The rate limiting step can be defined as a level of enzyme activity that can be regulated to be __________ even when substrate levels are __________.
A) high; high
B) low; high
C) high; low
D) low; low

Question

Quizplus · Accepted Answer

The rate limiting step is defined as the slowest step in a metabolic pathway and it can be regulated so that enzyme activity is low even when substrate levels are high. Therefore, the correct answer is B, where enzyme activity is low even when substrate levels are high.

The Rate Limiting Step Can Be Defined as a Level