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Homeostasis
5 Class 12 Biology questions with answers and explanations.
Printable worksheet with answer key
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The functional unit of the kidney is the:
- 1 Nephron
- 2 Villus
- 3 Neuron
- 4 Alveolus
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Filtration of blood in the nephron takes place in the:
- 1 Collecting duct
- 2 Glomerulus
- 3 Loop of Henle
- 4 Ureter
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Correct answer: Glomerulus
Blood is filtered under pressure into Bowman's capsule.
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ADH makes the kidney:
- 1 Stop filtering
- 2 Reabsorb more water
- 3 Lose more water
- 4 Produce more urea
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Correct answer: Reabsorb more water
Antidiuretic hormone increases water reabsorption in the collecting duct.
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Thermoregulation in humans is controlled by the:
- 1 Cerebellum
- 2 Hypothalamus
- 3 Medulla only
- 4 Pituitary only
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Correct answer: Hypothalamus
The hypothalamus acts as the body's thermostat.
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Nitrogenous waste of humans is mainly:
- 1 Creatinine only
- 2 Ammonia
- 3 Uric acid
- 4 Urea