Enzymatic Reactions Can Become Saturated as Substrate Concentration Increases Because

Multiple Choice

Enzymatic reactions can become saturated as substrate concentration increases because

A) enzymes have the maximum possible number of hydrogen atoms attached to them.
B) the concentration of substrate reaches a point at which it cannot increase any further.
C) substrates are inhibitors of enzymes.
D) the activation energy of the reaction reaches a point at which it cannot be lowered further.
E) there are a limited number of the enzyme molecules present.