45.

Gout can result from

1. elevated PRPP (5-phosphoribosyl--pyrophosphate) synthetase.
2. deficiency in HGPRTase (hypoxanthine-guanine phosphoribosyl transferase).
3. impaired renal function.
4. deficiency in xanthine oxidase.

One or more answers are correct. Click on:

• a. if 1, 2, and 3 are correct
• b. if 1 and 3 are correct
• c. if 2 and 4 are correct
• d. if only 4 is correct
• e. if all are correct