Which pair of statements correctly describes where each process handles carbohydrate?
ABoth processes build and break them inside the mitochondria only
BPhotosynthesis builds them in chloroplasts, respiration breaks them in mitochondria
CPhotosynthesis builds them in mitochondria, respiration breaks them in chloroplasts
DBoth processes build and break them inside the chloroplasts only
Answer & Solution
Correct answer: B. Photosynthesis builds them in chloroplasts, respiration breaks them in mitochondria
1. Photosynthesis absorbs light energy to build carbohydrates in chloroplasts.
2. Aerobic cellular respiration releases energy by using oxygen to metabolise carbohydrates in the cytoplasm and mitochondria.
3. Both processes use electron transport chains to capture the energy that drives other reactions.
4. Swapping the two organelles puts each pathway in the wrong compartment entirely.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 8 "Photosynthesis", section 8.3 Using Light Energy to Make Organic Molecules_
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