Your Bacterium Is Growing on a Type of Medium Called

Multiple Choice

Your bacterium is growing on a type of medium called casein agar, which contains milk protein (casein) . There is a clear zone around the growth area of the bacterium, showing that it is synthesizing the enzymes needed to catalyze the breakdown of casein. These enzymes are considered ______.

A) apoenzymes
B) exoenzymes
C) ribozymes
D) endoenzymes