Which one of the following is not a constituent of cell membrane ?

1. Cholesterol

2. Glycolipids

3. Proline

4. Phospholipids

Subtopic:  Cell Membrane |
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Lysozyme that is present in perspiration, saliva and tears, destroys:

1. certain fungi

2. certain types of bacteria

3. all viruses

4. most virus-infected cells

Subtopic:  Endomembrane System (Lysosomes) |
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Select the wrong statement from the following:

1. both chloroplasts and mitochondria contain an inner and an outer membrane

2. both chloroplasts and mitochondria have an internal compartment, the thylakoid

space bounded by the thylakoid membrane

3. both chloroplasts and mitochondria contain DNA

4. the chloroplasts are generally much larger than mitochondria

Subtopic:  Plastids | Mitochondria |
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Which of the following statements regarding mitochondrial membrane is not correct?

1. The outer membrane is permeable to all kinds of molecules

2. The enzymes of the electron transfer chain are embedded in the outer membrane

3. The inner membrane is highly convoluted forming a series of infoldings

4. The outer membrane resembles a sieve

Subtopic:  Mitochondria |
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Which of the following statements regarding cilia is not correct ?

1. The organized beating of cilia is controlled by fluxes of Ca2+ across the membrane

2. Cilia are hair-like cellular appendages

3. Microtubules of cilia are composed of tubulin

4. Cilia contain an outer ring of nine doublet microtubules surrounding two single

microtubules

Subtopic:  Cilia & Flagella |
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The organelle common among prokaryotic and eukaryotic cell is

(1) centrosome

(2) ribosome

(3) peroxisome

(4) glyoxysome

Subtopic:  Cell Organisation |
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Which one of the following phenomena is commonly referred as 'cell drinking?

1. Endocytosis

2. Exocytosis

3. Phagocytosis

4. Pinocytosis

Subtopic:  Cell Organisation |
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If a chloroplast of plant is isolated and studied in a test tube the investigation is described

as

1. in vivo

2. in vitro

3. in situ

4. none of these.

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An organelle present in all plant cells but absent from those of animals is

1. Mitochondria

2. peroxisome

3. glyoxysomes

4. Centrioles

Subtopic:  Plastids |
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Primary cell wall consists of a loose network of cellulose microfibrils impregnated with a

matrix of

1. glycoprotein and flavoprotein

2. hemicellulose and flavoprotein

3. hemicellulose and pectin

4. flavoprotein and pectin.

Subtopic:  Cell Wall |
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