Which is a reactant in the cellular respiration reaction? a. water b. oxygen c. mitochondria d. cytoplasm

The answer should be B, oxygen.

Take a look at the word equation for cellular respiration:
Glucose + oxygen➡️ Carbon dioxide + water + energy

It is where the cell uses glucose and oxygen to make carbon dioxide, water and energy.

Therefore, since reactant is the substance that is involved in the reaction, so the only choice is oxygen.

Meanwhile water is the product of the reaction, and mitochondria and cytoplasm is the structures of cell.

Ifound this information on google “yes. they have a mouth and brain at one end and an anus at the opposite end. what characteristics distinguish an annelid from other worms? annelids have segmented bodies and a coelem which is a tube filled with fluid and contains most of the organs.“ i hope it you