When Blood Glucose Levels Rise, Insulin Signals Cells to Take

question 7

Multiple Choice

When blood glucose levels rise, insulin signals cells to take up glucose, removing it from the blood. Diabetes mellitus is a disorder caused by a dysfunction in the insulin signaling system. There are two types of diabetes. People with type 1 diabetes must take insulin regularly, usually through injection. People with type 2 diabetes are not helped by supplemental insulin. What does this tell you about where the defect might be in these two disorders?

• A) Type 2 diabetes is probably caused by overproduction of insulin.
• B) Type 1 diabetes is probably caused by underproduction of insulin.
• C) Type 2 diabetes is probably caused by underproduction of insulin.
• D) Type 1 diabetes is probably caused by defective insulin receptors.

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