What are the reactants of cellular respiration? a) atp and water eliminate b) sugar and oxygen c) nadph and hydrogen d) carbon dioxide and water

sugar and oxygen. Organic compounds (e.g. sugars) and oxygen are both produced in autotrophs. Autotrophic products are used by heterotrophs to carry out cell respiration.

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.