Biology - Study Mode

[#236] In mammals, an important role of excretion is played by ________
Correct Answer

(B) Kidneys

Explanation

Solution: The kidneys are bean-shaped organs that serve several excretory roles apart from the essential regulatory roles in mammals. They remove from the blood the nitrogenous wastes such as urea, as well as salts and excess water, and excrete them in the form of urine. In producing urine, the kidneys excrete nitrogenous wastes such as urea and ammonium.

[#237] Nephron is related to which of the following system of human body?
Correct Answer

(B) Excretory system

Explanation

Solution: Excretory system consists of specialized structures and capillary networks that assist in the excretory process. The human excretory system includes the kidneys and their functional unit, the nephron.

[#238] Dialysis is used to perform the function of
Correct Answer

(D) Kidney

Explanation

Solution: When your kidneys fail, dialysis keeps your body in balance by: removing waste, salt and extra water to prevent them from building up in the body, keeping a safe level of certain chemicals in your blood, such as potassium, sodium and bicarbonate and helping to control blood pressure.

[#239] Excretion is best described as the removal of
Correct Answer

(B) Metabolic wastes from a cell

Explanation

Solution: Excretion is best described as the removal of metabolic wastes from a cell.

[#240] Islets of Langerhans are present in
Correct Answer

(C) Pancreas

Explanation

Solution: Islets of Langerhans are islands of endocrine cells scattered throughout the pancreas.