis has been demonstrated to come from water: H2O -> H+ + OH-, 4OH- -> 2H2O + O2 + 4e-.
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