A Microbiology Knowledge Test About Viruses
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Microbiology is a study field of various microorganisms, collectively known as microbes. These can range from various viruses to bacteria, fungi, protozoa, etc. This test is particularly based on viruses and the diseases or syndromes caused by them. So, how much do you know about this field? Take this test and see for yourself!
- 1....................discovered an animal virus causes foot and mouth disease in cattle.
- A.
Ivanovski and Beijerinck
- B.
Loeffler and Frosch
- C.
Pasteur
- 2..........................showed that a disease in tobacco was caused by a virus.
- A.
Ivanovski and Beijerinck
- B.
Loeffler and Frosch
- 3.Viruses range in size from:
- A.
400-1000 nm
- B.
10-100 μm
- C.
400-1000 nm
- D.
20-450 nm
- 4.Smallest viruses are .......... which are around 20 nm in diameter.
- A.
Parvoviruses
- B.
mimiviruses
- 5.Largest viruses are .......... which are around 450 nm in diameter.
- A.
Parvoviruses
- B.
Mimiviruses
- 6.A fully formed virus that is able to establish an infection in a host cell:
- A.
Virion
- B.
Prion
- C.
Bacteriaphage
- 7.Naked viruses consist only of a nucleocapsid
- A.
True
- B.
False
- 8.A common polyhedral capsid shape of viruses is a:
- A.
Icosahedron
- B.
Pentagon
- C.
Helical
- D.
Pyramid
- 9.Which of the following virus is a naked virus and has a helical structure?
- A.
TMV
- B.
Influenza
- C.
Measles
- D.
Rabies
- 10.Which of the following virus is helical and has an enveloped?
- A.
Measles
- B.
Influenza
- C.
Rabies
- D.
All the above
- 11.Which of the following viruses are Icosahedral with an enveloped?
- A.
Hep B
- B.
Herpes virus
- C.
A and B
- D.
None of the above
- 12.The envelope of a virus is derived from the host’s...
- A.
Genome
- B.
Cell membrane, nuclear envelope or endoplasmic reticulum
- C.
Cytoplasm
- D.
Glycoprotein
- 13.Hep B carry
- A.
4 genes
- B.
100 of genes
- 14.Herpes virus carry
- A.
100 genes
- B.
4 genes
- 15.A positive-strand RNA virus:
- A.
Must first be converted to a mRNA before it can be translated.
- B.
Can be used directly to translate viral proteins.
- C.
Is not recognized by host ribosomes.
- D.
Will be degraded by host enzymes.
- 16.A negative sense /strand RNA virus
- A.
Must be converted to positive strand/sense to make mRNA
- B.
Can be used directly to translate viral proteins.
- C.
Must first be converted to a mRNA before it can be translated.
- D.
None of the above
- 17.Enveloped viruses can bud from:
- A.
Nuclear envelope
- B.
Endoplasmic reticulum
- C.
Cell membrane
- D.
All the above
- 18.A virus obtains its envelope during which of the following phases?
- A.
Attachment
- B.
Penetration
- C.
Assembly
- D.
Release
- 19.How long does it take for rubella syndrome to occur?
- A.
First trimester
- B.
Second trimester
- C.
Third trimester
- D.
None of the above
- 20.Blueberry Muffin Syndrome is a rare neonatal skin disorder caused by
- A.
Rubella virus
- B.
Measles
- C.
Mumps
- 21.Centripetal rash appearing initially on the extremities. and spreading to back, torso, and face, but sparing palms, soles, genitalia, and mucous membranes is seen in infection cause by –
- A.
Rubella
- B.
Varicella zoster virus (chicken pox)
- C.
Mumps
- D.
Measles
- 22.Why chicken pox need a double dose?
- A.
Because it’s a live vaccine
- B.
Doesnt need a double dose
- C.
None of the above
- 23.Hep D causes coinfection with Hep B because Hep D alone cant cause the disease
- A.
True
- B.
False
- 24.Which of the following is NOT a cytopathic effect?
- A.
Transformation
- B.
Cell fusion
- C.
Mononucleated cell
- D.
Inclusion bodies
- 25.Which of the following does a virus lack? Select all that apply.
- A.
Ribosomes
- B.
Metabolic processes
- C.
Nucleic acid
- D.
Glycoprotein
- E.
Both A and B
Questions: 45 | Attempts: 23246 | Last updated: Aug 20, 2020
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