The glomerular filtrate contains the following except

1. Analyze the question We are asked which substance is NOT found in the glomerular filtrate. The glomerular filtrate is the fluid that passes from the blood in the glomerulus into the Bowman's capsule of the nephron.

2. Explain the concept: ultrafiltration Blood enters the glomerulus at high pressure (the afferent arteriole is wider than the efferent arteriole). This pressure forces small molecules out of the blood through the capillary walls and the Bowman's capsule lining into the nephron.

• Small molecules pass through: water, urea, glucose, amino acids, mineral salts (such as Na⁺ and Cl⁻), and vitamins.
• Large molecules and cells stay in the blood: red blood cells, white blood cells, platelets, and large plasma proteins (such as albumin and fibrinogen).

3. Check each option

• A. Water: small molecule, so it is filtered. It is present.
• B. Urea: small nitrogenous waste, so it is filtered. It is present.
• C. Blood corpuscles: red cells, white cells and platelets are too large to pass through, so they are NOT present.
• D. Glucose: small molecule, so it is filtered. It is present, and it is later reabsorbed in the proximal convoluted tubule.

4. Answer The correct option is C. Blood Corpuscles.

5. Exam tip Remember: "Filtrate = plasma minus proteins and cells." If a substance is bigger than a small molecule (cells or large proteins), it stays in the blood. If you see blood cells or protein in a person's urine, it signals kidney damage, which is a common follow-up question in WASSCE and NECO.