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Excretory Products and their Elimination · Question 43

AIPMT 2007MCQMedium📈 Topic in 0% papers+4−1
1

A person who is on a long hunger strike and is surviving only on water, will have

  1. less amino acids in his urine
  2. more glucose in his blood
  3. less urea in his urine
  4. more sodium in his urine

Answer

(3) less urea in his urine

Solution

Urea is formed in the liver from ammonia released by deamination of amino acids, and is excreted by the kidneys.

A person surviving only on water takes no dietary proteins, so far fewer amino acids are deaminated.

⇒ Less urea is formed in the liver and reaches the kidneys.

∴ His urine will contain less urea.

Blood glucose falls (not rises) during starvation, and sodium is conserved by the kidneys.

Answer: (3)

AIPMT 2007

Keep practising — Excretory Products and their Elimination

2

Angiotensinogen is a protein produced and secreted by

  1. juxtaglomerular (JG) cells
  2. macula densa cells
  3. endothelial cells (cells lining the blood vessels)
  4. liver cells.
AIPMT 2006
3

Earthworms are -

  1. Uricotelic when plenty of water is available
  2. Ammonotelic when plenty of water is available
  3. Ureotelic when plenty of water is available
  4. Uricotelic under conditions of water scarcity
AIPMT 2006
4

In ornithine cycle, which of the following wastes are removed from the blood?

  1. CO2 and urea
  2. Ammonia and urea
  3. CO2 and ammonia
  4. Urea and urine
AIPMT 2005
5

The net pressure gradient that causes the fluid to filter out of the glomeruli into the capsule is

  1. 50 mm Hg
  2. 75 mm Hg
  3. 20 mm Hg
  4. 30 mm Hg
AIPMT 2005
6

A person is undergoing prolonged fasting. His urine will be found to contain abnormal quantities of

  1. fats
  2. amino acids
  3. glucose
  4. ketones.
AIPMT 2005
7

Uricotelism is found in

  1. mammals and birds
  2. fish and fresh water protozoans
  3. birds, land reptiles and insects
  4. frogs and toads
AIPMT 2004
8

If Henle's loop were absent from mammalian nephron, which one of the following is to be expected?

  1. There will be no urine formation.
  2. There will be hardly any change in the quality and quantity of urine formed.
  3. The urine will be more concentrated.
  4. The urine will be more dilute.
AIPMT 2003
9

Conversion of ammonia to urea is done by

  1. ornithine cycle
  2. arginine cycle
  3. fumaric cycle
  4. citrulline cycle
AIPMT 2000
10

Concentration of urine depends upon which organ?

  1. Bowman's capsule
  2. Length of Henle's loop
  3. PCT
  4. Network of capillaries arising from glomerulus
AIPMT 2000
11

Which pair is correct?

  1. Sebum = sexual attraction
  2. Saliva = sense of food taste
  3. Sweat = temperature regulation
  4. Humerus = Hind leg
AIPMT 2000

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