Insulin Is a Hormone That Regulates Blood Glucose Levels

Multiple Choice

Insulin is a hormone that regulates blood glucose levels. It is released when glucose levels increase above normal. Based on the concept of negative feedback, what effect will insulin have on blood glucose levels?

A) It will decrease them.
B) Insulin does not regulate blood glucose levels.
C) Insulin will not affect glucose levels.
D) It will increase them.
E) It makes them go both up and down.