Class 12 Biology · Chapter 2 · Test 1
Kidney and Nephron
40 MCQs
40 questions · 35 min · 40 marks
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Sample questions
The first 5 of 40. Try each one, then tap to see the answer.
Question 1
Excretion is the process by which an organism eliminates its:
- AUndigested food
- BMetabolic wastes
- CHormones
- DNutrients
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Answer: B
Excretion is the elimination of metabolic wastes such as nitrogenous wastes, extra water and extra salts.
Question 2
Which of the following is NOT an essential role of the urinary system?
- ANitrogenous waste removal
- BOsmoregulation
- CpH and ion regulation
- DDigestion of proteins
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Answer: D
The three roles are nitrogenous waste removal, osmoregulation, and pH and ion regulation.
Question 3
Urea filtered by the urinary system is a nitrogenous waste of protein breakdown in the:
- AStomach
- BPancreas
- CLiver
- DSpleen
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Answer: C
The textbook describes urea as the nitrogenous waste of protein breakdown in the liver.
Question 4
The kidneys help keep blood slightly basic at a pH of about:
- A7.0
- B7.4
- C6.4
- D8.4
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Answer: B
Balancing sodium potassium and hydrogen ions keeps blood slightly basic at around pH 7.4.
Question 5
The human urinary system consists of:
- ATwo kidneys, two ureters, one bladder and one urethra
- BOne kidney, two ureters, one bladder and two urethrae
- CTwo kidneys, one ureter, two bladders and one urethra
- DTwo kidneys, two ureters, two bladders and two urethrae
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Answer: A
The system has two kidneys, two ureters, one urinary bladder and one urethra.
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