Type I diabetes is caused when an individual does not produce insulin. Which of the following statements regarding insulin is TRUE? A. Insulin is the effector that controls blood sugar. B. Insulin is the receptor that triggers the negative feedback mechanism that controls blood sugar. C. Insulin is the stimulus for the positive feedback mechanism that controls blood sugar. D. Insulin is the chemical messenger released from the pancreas when blood sugar is too high.

Option-A

Explanation:

Diabetes is a condition arise in human body when the body is not able to utilise the produced insulin or the body is not able to produce insulin.

The type I diabetes is caused when the insulin is not produced by the human body and the blood sugar level rises.

The insulin is a hormone secreted by the pancreas which play a crucial role in the maintain the sugar level in the bloodstream. This hormone allows the cells to uptake glucose from the blood as it opens the GLUT transporter in the cells.

In the given question, since the cells are not able to uptake the glucose due to low level of insulin therefore this shows that the insulin controls the sugar level.

Thus, Option-A is the correct answer.

Type I diabetes is the