Question

A scientist added a chemical to an animal to stop aerobic respiration. Which of the following is most likely to be affected by this treatment?

• A. Active transport of substances across the plasma membrane
• B. Passive transport of substances across the plasma membrane
• C. Diffusion of substances across the plasma membrane
• D. The thickness of the plasma membrane

Answer 1

The correct option is A Active transport of substances across the plasma membrane

When the aerobic respiration is stopped, there will be a shortage of ATP produced. Most of the ATP production takes place due to cellular respiration and oxidative phosphorylation. When ATP production is stopped, the ATP required for active transport of substances across the plasma membrane will not be available and thus active transport will shut down.