In which of the following location enzymes controlling cellular respiration are present____________?
Correct answer: C. Milochondria
- A. Nucleus
- B. Chlorophast
- C. Milochondria
- D. Ribosome
Explanation
In eukaryotic cells, the major enzymes controlling aerobic cellular respiration are located in mitochondria, especially the matrix and inner mitochondrial membrane. A student may choose chloroplasts because they also contain energy-related enzymes, but chloroplasts perform photosynthesis rather than cellular respiration.
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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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