Take this quiz and see how well you know about Virus ??

A virus consists of: RNA or DNA and a cell membrane. RNA or DNA and a protein coat. RNA and DNA and a protein coat proteins.

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   Author : Agniva Bhowmick

Q1: Which factor may help determine the antigenicity of a virus?

  • A. The size of the virus
  • B. The internal proteins
  • C. Some of the capsomers
  • D. The whole capsid

Q2: Reverse transcriptase is known for having poor proofreading activity. What would be a consequence of this?

  • A. It establishes lifelong infection in the host
  • B. It makes each new viral generation more viable
  • C. It could cause the host cell to incorrectly proofread as well
  • D. It could add to the virulence and transmission of the virus

Q3: An antiviral drug specifically modifies viral receptors on a eukaryotic host cell. How might this affect the viral reproductive cycle?

  • A. It would enhance the process of viral apoptosis
  • B. It would prevent the virus from attaching to the host cell
  • C. It would result in the degeneration of the viral capsid
  • D. It would facilitate the process of viral endocytosis

Q4: What is a hallmark characteristic of reverse transcriptase?

  • A. It allows the virus to infect bacteria through endocytosis
  • B. It is encoded in the host cell’s genome
  • C. It challenges the central dogma of biology (DNA → RNA → Protein)
  • D. It reads the genetic material backwards (3’ → 5’)

Q5: Which central dogma of genetics had to be revisited after the discovery of a retrovirus?

  • A. RNA replication cannot occur prior to translation
  • B. Messenger RNA does not always code for proteins
  • C. DNA makes RNA that makes protein
  • D. Transcriptase assists in the formation of proteins

Q6: Which factor may help determine the antigenicity of a virus?

  • A. The internal proteins
  • B. The whole capsid
  • C. Some of the capsomers
  • D. The size of the virusTake

Q7: What distinguishes prions from viruses?

  • A. Ability to cause infection
  • B. Presence of an envelope
  • C. Type of protein arrangement
  • D. Absence of genetic material

Q8: Oncoviruses are a type of animal virus that can cause a neoplasm - an abnormal, often excessive, growth of tissue. Which type of virus is likely to be an oncovirus?

  • A. Bacteriophage viruses
  • B. Lytic viruses
  • C. Enveloped viruses
  • D. Lysogenic viruses

Q9: A hybridization probe is a fragment of genetic material that is used to to detect the presence of nucleotide sequences. Which infectious agent could not be detected with a probe?

  • A. A prion
  • B. A virus with single-stranded DNA material
  • C. A virus with double-stranded RNA material
  • D. A retrovirus

Q10: A scientist is investigating a specimen in a laboratory. She is attempting to determine whether it is a virus or not. Which of the following would allow her to conclude that it is not a virus?

  • A. The specimen has no organelles
  • B. The specimen has a protein coat
  • C. The specimen is extremely small
  • D. The specimen contains DNA and RNA