Question

in which of the following processes is chemical energy converted to mechanical energy? a) cellular respiration b) muscle contraction c) photosynthesis d) a rock rolling down a hill

Explanation:

Cellular respiration converts chemical energy in glucose to ATP. Muscle contraction uses the chemical - energy stored in ATP to generate mechanical force. Photosynthesis converts light energy to chemical energy. A rock rolling down a hill is a conversion of potential energy to kinetic energy (mechanical energy conversion within mechanical forms).

Answer:

B. muscle contraction