What do cellular respiration and fermentation have in common? They both harvest energy from sugars. They both end up with pyruvic acid. They both occur in the mitochondria. They both require oxygen to occur.

Cell division is important to single celled organisms because it allows the cells to reproduce. through cell division, cells make exact copies of themselves. when single celled organisms go through cell division, they make exact copies of themselves which is how they reproduce.

The answer is c) organisms that are sensitive to changes in temperature would die.