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Excretory Products and their Elimination · Question 51

AIPMT 2000MCQEasy📈 Topic in 25% papers+4−1
1

Conversion of ammonia to urea is done by

  1. ornithine cycle
  2. arginine cycle
  3. fumaric cycle
  4. citrulline cycle

Answer

(1) ornithine cycle

Solution

As per NCERT, in ureotelic animals the ammonia produced by metabolism is converted into urea in the liver.

⇒ This conversion occurs through the ornithine cycle (urea cycle, Krebs–Henseleit cycle), in which ornithine citrulline arginine urea + ornithine.

Answer: (1)

AIPMT 2000

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2

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
3

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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