Who first explained that new cells are formed from pre-existing cells

1.  Theodore Schwann

2.  Rudolf Virchow

3.  Matthias Schleiden

4.  Robert Hooke

Subtopic:  Cell Theory |
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Mark the correct statement about centriole.

1. Forms basal body

2. Found in higher plant cells

3. Has ‘9 + 2’ organisation of microtubules

4. Is surrounded by plasma membrane

Subtopic:  Centrosomes |
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Select the wrong statement about eukaryotic cells.

1. They have well defined nucleus

2. Possess 70S ribosomes

3. May have a cell wall

4. No organelles are single membrane bound

Subtopic:  Eukaryotic Cell Architecture: Types | Vacuole |
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Choose the correct option with respect to function of the cell organelles

A

B

C

D

(1) Protein

synthesizes

Citric acid

cycle

enzymes

Protein

processing

Lipid

modification

(2) mRNA

synthesis

ETS

Glyco-

sidation

Protein

processing

(3) Trans-

cription

Anearobic

respiration

Secretion

Sex

hormone

production

(4) rRNA

synthesis

Pyruvate

dehydro-

genase

complex

Protein 

modification

Protein

synthesis

Subtopic:  Mitochondria | Golgi Apparatus | Nucleus | Endomembrane System (Endoplasmic Reticulum) |
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Disc-shaped proteinaceous structure associated with centromere is called

1. Kinetochore

2. Secondary constriction

3. Both Primary and Secondary constriction

4. Nucleolar organizer

Subtopic:  Nucleus: Chromosomes |
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Select the incorrect match

1. Palade particle – Ribosome

2. Flagella – Cell movement

3. Centriole – Found in higher plants

4. Lysosome – Acid hydrolase

Subtopic:  Eukaryotic Cell Architecture: Types |
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The given diagram represents the four different structures which one of these is correct containing material and function:-

 

 

 

 

a.

Nucleolus

NOR

Synthesis of rRNA for formation of 80 S Ribosome

b.

Nuclear Pore

Chromatin

Exchange material between cytoplasm and nucleoplasm

c.

Nucleoplasm Protein

Nucleoplasmin

Formation of nuclear matrix

d.

Nuclear membrane

Ribosome

Cellulose synthesis

1. A

2. B

3. C

4. D

Subtopic:  Nucleus |
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Eukaryotic cells considered as more efficient than prokaryotic cells, due to -

1. compartmentalisation of cytoplasm

2. Infolding of membrane

3. Presence of cell wall

4. Aerobic respiration 

Subtopic:  Eukaryotic Cell Architecture: Types |
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Which of the following cell organelle is absent in prokaryotic cell?

1. Ribosome

2. Lysosome

3. Mitochondria

4. 2 and 3 both 

Subtopic:  Details of Prokaryotic Cell Structure |
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ER, Golgi complex, lysosomes and vacuoles are included in endomembrane system because :-

1. Their function are similar 
2. Their structure are same
3. Their function are co-ordinated
4. Golgi complex, lysosomes and vacuoles are originated from the ER

Subtopic:  Endomembrane System |
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