Van neil hypothesis about the production of oxygen during phosynthesis was based on the study and investigations on___________?
Correct answer: A. Bacteria
- A. Bacteria
- B. Algae
- C. Protenema
- D. Cyanobacteria
Explanation
Van Niel developed his hypothesis from studies of photosynthetic bacteria, especially purple and green sulfur bacteria, and proposed that oxygen comes from the electron donor rather than carbon dioxide. Students may choose cyanobacteria because they release oxygen, but Van Niel's key investigations involved non-oxygenic photosynthetic bacteria.
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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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