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Excretory Products and their Elimination · Question 40

AIPMT 2010 (Prelims)MCQEasy📈 Topic in 25% papers+4−1
1

The principal nitrogenous excretory compound in humans is synthesised

  1. in kidneys but eliminated mostly through liver
  2. in kidneys as well as eliminated by kidneys
  3. in liver and also eliminated by the same through bile
  4. in the liver, but eliminated mostly through kidneys

Answer

(4) in the liver, but eliminated mostly through kidneys

Solution

Humans are ureotelic; urea is their principal nitrogenous waste.

⇒ As per NCERT, ammonia produced by metabolism is converted into urea in the liver (ornithine cycle) and released into the blood.

⇒ Urea is filtered and eliminated out by the kidneys in urine.

∴ It is synthesised in the liver but eliminated mostly through the kidneys.

Answer: (4)

AIPMT 2010 (Prelims)

Keep practising — Excretory Products and their Elimination

2

What will happen if the stretch receptors of the urinary bladder wall are totally removed?

  1. Micturition will continue
  2. Urine will continue to collect normally in the bladder
  3. There will be no micturition
  4. Urine will not collect in the bladder
AIPMT 2009
3

Uric acid is the chief nitrogenous component of the excretory products of

  1. earthworm
  2. cockroach
  3. frog
  4. man.
AIPMT 2009
4

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
AIPMT 2007
5

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
6

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
7

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
8

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
9

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
10

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
11

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

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