Question

question 9 of 10
which material is a source of the organic molecules that animals use in aerobic cellular respiration?
a. rock
b. air
c. food
d. sunlight

Explanation:

Animals obtain organic molecules for aerobic cellular respiration from food. Food contains carbohydrates, fats, and proteins which are broken - down to release energy. Rocks are inorganic and do not provide organic molecules for respiration. Air provides oxygen for aerobic respiration but not organic molecules. Sunlight is used by plants for photosynthesis, not a source of organic molecules for animals' respiration.

Answer:

C. Food