- 1(current)
Q. No.Select the wrong statement:
| 1. | The viroids were discovered by D.J lvanovsky. |
| 2. | W.M. Stanley showed that viruses could be crystallized. |
| 3. | The term 'contagium vivum fluidum' was coined by MW Beijerinck. |
| 4. | Mosaic disease in tobacco and AIDS in human beings are caused by viruses. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following shows coiled RNA strand and capsomeres?
| 1. | Poliovirus | 2. | Tobacco mosaic virus |
| 3. | Measles virus | 4. | Retrovirus |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyViruses have:
1. DNA enclosed in a protein coat
2. Prokaryotic nucleus
3. Single chromosome
4. Both DNA and RNA
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich statement is wrong for viruses?
1. All are parasites
2. All of them have helical symmetry
3. They have the ability to synthesize nucleic acids and proteins
4. Antibiotics have no effect on them
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyVirus envelope is known as:
1. capsid
2. virion
3. nucleoprotein
4. core
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyInfectious proteins are present in:
1. geminiviruses
2. prions
3. viroids
4. satellite viruses
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyGiven below is the diagram of a bacteriophage. In which one of the options, all the four parts A, B, C and D are correct?
| A | B | C | D | |
| 1. | Sheath | Collar | Head | Tail fibres |
| 2. | Head | Sheath | Collar | Tail fibres |
| 3. | Collar | Tail fibres | Head | Sheath |
| 4. | Tail fibres | Head | Sheath | Collar |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyT.O. Diener discovered a:
1. free infectious RNA
2. free infectious DNA
3. infectious protein
4. bacteriophage
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe causative agent of mad-cow disease is a:
1. bacterium
2. prion
3. worm
4. virus
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology- 1(current)
Q. No.
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