The solid linear cytoskeletal elements having a diameter of 6nm and made up of a single

type of monomer are known as

1. microtubules

2. microfilaments

3. intermediate filaments

4. lamins

Subtopic:  Cytoskeleton |
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The osmotic expansion of a cell kept in water is chiefly regulated by

1. mitochondria

2. vacuoles

3. plastids

4. ribosomes

Subtopic:  Vacuole |
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The motile bacteria are able to move by

1. fimbriae

2. flagella

3. cilia

4. pili

Subtopic:  Cilia & Flagella |
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A major site for synthesis of lipids is

1. RER

2. SER

3. symplast

4. nucleoplasm

Subtopic:  Endomembrane System (Endoplasmic Reticulum) |
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The Golgi complex plays a major role:

(1) in trapping the light and transforming it into chemical energy

(2) in digesting proteins and carbohydrates

(3) as energy transferring organelles

(4) in post translational modification of proteins and glycosidation of lipids

Subtopic:  Golgi Apparatus |
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Ribosomal RNA is actively synthesized in

1. lysosomes

2. nucleolus

3. nucleoplasm

4. ribosomes

Subtopic:  Nucleus |
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What is true about ribosomes?

1. The prokaryotic ribosomes are 80 S, where S stands for sedimentation coefficient

2. These are composed of ribonucleic acid and proteins

3. These are found only in eukaryotic cells

4. These are self-splicing introns of some RNAs

 

Subtopic:  Ribosome and Inclusion Bodies |
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Select the correct statement from the following regarding cell membrane.

1. Na+ and K ions move across cell membrane by passive transport

2. Proteins make up 60 to 70% of the cell membrane

3. Lipids are arranged in a bilayer with polar heads towards the inner part

4. Fluid mosaic model of cell membrane was proposed by Singer and Nicolson

Subtopic:  Cell Membrane |
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Important site for formation of glycoproteins and glycolipids is

1. Golgi apparatus

2. plastid

3. Lysosome

4. vacuole

Subtopic:  Golgi Apparatus |
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Which one of the following also act as a ribozyme in a bacterial cell?

1. snRNA

2. hn RNA

3. 23 S rRNA

4. 5 S rRNA

Subtopic:  Ribosome and Inclusion Bodies |
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