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.
Author : Agniva Bhowmick
Posted On : 26-Mar-2020
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 cellâ€™s genome
- C. It challenges the central dogma of biology (DNA â†’ RNA â†’ Protein)
- D. It reads the genetic material backwards (3â€™ â†’ 5â€™)
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