1
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
The two sub-units of ribosome remain united at a critical ion level of :
A
magnesium
B
manganese
C
calcium
D
copper
2
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
Vacuole in a plant cell:
A
is membrane-bound and contains storage proteins and lipids
B
is membrane-bound and contains water and excretory substances
C
lacks membrane and contains air
D
Lacks membrane and contains water and excretory substances
3
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
Keeping in view the "fluid mosaic model" for the structure of cell membrane, which one of the following statements is correct with respect to the movement of lipids and proteins from one lipid monolayer to the other (described as flipflop movement)?
A
Both lipids and proteins can flip-flop
B
While lipids can rarely flip-flop proteins cannot
C
While proteins can flip-flop, lipids cannot
D
neither lipids, nor proteins can flip-flop
4
AIPMT 2007
MCQ (Single Correct Answer)
+4
-1
Which one of the following is not a constituent of cell membrane ?
A
Glycolipids
B
Proline
C
Phospholipids
D
Cholesterol
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