Question

what is the name of the cavity inside the kidney that collects urine?

a. renal vein
b. ureter
c. urinary bladder
d. renal pelvis

what nutrient is ammonia a waste product of?

a. vitamins
b. protein
c. fat
d. carbohydrate

Explanation:

Identify the kidney cavity that collects urine

The first question asks for the name of the cavity inside the kidney that collects urine.

• The renal vein is a blood vessel that drains blood from the kidney.
• The ureter is a tube that transports urine from the kidney to the bladder.
• The urinary bladder is an external organ that stores urine.
• The renal pelvis is the funnel-like dilated part of the ureter in the kidney that acts as a funnel for urine flowing to the ureter.

Identify the nutrient source of ammonia waste

The second question asks which nutrient ammonia is a waste product of.

• Ammonia (\(\text{NH}_3\)) is a nitrogenous waste product.
• Among the options (vitamins, protein, fat, carbohydrate), proteins are composed of amino acids, which contain nitrogen-rich amine groups (\(-\text{NH}_2\)).
• The deamination of amino acids during protein metabolism produces toxic ammonia, which is then converted to urea or uric acid in many animals.

Answer:

Question 1

• a. Renal vein
• b. Ureter
• c. Urinary bladder
• d. Renal pelvis (Correct answer)

Question 2

• a. Vitamins
• b. Protein (Correct answer)
• c. Fat
• d. Carbohydrate