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Q. No.The main arena of various types of activities of a cell is:
1.
Plasma membrane
2.
Mitochondria
3.
Cytoplasm
4.
Nucleus
Subtopic: Cell Organisation |
90%
Level 1: 80%+
AIPMT - 2010
Hints
The plasma membrane consists mainly of:
| 1. | phospholipids embedded in a protein bilayer |
| 2. | proteins embedded in a phospholipid bilayer |
| 3. | proteins embedded in a polymer of glucose molecules |
| 4. | proteins embedded in a carbohydrate bilayer |
Subtopic: Cell Membrane |
83%
Level 1: 80%+
AIPMT - 2010
Hints
Alage have cell wall made up of:
| 1. | Cellulose, galactans and mannans |
| 2. | Hemicellulose, pectins and proteins |
| 3. | Pectins, cellulose and proteins |
| 4. | Cellulose, hemicellulose and pectins |
Subtopic: Cell Wall |
83%
Level 1: 80%+
AIPMT - 2010
Hints
Middle lamella is mainly composed of:
1. hemicellulose
2. muramic acid
3. calcium pectate
4. phosphoglycerides
Subtopic: Cell Wall |
92%
Level 1: 80%+
AIPMT - 2009
Hints
Plasmodesmata are:
| 1. | lignified cemented layers between cells |
| 2. | locomotory structures |
| 3. | membranes connecting the nucleus with plasmalemma |
| 4. | connections between adjacent cells |
Subtopic: Cell Wall |
82%
Level 1: 80%+
AIPMT - 2009
Hints
The cytoskeleton is made up of:
| 1. | calcium carbonate granules |
| 2. | callose deposits |
| 3. | cellulosic microfibrils |
| 4. | proteinaceous filaments |
Subtopic: Cytoskeleton |
78%
Level 2: 60%+
AIPMT - 2009
Hints
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 flip-flop movement)?
| 1. | Both lipids and proteins can flip-flop |
| 2. | While lipids can rarely flip-flop, proteins cannot |
| 3. | While proteins can flip-flop, lipids cannot |
| 4. | Neither lipids nor proteins can flip-flop |
Subtopic: Evidence for Fluidic Nature of Membrane |
61%
Level 2: 60%+
AIPMT - 2008
Hints
Polysome is formed by:
| 1. | several ribosomes attached to a single mRNA |
| 2. | many ribosomes attached to a strand of endoplasmic reticulum |
| 3. | a ribosome with several subunits |
| 4. | ribosomes attached in a linear arrangement |
Subtopic: Ribosome and Inclusion Bodies |
90%
Level 1: 80%+
AIPMT - 2008
Hints
The two subunits of ribosome remain united at a critical ion level of:
1. copper
2. manganese
3. magnesium
4. calcium
1. copper
2. manganese
3. magnesium
4. calcium
Subtopic: Ribosome and Inclusion Bodies |
64%
Level 2: 60%+
AIPMT - 2008
Hints
Vacuole in a plant cell:
| 1. | is membrane-bound and contains storage proteins and lipids |
| 2. | is membrane-bound and contains water and excretory substances |
| 3. | lacks membrane and contains air |
| 4. | lacks membrane and contains water and excretory substances |
Subtopic: Vacuole |
86%
Level 1: 80%+
AIPMT - 2008
Hints
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