Which one of the following structures between two adjacent cells is an effective transport

pathway?

1. Plasmodesmata

2. Plastoquinones

3. Endoplasmic rcticulum

4. Plasmalemma

Subtopic:  Cell Wall |
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Which one of the following has its own DNA?

1. Mitochondria

2. Dictyosome

3. Lysosome

4. Peroxisome

Subtopic:  Mitochondria |
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The main arena of various types of activities of a cell is

1. plasma membrane

2. mitochondrion

3. cytoplasm

4. nucleus

Subtopic:  Cell Organisation |
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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 |
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Stroma in the chloroplasts of higher plants contains

1. light-independent reaction enzymes

2. light-dependent reaction enzymes

3. ribosomes

4. chlorophyll

Subtopic:  Plastids |
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Middle lamella is mainly composed of

1. hemicellulose

2. muramic acid

3. calcium pectate

4. phosphoglycerides

Subtopic:  Cell Wall |
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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 |
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Cytoskeleton is made up of

1. calcium carbonate granules

2. callose deposits

3. cellulosic microfibrils

4. proteinaceous filaments

Subtopic:  Cytoskeleton |
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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

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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 to each other in a linear arrangement

Subtopic:  Ribosome and Inclusion Bodies |
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