Question

Which substance is present at a lower concentration in the renal artery than in the renal vein?

• A. Amino acids
• B. Carbon dioxide
• C. Glucose
• D. Urea

Answer 1

The correct option is B

Carbon dioxide

Explanation of the correct option:

The correct option is B:

1. The kidney receives the oxygenated blood through the renal artery.
2. The kidney transports the deoxygenated blood through the renal vein.
3. Since the renal vein carries deoxygenated blood, Carbon dioxide is present in a lower concentration in the renal artery than in the renal vein.

Explanation of the incorrect options:

Option A:

1. Amino acids are present in a higher concentration in the renal artery than in the renal vein.

Option C:

1. Glucose is transported by the blood to all the parts.
2. Thus, the renal artery contains more glucose than the renal vein.

Option D:

1. The waste products are delivered to the kidney for filtration or excretion.
2. Hence, the renal artery contains more urea than the renal vein.