Final answer:
The correct answer is that anaerobic metabolism produces lactic acid, as it occurs without oxygen and leads to the production of pyruvate which is then converted to lactic acid. The correct answer is b) anaerobic metabolism produces lactic acid.
Step-by-step explanation:
The true statement about the metabolism of glucose is that anaerobic metabolism produces lactic acid. During anaerobic metabolism, which occurs in the absence of oxygen, glucose is broken down in a process known as glycolysis, leading to the production of pyruvate and negligible amounts of ATP.
If oxygen is not available, pyruvate can be further metabolized into lactic acid. On the other hand, aerobic metabolism, which occurs in the presence of oxygen, primarily takes place in the mitochondria and produces carbon dioxide, water, and significantly more ATP by utilizing carbohydrates, fats, and proteins as fuel sources. Therefore, the correct answer is b) anaerobic metabolism produces lactic acid.