_ are amongst smallest known virus.
Correct answer: B. Parvoviruses
- A. Picornavirus
- B. Parvoviruses
- C. Herpes virus
- D. Rotavirus
Explanation
Option B is correct since parvoviruses are the smallest icosahedral particles about 18-26 nm in diameter. Option A is incorrect since picornaviruses are larger than parvoviruses with a diameter of 22-30nm. Option C is incorrect since the herpesviral is a large family of double-stranded and DNA viruses that are larger than both parvoviruses and picornaviruses with a diameter of about 120-260nm. Option D is incorrect since rotaviruses are larger than both parvovirus and picornaviruses with a diameter of about 70 nm when a double-layered capsid is present and 55 nm when this capsid is absent.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Viruses
Viruses are acellular infectious particles made of genetic material enclosed by a protein capsid, sometimes with a lipid envelope. Their replication depends on a host cell and may follow lytic or lysogenic cycles, so viral structure and reproduction differ fundamentally from those of cellular organisms such as bacteria.
Practise Acellular Life
342 free Acellular Life MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Viruses questions
In icosahedral virus the capsomeres are arranged in _ triangles.
Which of the following virus is enveloped?
A defective virus that needs the unrelated help of virus to infect the same host cell in order to provide essential functions:
The average diameter of large viruses is approximately equal to:
What is the shape of the TMV Virus?
Virus attachment requires energy?