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Q. No.What would be true regarding the names of chromosomes described in the given table?
I:
Centromere placement very close to the top, p arms not visible
II:
q arms are much longer than the p arms.
III:
p and q arms are very close in length but not equal.
IV:
p and q arms are equal in length.
A:
I is Acrocentric and II is Telocentric
B:
III is Metacentric and IV is Sub-metacentric
C:
I is Telocentroic and II is Acrocentric
D:
III is sub-metacentric and IV is Metacentric
1. A and B only
2. A and C only
3. C and D only
4. B and D only
Subtopic: Nucleus: Chromosomes |
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Identify the incorrectly matched pair:
| Structure | Size range | |
| 1. | Perinuclear space | 10 – 50 nm |
| 2. | Length of chloroplasts | 2 – 5 µm |
| 3. | Typical eukaryotic cell | 10 – 20 µm |
| 4. | Typical bacterium | 1 – 2 µm |
Subtopic: Plastids |
60%
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Consider the given two statements:
| Assertion (A): | The Golgi apparatus remains in close association with the endoplasmic reticulum. |
| Reason (R): | The cis and the trans faces of the organelle are entirely different, but interconnected. |
| 1. | Both (A) and (R) are True but the (R) does not explain (A). |
| 2. | (A) is True but (R) is False. |
| 3. | Both (A) and (R) are True and (R) correctly explains (A). |
| 4. | (A) is False but (R) is True. |
Subtopic: Golgi Apparatus |
86%
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In some prokaryotes like cyanobacteria, there are membranous extensions into the cytoplasm which contain pigments and are called:
1. Mesosomes
2. Gas vacuoles
3. Inclusion bodies
4. Chromatophores
1. Mesosomes
2. Gas vacuoles
3. Inclusion bodies
4. Chromatophores
Subtopic: Details of Prokaryotic Cell Structure | Cell Wall |
84%
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The plasmid DNA in certain bacteria:
1. Only I is incorrect
2. Only II is incorrect
3. Both I and II are correct
4. Both I and II are incorrect
| I: | is a small circular DNA and an integral part of the genomic DNA. |
| II: | confers certain unique phenotypic characters to such bacteria and one such character is resistance to antibiotics. |
2. Only II is incorrect
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Prokaryotic Cell Organisation | Details of Prokaryotic Cell Structure |
From NCERT
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Which of the following statement about cilia is not correct?
| 1. | Organised beating of cilia is controlled by fluxes of Ca2+ across the membrane. |
| 2. | Cilia are hair like cellular appendages. |
| 3. | Cilia contain an outer ring of nine doublet microtubules surrounding two singlet microtubules. |
| 4. | Microtubules of cilia are composed of tubulin. |
Subtopic: Cilia & Flagella |
68%
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The famous aphorism ‘omniscellula-e-cellula’ was added to the cell theory in 1855 by
| 1. | Matthias Shcleiden | 2. | Theodore Schwann |
| 3. | J. B. S. Haldane | 4. | Rudolph Virchow |
Subtopic: Introduction to Cell |
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Which German botanist examined a large number of plants and observed that all plants are composed of different kinds of cells which form the tissues of the plant?
1. Theodore Schwann
2. Rudolf Virchow
3. Jan Evangelista Purkyně
4. Matthias Schleiden
1. Theodore Schwann
2. Rudolf Virchow
3. Jan Evangelista Purkyně
4. Matthias Schleiden
Subtopic: Cell Theory |
88%
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“Omnis cellula-e cellula” means:
1. all cells have a cell membrane
2. only cells are capable of living existence
3. all cells come from cells
4. all cells are capable of dividing
1. all cells have a cell membrane
2. only cells are capable of living existence
3. all cells come from cells
4. all cells are capable of dividing
Subtopic: Cell Theory |
89%
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If we compare a typical eukaryotic cell with a typical bacterial cell, it is expected that the size of eukaryotic cell is generally larger than a prokaryotic cell by a factor of:
1. 2
2. 5
3. 10
4. 100
1. 2
2. 5
3. 10
4. 100
Subtopic: Prokaryotic Cell Organisation | Eukaryotic Cell Architecture: Types |
66%
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