A Levels Biology (9700)•9700/12/O/N/18
Explanation
ATP Production Sites in Green Plants
Steps:
- Evaluate statement 1: ATP is produced in mitochondria via cellular respiration, which occurs in plant cells.
- Evaluate statement 2: ATP is produced in chloroplasts during photosynthesis, the light-dependent reactions.
- Evaluate statement 3: ATP does not form part of DNA; DNA consists of nucleotides (adenine, thymine, cytosine, guanine) linked by phosphodiester bonds, while ATP is a separate energy molecule.
- Select option matching correct statements 1 and 2.
Why B is correct:
- B identifies ATP production in both mitochondria (respiration) and chloroplasts (photosynthesis), aligning with plant cell bioenergetics.
Why the others are wrong:
- A includes incorrect statement 3.
- C excludes correct statement 2.
- D excludes correct statement 1.
Final answer: B
Topic: Photosynthesis as an energy transfer process
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