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Q. No.The smallest living thing capable of an independent existence is:
1. a nucleoprotein
2. a low molecular weight RNA devoid of proteins
3. a cell
4. a cluster of cells
Subtopic: Introduction to Cell |
91%
From NCERT
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Microtubules, microfilaments and intermediate filaments:
| 1. | are ribonucleoproteins. |
| 2. | are part of cytoskeleton in both eukaryotic and prokaryotic cells. |
| 3. | are involved in many functions such as mechanical support, motility, maintenance of the shape of the eukaryotic cell. |
| 4. | are always deposited on cell surface and are never found in the cytoplasm. |
Subtopic: Cytoskeleton | Cilia & Flagella | Microbodies |
83%
From NCERT
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The organelles in a eukaryotic cell that have their own genome are:
1. RER and SER
2. Mitochondria and chloroplasts
3. Plasmids and plastids
4. Nucleus and ribosomes
Subtopic: Plastids | Mitochondria |
91%
From NCERT
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In a prokaryotic cell, phosphate granules, cyanophycean granules and glycogen granules are examples of:
1. inclusion bodies.
2. subunits of ribosomes.
3. enzyme rich locations in cell membrane.
4. products of plasmid genes.
1. inclusion bodies.
2. subunits of ribosomes.
3. enzyme rich locations in cell membrane.
4. products of plasmid genes.
Subtopic: Ribosome and Inclusion Bodies |
97%
From NCERT
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What would be true regarding the names of chromosomes described in the given table?
1. A and B only
2. A and C only
3. C and D only
4. B and D only
| 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 |
91%
From NCERT
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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%
From NCERT
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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%
From NCERT
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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%
From NCERT
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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 |
67%
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