Thylakoid membranes contain:
Correct answer: A. Several kinds of pigments
- A. Several kinds of pigments
- B. Only chlorophylls
- C. Only carotenoids
- D. Only xanthophylls
Explanation
Thylakoid membranes are integral to photosynthesis, as they house a variety of pigments. These include chlorophylls, which are primarily responsible for capturing light energy, and accessory pigments like carotenoids and xanthophylls, which expand the range of light wavelengths that can be absorbed. This diversity of pigments allows plants to maximize their efficiency in capturing light energy. The incorrect options highlight only one type of pigment, failing to recognize the full complement of pigments present in the thylakoid membranes.
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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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