Q. No.Who first explained that new cells are formed from pre-existing cells
1.
Theodor Schwann
2. Rudolf Virchow
3. Matthias Schleiden
4. Robert Hooke
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 |
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 |
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 |
Disc-shaped proteinaceous structure associated with centromere is called
| 1. | Kinetochore |
| 2. | Secondary constriction |
| 3. | Both Primary and Secondary constriction |
| 4. | Nucleolar organizer |
Select the incorrect match
1. Palade particle – Ribosome
2. Flagella – Cell movement
3. Centriole – Found in higher plants
4. Lysosome – Acid hydrolase
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
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 |
Which of the following cell organelle is absent in prokaryotic cell?
1. Ribosome
2. Lysosome
3. Mitochondria
4. 2 and 3 both
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 |
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