A hormone made in the pancreas that helps the body use sugar as a source of energy.

A hormone made in the pancreas that helps the body use sugar as a source of energy.

• A. Glucagon
• B. Somatostatin
• C. Insulin
• D. Amylin

Answer: (C)

Insulin is the hormone produced by the beta cells of the pancreas that lets body cells take in and use glucose for energy. After you eat, blood glucose rises and insulin is released, signaling muscle and fat cells to absorb glucose via GLUT4 transporters and to funnel it into glycolysis and glycogen synthesis. It also promotes fat storage, helping the body store excess energy as fat. This is why insulin is described as the hormone that enables glucose to power the body's cells. Glucagon, in contrast, raises blood glucose during fasting by signaling the liver to release glucose, while somatostatin and amylin have other regulatory roles that don’t directly drive glucose uptake for energy in the same way.

Insulin is the hormone produced by the beta cells of the pancreas that lets body cells take in and use glucose for energy. After you eat, blood glucose rises and insulin is released, signaling muscle and fat cells to absorb glucose via GLUT4 transporters and to funnel it into glycolysis and glycogen synthesis. It also promotes fat storage, helping the body store excess energy as fat. This is why insulin is described as the hormone that enables glucose to power the body's cells. Glucagon, in contrast, raises blood glucose during fasting by signaling the liver to release glucose, while somatostatin and amylin have other regulatory roles that don’t directly drive glucose uptake for energy in the same way.