Question

the diagram shows the breakdown of glucose through three different reactions. what can be concluded from the diagram? anaerobic respiration occurs in mitochondria and in muscle cells. aerobic respiration occurs in yeast and in muscle cells. aerobic respiration produces carbon dioxide and water. anaerobic respiration produces carbon dioxide and water.

Explanation:

1. Anaerobic respiration occurs in the absence of oxygen. In yeast, it produces ethanol and carbon - dioxide; in muscle cells, it produces lactic acid. It does not occur in mitochondria (aerobic respiration occurs in mitochondria). So the first option is incorrect.
2. Aerobic respiration occurs in the presence of oxygen. Yeast and muscle cells mainly perform anaerobic respiration under certain conditions, not aerobic respiration as stated in the second option, so it is incorrect.
3. The diagram shows that in the presence of oxygen (aerobic respiration in mitochondria), glucose is broken down into carbon dioxide and water along with energy release. This makes the third option correct.
4. Anaerobic respiration does not produce carbon dioxide and water as shown in the diagram. So the fourth option is incorrect.

Answer:

C. Aerobic respiration produces carbon dioxide and water.