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प्रश्न
Write the characteristics of viruses.
उत्तर
The various characteristics of viruses are:
- They are smaller and simpler than bacteria.
- They are ultramicroscopic and visible only under an electron microscope.
- They are considered to be on the boundary line of living and non-living things.
- They are obligate parasites and cannot live on their own.
- They cannot multiply on their own. They require living machinery to multiply.
- Viruses consist of genetic materials (DNA or RNA) surrounded by a protective coat of protein (capsid).
- Viruses are responsible for causing many dreadful diseases in plants, animals, and humans.
संबंधित प्रश्न
Microorganisms can be seen with the help of a _________.
Rewrite the following statement using correct of the option and explain the completed statement.
Process of -- -- -- -- of milk proteins occurs due to lactic acid.
Match the pairs
| ‘A’ group | ‘B’ group | ||
| a. | Xylitol | 1. | Pigment |
| b. | Citric acid | 2. | To impart sweetness |
| c. | Lycopene | 3. | Microbial restrictor |
| d. | Nycin | 4. | Protein binding emulsifier |
| 5. | To impart acidity | ||
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Use of mutant strains has been increased in industrial microbiology.
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| A | B |
| Fungi | Chlorella |
| Protozoa | Bacteriophage |
| Virus | Candida |
| Algae | Amoeba |
| Bacteria | Prokaryotic |
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