MCQ practice · SSC Biology Board questions · Chapter 8: Excretory System
When the kidneys fail-
Think it through first, then pick an option.
- a the amount of nitrogen in the blood will fall
- b the amount of urine will rise
- c creatinine in the blood will rise
- d fever comes with shivering
Answer and explanation
Correct answer: c creatinine in the blood will rise
Creatinine rises in the blood when the kidneys fail.
Why the other options are wrong
- a the amount of nitrogen in the blood will fall: When the kidneys fail wastes pile up, so nitrogen in the blood rises.
- b the amount of urine will rise: The amount of urine falls when the kidneys fail.
- d fever comes with shivering: Fever with shivering is a symptom of a kidney stone.
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