Question

2. a protein that catalyzes (speeds up) a reaction without being changed by the?

A. reaction
B. substrate
C. enzyme
D. photosynthes cellular respiration

Answer 1

Enzyme

Step-by-step explanation:

An enzyme is an organic catalyst which is protein in nature.

As catalysts, they speed up or slow down the rate of chemical reactions in the body without themselves being used up.

Answer 2

C, enzyme.

Step-by-step explanation:

Hope this helps :)