Insulin is a kind of

Correct option is A

The correct answer is:(A) Hormone

Explanation:
Insulin is a hormone produced by the pancreas, specifically by the beta cells of the islets of Langerhans. It plays a crucial role in regulating blood sugar levels by promoting the absorption of glucose into cells for energy production or storage as glycogen. Insulin helps lower blood sugar levels after eating.

Information Booster:
• Insulin is a protein hormone that helps regulate glucose metabolism in the body.
• It is produced and secreted by the pancreas, an endocrine organ.
• Insulin enables cells in the liver, muscles, and fat tissues to absorb glucose from the blood.
• A lack of insulin or ineffective insulin leads to conditions such as diabetes mellitus.
• Insulin therapy is commonly used to manage type 1 and type 2 diabetes.

Additional Information:
•  Plasma: Plasma is the liquid component of blood and does not have a role in hormone secretion.
• Enzyme: An enzyme is a protein that catalyzes biochemical reactions, but insulin is a hormone, not an enzyme.
•  Vitamin: Vitamins are organic compounds required in small amounts for normal metabolic function, but insulin is a hormone, not a vitamin.