3 2.3 When an enzyme is present for a chemical reaction
1
U
1. The reaction requires less energy
II. No reactants are required
III. The enzyme can be used over and over again.
a. I only
b. I and II only
c. I and III only
d. II and III only
e. I, II, and III

Chloroplasts manufacture food; mitochondria break down the food and convert it into energy.

Explanation:

Functions of chloroplasts: help make food

Functions of mitochondria: Break down the food and convert it into energy.

Functions of vacuole: stores water

Functions of the nucleus: direct the functions of the cell