Q. No.Ribosomes are non-membrane bound organelles found in:
1. All prokaryotic cells only
2. All eukaryotic cells only
3. All somatic cells in eukaryotic organisms only
4. All cells
1. All prokaryotic cells only
2. All eukaryotic cells only
3. All somatic cells in eukaryotic organisms only
4. All cells
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A non-membrane bound organelle found in animal cells that helps in cell division would be:
| 1. | Centromere | 2. | Centrosome |
| 3. | Basal body | 4. | Fimbriae |
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The genomic DNA of a bacterial cell is:
1. circular and located on a single chromosome
2. circular and located on multiple chromosomes
3. linear and located on a single chromosome
4. linear and located on multiple chromosomes
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Extra-chromosomal circular double stranded and autonomously replicating DNA found in many bacteria is known as:
| 1. | Plastid | 2. | Genophore |
| 3. | Plasmid | 4. | Genome |
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A ‘slime layer’ or a ‘capsule’ is a modification of which of the following layers of the cell envelope of a prokaryotic cell?
| 1. | Glycocalyx | 2. | Cell wall |
| 3. | Lipoprotein layer | 4. | Cell membrane |
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Mesosomes, extensions of plasma membrane in bacterial cells, help in all the following except:
1. Cell wall formation
2. DNA replication and distribution to daughter cells
3. Respiration
4. Photosynthesis
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A basal body is a part of bacterial:
| 1. | Inclusion bodies | 2. | Chromosomal DNA |
| 3. | Flagellum | 4. | Plasmid |
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The surface appendage on the bacterial cells that helps in conjugation is:
| 1. | Flagellum | 2. | Fimbria |
| 3. | Pilus | 4. | Cilia |
Identify the incorrect statement regarding bacterial ribosomes:
1. They are associated with plasma membrane
2. They are 70 S with two subunits being 30 S and 40 S
3. Several ribosomes may attach to a single mRNA
4. They translate the mRNA into proteins
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