All of the following conditions will cause an increase in the circulating levels of carbon dioxide in the blood, EXCEPT:Question 64Answera.anaerobic metabolism.b.lactic acidosis.c.acute hyperventilation.d.increased metabolism.

To determine which condition will not cause an increase in the circulating levels of carbon dioxide in the blood, we need to evaluate each option.

a. Anaerobic metabolism: Anaerobic metabolism occurs when there is a lack of oxygen available for cellular respiration. During anaerobic metabolism, carbon dioxide is produced as a byproduct. Therefore, anaerobic metabolism will increase the circulating levels of carbon dioxide in the blood.

b. Lactic acidosis: Lactic acidosis is a condition characterized by the buildup of lactic acid in the blood. Lactic acid is produced during anaerobic metabolism, which as mentioned earlier, increases carbon dioxide levels. Therefore, lactic acidosis will also cause an increase in the circulating levels of carbon dioxide in the blood.

c. Acute hyperventilation: Hyperventilation refers to rapid and deep breathing, which can lead to a decrease in carbon dioxide levels in the blood. However, the question asks for a condition that will not cause an increase in carbon dioxide levels. Therefore, acute hyperventilation is the correct answer as it will cause a decrease, not an increase, in the circulating levels of carbon dioxide in the blood.

d. Increased metabolism: Increased metabolism generally leads to an increase in the production of carbon dioxide as a byproduct of cellular respiration. Therefore, increased metabolism will cause an increase in the circulating levels of carbon dioxide in the blood.

In conclusion, the condition that will not cause an increase in the circulating levels of carbon dioxide in the blood is acute hyperventilation (option c).