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Q. No.Regarding the genetic material in prokaryotes:
I:
The main chromosomal DNA is linear
II:
Plasmid DNA is circular
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Details of Prokaryotic Cell Structure |
66%
Level 2: 60%+
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Mesosome in bacterial cells is not involved in:
1. cell wall formation
2. DNA replication and distribution to daughter cell
3. respiration
4. photosynthesis
1. cell wall formation
2. DNA replication and distribution to daughter cell
3. respiration
4. photosynthesis
Subtopic: Prokaryotic Cell Organisation |
83%
Level 1: 80%+
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Regarding prokaryotes:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | All prokaryotes have a cell wall surrounding the cell membrane except in mycoplasma. |
| II: | All prokaryotes have a cell membrane except in mycoplasma. |
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Details of Prokaryotic Cell Structure |
75%
Level 2: 60%+
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Resistance to an antibiotic is the character conferred to bacterial cell by:
| 1. | Peptidoglycan cell wall | 2. | Main chromosomal DNA |
| 3. | Plasmid DNA | 4. | Satellite DNA |
Subtopic: Prokaryotic Cell Organisation |
86%
Level 1: 80%+
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Bacterial cells, if motile, will move with the help of:
| 1. | Cilia | 2. | Flagella |
| 3. | Myocytes | 4. | Pseudopodia |
Subtopic: Details of Prokaryotic Cell Structure |
90%
Level 1: 80%+
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Consider the two statements:
| Statement I: | Besides flagella, Pili and Fimbriae are also surface structures of the bacteria but do not play a role in motility. |
| Statement II: | Pili and fimbriae help attach the bacteria to rocks in streams and also to the host tissues. |
| 1. | Statement I is correct; Statement II is correct |
| 2. | Statement I is correct; Statement II is incorrect |
| 3. | Statement I is incorrect; Statement II is correct |
| 4. | Statement I is incorrect; Statement II is incorrect |
Subtopic: Details of Prokaryotic Cell Structure |
Level 3: 35%-60%
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The correct description of prokaryotic ribosomes will be:
| 1. | They are about 15 nm by 20 nm in size and are made of two subunits - 50S and 30S units which when present together form 70S prokaryotic ribosomes. |
| 2. | They are about 15 nm by 20 nm in size and are made of two subunits - 40S and 30S units which when present together form 70S prokaryotic ribosomes. |
| 3. | They are about 20 nm by 25 nm in size and are made of two subunits - 60S and 40S units which when present together form 80S prokaryotic ribosomes. |
| 4. | They are about 25 nm by 50 nm in size and are made of two subunits - 50S and 20S units which when present together form 70S prokaryotic ribosomes. |
Subtopic: Details of Prokaryotic Cell Structure |
92%
Level 1: 80%+
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Ribosomes are the site of protein synthesis. Identify the correct statement:
| I: | Several ribosomes may attach to a single mRNA and form a chain called polyribosomes or polysome. |
| II: | The ribosomes of a polysome translate the mRNA into different proteins. |
| 1. | Only I | 2. | Only II |
| 3. | Both I and II | 4. | Neither I nor II |
Subtopic: Ribosome and Inclusion Bodies |
Level 4: Below 35%
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Reserve material in prokaryotic cells is stored in the cytoplasm in the form of:
| 1. | inclusion bodies | 2. | carboxysomes |
| 3. | magnetosomes | 4. | chromatophores |
Subtopic: Ribosome and Inclusion Bodies |
94%
Level 1: 80%+
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Consider the given two statements:
| Assertion (A): | In eukaryotic cells, there is an extensive compartmentalisation of cytoplasm. |
| Reason (R): | Eukaryotic cells possess an organised nucleus with a nuclear envelope. |
| 1. | Both (A) and (R) are True and (R) correctly explains the (A). |
| 2. | Both (A) and (R) are True but (R) does not correctly explain the(A). |
| 3. | (A) is True; (R) is False |
| 4. | Both (A) and (R) are False |
Subtopic: Eukaryotic Cell Orgenelle |
68%
Level 2: 60%+
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