Enzymes for light-dependent reactions are present in:
Correct answer: D. Thylakoid membranes of the chloroplast
- A. Outer membrane of the chloroplast
- B. Inner membrane of the chloroplast
- C. Stroma of the chloroplast
- D. Thylakoid membranes of the chloroplast
Explanation
The correct answer is the thylakoid membranes of the chloroplast. Light-dependent reactions take place here, where chlorophyll and other pigments capture light energy. The thylakoid membranes also house the electron transport chain and ATP synthase, which are vital for converting light energy into chemical energy in the form of ATP and NADPH. The outer and inner membranes do not contain the necessary enzymes and structures for these processes, while the stroma is involved in the light-independent Calvin Cycle.
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Cellular respiration explains how cells release energy from glucose through glycolysis, the link reaction, Krebs cycle and electron transport chain. It includes ATP production, substrate-level and oxidative phosphorylation, aerobic versus anaerobic respiration, and the roles of mitochondria, oxygen and fermentation in energy transfer.
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