Tools
The diagrams below illustrate models of various chemical compounds.


salt
carbon dioxide
water
The diagrams suggest that compounds must be
A. made up of oxygen and one other chemical element.
B. made up of two or more of the same chemical elements only.
c. made up of two or more different chemical elements.
D. made up of only one chemical element.

both anaerobic and aerobic respiration use glucose (or other carbohydrates), proteins and lipids to produce atp and nadh. cell uses those energy molecules, obtained from food and   breaks them down during the chemical reactions of respiration. in anaerobic respiration, nadh is regenerated to nad+ by enzymes lactate dehydrogenase (lactate is produced, e.g. in muscle cells) or by alcohol dehydrogenase where ethanol is produced (alcohol fermentation), while in aerobic respiration, electrons from nadh are deposited in the mitochondria to regenerate nad+ (electron transport chain. anaerobic respiration produces 2 atp per molecule of glucose compared to aerobic respiration where about 38 atp molecules are produced.