Membrane-bound organelles are absent in:

1. Saccharomyces

2. Streptococcus

3. Chlamydomonas

4. Plasmodium

Subtopic:  Prokaryotic Cell Organisation |
 64%
Level 2: 60%+
AIPMT - 2010
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Which one of the following has its own DNA?
1. Mitochondria
2. Dictyosome
3. Lysosome
4. Peroxisome

Subtopic:  Mitochondria |
 95%
Level 1: 80%+
AIPMT - 2010
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The main arena of various types of activities of a cell is:

1. Plasma membrane 2. Mitochondria
3. Cytoplasm 4. Nucleus
Subtopic:  Cell Organisation |
 91%
Level 1: 80%+
AIPMT - 2010
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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
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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
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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
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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
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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
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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
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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
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