Question

wednesday 9/10: respiration lab based on the lab, what can be a claim about exercise and breathing rate? a) exercise decreases breathing rate. b) breathing rate stays the same regardless of activity c) exercise increases breathing rate. d) watching a video has no effect on breathing rate.

Explanation:

To determine the correct claim about exercise and breathing rate, we analyze each option:

• Option A: Exercise increases the body's oxygen demand, so breathing rate should increase, not decrease. Eliminate A.
• Option B: Activity (like exercise) changes the body's oxygen and carbon dioxide levels, so breathing rate changes. Eliminate B.
• Option C: During exercise, muscles need more oxygen, so the respiratory system increases breathing rate to supply more oxygen. This is consistent with biological principles.
• Option D: The question is about exercise and breathing rate, not watching a video. Eliminate D.

Answer:

C) Exercise increases breathing rate.