Q. No.The solid linear cytoskeletal elements having a diameter of 6 nm and made up of a single type of monomer are known as :
1. Microtubules
2. Microfilaments
3. Intermediate filaments
4. Lamins
1. Microtubules
2. Microfilaments
3. Intermediate filaments
4. Lamins
The osmotic expansion of a cell kept in water is chiefly regulated by :
1. Mitochondria
2. Vacuoles
3. Plastids
4. Ribosomes
Match the following and select the correct answer :
| (a) | Centriole | (i) | Infoldings in mitochondria |
| (b) | Chlorophyll | (ii) | Thylakoids |
| (c) | Cristae | (iii) | Nucleic acids |
| (d) | Ribozymes | (iv) | Basal body cilia or flagella |
| A | B | C | D | |
| 1. | (iv) | (ii) | (i) | (iii) |
| 2. | (i) | (ii) | (iv) | (iii) |
| 3. | (i) | (iii) | (ii) | (iv) |
| 4. | (iv) | (iii) | (i) | (ii) |
Which of the following are not membrane-bound?
1. Ribosomes
2. Lysosomes
3. Mesosomes
4. Vacuoles
Which of the following structure is not found in a prokaryotic cell?
1.Ribosome
2.Mesosome
3.Plasma membrane
4.Nuclear envelope
The structures that help some bacteria to attach to rocks and/or host tissues are:
| 1. | Fimbriae | 2. | Mesosomes |
| 3. | Holdfast | 4. | Rhizoids |
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
A protoplast is a cell :
1. without nucleus
2. undergoing division
3. without cell wall
4. without plasma membrane
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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