6. What is true of the organic molecules that can be used in aerobic cellular respiration?
a. Lipids and proteins can be used, but carbohydrates must be in the form of monosaccharides. b. Carbohydrates and lipids can be used, but not protein. c. Only carbohydrates can be used. d. Carbohydrates, proteins, and lipids can all be used, but enter the cycles at different places.