Class XI

Homeostasis in the body is largely maintained by :
  1. osmoregulation, excretion and egestion
  2. excretion and osmoregulation
  3. egestion and osmoregulation
  4. excretion and egestion
Match the kidney disorders and its symptoms : column A a) Ketosis b) Polydipsia c) Alkaptonuria d) Haematuria column B i) frequent thirst ii) blood in urine iii) acetoacetic acid in urine iv) homogentisic acid in urine
  1. a)-iii, b)-ii, c)-iv, d)-i
  2. a)-iv, b)-ii, c)-iv, d)-i
  3. a)-iv, b)-i, c)-iii, d)-ii
  4. a)-iii, b)-i, c)-iv, d)-ii
The filtration fraction is the ratio of GFR to RPF where both the values are in ml/min and FF is expressed in percentage. Calculate FF for a normal adult human being, if RPF= 600ml/min :
  1. 2.08%
  2. 20.83%
  3. 10.38%
  4. 20.73%
Read the following : i. Avian kidneys have very short loops of Henle. ii. Birds are unable to make urine as hypotonic as mammals can.
  1. both are wrong
  2. Statement ii) is correct and i) is wrong.
  3. Statement ii) is wrong and i) is correct.
  4. both are correct
Urea cycle operates in :
  1. Liver
  2. Lungs
  3. skin cells
  4. sweat glands and sebaceous glands
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