Proteinaceous infectious particles causing diseases are | Filo
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Class 11

Biology

Diversity in the Living World

Biological Classification

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Proteinaceous infectious particles causing diseases are

  1. Prions
  2. Viroids
  3. Viruses
  4. Chlamydia
Correct Answer: Option(a)
Solution: a) A prion is an abnormal form of a normally harmless protein found in the brain that is responsible for a variety of fatal neurodegenerative diseases. A prion is a short form of proteinaceous infectious particles. 
b) Viroids are the smallest infectious pathogens which are composed of a single-stranded RNA without a protein coat. 
c) A virus is a small infectious agent composed of genetic material enclosed by a capsid coat. 
d) Chlamydia is a bacterial infection. 
So, the correct answer is 'Prions'.
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