81.
A terrestrial animal must be able to
A
excrete large amounts of water in urine
B
conserve water
C
actively pump salts out through the skin
D
excrete large amounts of salts in urine
Answer :
conserve water
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82.
The two kidneys lie in man
A
At the level of ovaries
B
At the same level
C
Left kidney at a higher level than the right one
D
Right kidney at a higher level than the left one
Answer :
Left kidney at a higher level than the right one
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83.
Excretion in the form of uric acid and urates in birds is helpful in
A
Conserving body heat
B
Elimination excess water
C
Conserving body water
D
Eliminating body water
Answer :
Conserving body water
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84.
What for the ascentding limb of Loop of Henle is permeable? MP PMT 1997, JIPMER
A
Glucose
B
NH3
C
Na+
D
Water
Answer :
Na+
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85.
Which of the following is concerned with the formation of urea in rabbit
A
Blood
B
Kidney
C
Spleen
D
Liver
Answer :
Liver
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86.
Henle's loop is located in
A
Cortex
B
Medulla
C
Pelvis
D
Renal Colums
Answer :
Medulla
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87.
The presence of arginase confirms that
A
Urea cycle is operating
B
Urea cycle may be operating
C
Arginine is being converted into ornithine
D
Arginine is being converted into citrulline
Answer :
Arginine is being converted into ornithine
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88.
The efferent and efferent vessels are
A
Arterial in nature
B
Venous in nature
C
One is arterial and the other is venous
D
None of the above
Answer :
Arterial in nature
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89.
Human urine is usually acidic because :
A
excreted plasma proteins are acidic
B
potassium and sodium exchange generates acidity
C
hydrogen ions are actively secreted into the filtrate
D
the sodium transporter exchanges one hydrogen ion for each sodium ion, in peritubular capillaries
Answer :
hydrogen ions are actively secreted into the filtrate
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90.
In Hydra waste material of food digestion and nitrogenous waste material removed from
A
mouth and body wall
B
mouth and tentacles
C
mouth and nematocyst
D
body wall and tentacles
Answer :
mouth and body wall
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