What role does play before cellular respiration can occur? a) blood releases energy from very small molecules. b) blood carries energy from cytoplasm to a mitochondrion c) bloods delivers oxygen and glucose to cells d) blood delivers carbon dioxide and water to cells.

Which statement is the best summary of the model? a-a series of aerobic and anaerobic reactions take place in cells b- the sun's energy moves through trophic levels in a food chain c-light energy is converted into stored chemical energy plants. d- food molecules are broken down in the cells if living things.