Kendrick goes to his neighborhood gym to exercise. The process of cellular respiration makes it possible for him to run on the treadmill and to lift weights. What do Kendrick's cells do during cellular respiration? A. His cells convert kinetic energy into chemical energy.

B. His cells use oxygen to break down food molecules to release energy.

C. His cells absorb light energy through the chlorophyll in their chloroplasts.

D. His cells combine water and carbon dioxide to produce oxygen and glucose.