Fill in the blanks. 12. _________are the basic units of structure and function in living things 13. A(n)__________is a group of similar cells that perform a specific function in an organism. 14. __________are nerve cells that carry response information to muscles and organs. 15. Carbon dioxide and________ are outputs of cellular respiration. 16. __________is essential to living things because many of the chemical reactions that occur in living things require it. 17. scientists did not discover the cell until the__________ was invented because cells are too small to see without one.
The correct answer would be pathway C.
Pathway C represents aerobic respiration whereas pathways A and B represent fermentation.
Under aerobic respiration, the cell or organism is able to completely oxidize the glucose.
It produces a large amount of energy (approximately 36-38 ATP) as compared to the fermentation which only produces two molecules of ATP.
Most of the reactions of aerobic respiration take place in the mitochondria.
It includes glycolysis, pyruvate decarboxylation, Krebs cycle, electron transport chain, oxidative phosphorylation.