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प्रश्न
How are viroids different from viruses?
थोडक्यात उत्तर
फरक स्पष्ट करा
उत्तर १
Viroids are the smallest known agent of infectious diseases that contain small single-stranded RNA molecule. They lack capsid and have no proteins associated with them. Viroids infect only plants. Whereas, viruses have genetic material surrounded by a protective coat of protein or lipoprotein. The genetic material of viruses are of 4 types – double-stranded DNA, double-stranded RNA, single-stranded DNA, single-stranded RNA. They infect both plants and animals.
shaalaa.com
उत्तर २
| Virus | Viroid | |
| 1. | It is made up of nucleoproteins. | It is made of RNA (ribonucleic acid). |
| 2. | It may contain nucleic acids such as DNA and RNA. | Only DNA is found in it. |
| 3. | A protein shell is found. | The protein shell is absent. |
| 4. | Its size is large. | Its size is small. |
| 5. | Viruses can infect all living organisms. | These infect only plants. |
shaalaa.com
Viroids
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