Q. No.The function of telomeres in the nucleus:
1. Pole ward movement
2. To initiate the RNA synthesis
3. To seal the ends of chromosome
4. To recognize the homologous chromosome
In the fluid mosaic model of a plasma membrane:
| 1. | Upper layer is non-polar and hydrophilic |
| 2. | The polar layer is hydrophobic |
| 3. | Phospholipids form a bimolecular layer in the middle part |
| 4. | Proteins form a middle layer |
Which of the following occurs more than one and less than five in a chromosome:
1. Chromatid
2. Chromomere
3. Centromere
4. Telomere
The mitotic spindle is mainly composed of which protein:
1. Actin
2. Tubulin
3. Actomyosin
4. Myoglobin
Which of the following ribosomes are engaged in protein synthesis in the animal cell:
| 1. | Ribosomes that occur on the nuclear membrane and E.R. |
| 2. | Ribosomes of only cytosol |
| 3. | Ribosomes of only nucleolus and cytosol |
| 4. | Ribosomes of only mitochondria and cytosol |
Extranuclear DNA is found in:
1. Lysosome and chloroplast
2. Chloroplast and mitochondria
3. Mitochondria and lysosome
4. Golgi and E.R.
Lysosome contains:
| 1. Oxidative enzymes | 2. Hydrolytic enzymes |
| 3. Reductive enzymes | 4. Anabolic enzymes |
Chromosomes in a bacterial cell can be 1–3 in number and:
| 1. | Are always circular |
| 2. | Are always linear |
| 3. | Can be either circular or linear, but never both within the same cell |
| 4. | Can be circular as well as linear within the same cell |
The difference in gram ⊕ and gram bacteria is due to:
1. Cell wall
2. Cell membrane
3. Ribosome
4. Cytoplasm
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