Identify the correct order of organisation of genetic material from largest to smallest:
1. Genome, chromosome, nucleotide, gene
2. Genome, chromosome, gene, nucleotide
3. Chromosome, genome, nucleotide, gene
4. Chromosome, gene, genome, nucleotide
Which one of the following cell organelles is enclosed by a single membrane?
1. | Nuclei | 2. | Mitochondria |
3. | Chloroplasts | 4. | Lysosomes |
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A cell organelle containing hydrolytic enzymes is
1. | mesosome | 2. | lysosome |
3. | microsome | 4. | ribosome |
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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
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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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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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The surface appendage on the bacterial cells that helps in conjugation is:
1. | Flagellum | 2. | Fimbria |
3. | Pilus | 4. | Cilia |
The middle lamella of the cell wall is composed of:
1. | Calcium carbonate | 2. | Calcium phosphate |
3. | Calcium pectate | 4. | Calcium oxalate |
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Both cilium and flagellum emerge from centriole-like structure called the:
1. | Centrosome | 2. | Centromere |
3. | Blepharoplast | 4. | Basal body |
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