Question

which of the following is a function of the kidneys?
making glucose from non - carbohydrates.
production of insulin.
absorption of nutrients from food.
acid - base balance of the body.

Explanation:

• Making glucose from non - carbohydrates (gluconeogenesis) is mainly a function of the liver.
• Insulin is produced by the beta cells of the islets of Langerhans in the pancreas.
• Absorption of nutrients from food occurs mainly in the small intestine.
• The kidneys play a crucial role in maintaining the acid - base balance of the body. They regulate the levels of hydrogen ions (\(H^{+}\)) and bicarbonate ions (\(HCO_{3}^{-}\)) in the body fluids.

Answer:

Acid - base balance of the body.