The dense fluid filled region in the chloroplast is____________?
Correct answer: B. Stroma
- A. Grana
- B. Stroma
- C. Thylakoid
- D. None of these
Explanation
The stroma is the dense, enzyme-containing fluid region surrounding the thylakoids inside a chloroplast, and it is the site of the Calvin cycle. Students may choose grana because they are another major chloroplast structure, but grana are stacks of membranes rather than a fluid-filled region.
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About Cellular Respiration
Cellular respiration releases energy from glucose through glycolysis, the link reaction, the Krebs cycle and the electron transport chain, producing ATP. The pathway differs in oxygen availability: aerobic respiration uses oxygen and yields more ATP, while anaerobic respiration produces much less ATP and forms lactic acid in muscles or ethanol and carbon dioxide in yeast.
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