Location of photosynthetic pigments in purple sulphur bacteria:
Correct answer: D. Cytoplasm
- A. Thylakoids
- B. Grana
- C. Stroma
- D. Cytoplasm
Explanation
Some bacteria are photosynthetic but they lack chloroplast. Their photosynthetic pigments are present in cytoplasm of cell. In purple sulfur bacteria the photosynthetic pigments such as, bacteriochlorophylls and caretinoids are located in the cytoplasm rather than within specialised membrane structure such as chloroplast. These pigments are dispersed through out the cytoplasmic region of bacteria and are responsible for capturing light energy during photosynthesis.
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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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