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Biological Classification question

2019 · Q77
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Biological Classification question

2019 · Q77

NEETBiologyBiological ClassificationMCQ+4 / −1
Which of the following statements is incorrect?
  1. A
    Infective constituent in viruses is the protein coat
  2. B
    Prions consist of abnormally folded proteins
  3. C
    Viroids lack a protein coat
  4. D
    Viruses are obligate parasites
View written solutionFree

Correct answer: A

Virus : Viruses are obligate parasites. In addition to proteins, viruses also contain genetic material that could be either RNA or DNA. No virus contains both RNA and DNA. A virus is a nucleoprotein and the genetic material is infectious.

Viroids: It lacks the protein coat that is found in viruses and hence, the name viroid.

Prions: In modern medicine, certain infectious neurological diseases were found to be transmitted by an agent consisted of abnormally folded protein.

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