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

1.  Theodor Schwann

2. Rudolf Virchow

3. Matthias Schleiden

4. Robert Hooke

Subtopic:  Cell Theory |
 93%
From NCERT
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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 |
 63%
From NCERT
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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 |
 63%
From NCERT
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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
Anaerobic
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) |
 59%
From NCERT
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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 |
 95%
From NCERT
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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 |
 79%
From NCERT
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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 |
 55%
From NCERT
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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 |
 81%
From NCERT
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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 |
 86%
From NCERT
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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 |
 91%
From NCERT
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