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Question
Nucleic acid is absent in __________.
Nucleic acid is absent in __________.
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Solution
The correct option is C Prion
- Viruses are acellular and are composed of rigid protein shell (capsid) surrounding nucleic acid (ss or ds RNA or DNA).
- Viroids are the smaller infectious pathogens that consist of only nucleic acid and no protein coat. Thus, a virus without its protein coat is termed a viroid.
- Prions are the proteinaceous infectious particles that consist of only protein particles, but no genetic material (nucleic acid), capable of causing neurodegenerative diseases.
- Mycoplasmas are the smallest prokaryotic organisms that have sterols and lipoglycan rich rigid plasma membrane and genetic material.
Thus, the correct answer is option C.
- Viruses are acellular and are composed of rigid protein shell (capsid) surrounding nucleic acid (ss or ds RNA or DNA).
- Viroids are the smaller infectious pathogens that consist of only nucleic acid and no protein coat. Thus, a virus without its protein coat is termed a viroid.
- Prions are the proteinaceous infectious particles that consist of only protein particles, but no genetic material (nucleic acid), capable of causing neurodegenerative diseases.
- Mycoplasmas are the smallest prokaryotic organisms that have sterols and lipoglycan rich rigid plasma membrane and genetic material.
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