Increased carbon dioxide in the blood increases respiration (breathing)rate.Which of these statements would apply to this mechanism?

Question

Quizplus · Accepted Answer

This is because increased respiration rate helps to eliminate excess carbon dioxide from the blood, bringing it back to normal levels. This is the definition of negative feedback, where a deviation from normal is corrected and brought back to normal. Option A is incorrect because this is a classic example of negative feedback, where the response opposes the stimulus to bring it back to normal. Option B is incorrect because it suggests that the increased respiration rate is responsible for a positive outcome, which is incorrect. Option D is incorrect because it suggests that the system goes further away from normal, which is also incorrect. Option E is partly correct, but only the option about decreasing carbon dioxide in the blood is relevant, and that is the reason why this is negative feedback.

Increased Carbon Dioxide in the Blood Increases Respiration (Breathing)rate