About Virus

Following are some of the multiple choice questions on the Virus with answers that will help the students in developing their knowledge.

Virus MCQ

1. Viruses are non-living because

  • they cannot reproduce on their own
  • they do not evolve
  • they have no DNA
  • they cannot be destroyed

2. What happens in the lysogenic cycle?

  • Virus goes in and leaves the host cell
  • Virus quickly kills the host cell
  • Virus inject the nucleic acid into the host cell, and the nucleic acid integrates into the host cell DNA, and stay dormant for a long time
  • Bacteria injects DNA into a host cell

3. The organism that a virus enters and uses is called a

  • host
  • parasite
  • guest
  • brujeria

4. A tiny non-living particle that invades and then multiplies inside of a living cell is called a:

  • vaccine
  • virus
  • bacteriophage
  • All of above

5. Viruses are cells.

  • True 
  • False

6. What was used to make the smallpox vaccine?

  • Cowpox
  • Chickenpox
  • Penicillin
  • Bacteria from soil

7. The smallest and simpliest forms of life are called

  • bacteria
  • virus
  • fungi
  • protozoa

8. What are the parts of a virus?

  • inner core and protein coat
  • left and right ventricles
  • inner and outer core
  • none of the above

9. A virus is __________ a cell.

  • bigger than
  • smaller than
  • the same size as
  • another word for

10. What does a virus have on the inside?

  • DNA, but never RNA
  • RNA but never DNA
  • DNA or RNA
  • neither DNA or RNA

11. An organism that lives in or on another is called a

  • parasite
  • paramedic
  • pasadena
  • pair of dice

12. A virus invades and reproduces inside a living...

  • bacteria
  • DNA
  • animal
  • cell

13. What does a virus have on the outside?

  • a protein coat
  • a fur coat
  • crispy skin
  • membrane

14. Is a virus alive?

  • Yes
  • Sure is
  • Most Def'
  • Naw, son...

15. One reason that viruses are considered to be nonliving is that they are not made of ______.

  • protein
  • viruses
  • bacteria
  • cells

16. How could you describe the size of a virus?

  • Smaller than bacteria
  • Larger than a parasite
  • About the size of a dime
  • Smaller than a proton

17. Antibiotics kill viruses

  • True
  • False

18. What do viruses have in common with living cells? They both...

  • store genetic information
  • have chloroplasts
  • use glucose for cellular respiration
  • have endoplasmic reticulum

19. Which of the following occurs after a virus attaches to a host cell in the viral reproduction process?

  • The host cell dies
  • The virus dies
  • The virus inserts its genetic information into the host cell
  • copies of the virus are immediately released from the host

20. What provides direct energy for the virus?

  • food
  • its host
  • the sun
  • a parasite

21. Which country has the most corona virus cases in the world?

  • Germany
  • America
  • Spain
  • Italy

22. Which country has the most people died by corona virus?

  • Spain
  • China
  • America
  • Italy

23. How many corona virus cases are there in the world up to April 6th?

  • Over 1 million
  • Under 1 million
  • Over 1 billion
  • Under 1 billion

24. How many people in the world were killed by covid up to April 6th?

  • Over 50.000
  • Over 70.000
  • Over 60000
  • Over 40.000

25. How many people in Vietnam are recovered from covid up to April 6th?

  • 100
  • 200
  • 80
  • 95

26. How many poeple died by covid in Vietnam?

  • 1
  • 2
  • 3
  • 0

27. How many coronavirus cases were there in Vietnam on April 6th?

  • 245
  • Over 100
  • Under 100
  • 237

28. What should we do to prevent covid-19?

  • Drink warm water
  • Eat healthy food
  • Wash hands
  • All of above

29. What can we do to prevent Covid-19?

  • Stay home
  • Go out
  • Shake hands
  • Visit coronavirus people

30. Which of these is caused by a virus?

  • the common cold
  • chicken pox
  • strep throat
  • two of these

31. Viruses attach only to a particular host because of the presence of

  • DNA
  • magnetic attraction
  • surface receptors
  • other viruses

32. A virus in the lysogenic state can be forced into the lytic cycle by

  • exposure to UV light
  • exposure to certain chemicals
  • a change in temperature or pH
  • all of these

33. Choose the correct order of lytic cycle steps

  • attachment, injection, assembly, synthesis, lysis
  • attachment, injection, synthesis, assembly, lysis
  • attachment, injection, assembly, lysis, synthesis
  • attachment, lysis, assembly, synthesis, injection

34. Which cycle of a virus is most destructive to the host?

  • lytic cycle
  • lysogenic cycle

35. A virus's genetic material is surrounded by

  • a protein capsid
  • DNA
  • a tail fiber
  • nothing

36. Viruses are shaped like

  • spheres
  • cubes
  • a diamond shape with tail fibres
  • all of these

37. Viruses are considered

  • living things
  • non-living things
  • partially living things
  • All of above

38. What is the 1st step of virus infection?

  • Entry
  • Attachment
  • Replication
  • Assembly

39. Viruses are made up of

  • Nucleus, membrane
  • Capsid, nucleus
  • Capsid, nucleic acid
  • Mitochondria, nucleus

40. What happens in the lytic cyle?

  • Virus goes in and leaves the host cell
  • Virus quickly kills the host cell
  • Virus sleeps inside of the host cell
  • Virus stay dormant for a long time

41. Which viral life cycle kills its host cell by lysing?

  • lytic
  • mitosis
  • lysogenic
  • S phase

42. What part of a virus is the protein capsule that houses the genetic material (DNA/RNA)?

  • tail
  • nucleus
  • capsid
  • glycoprotein

43. All viruses contain-

  • nucleic acids
  • ribosomes
  • mitochondria
  • cytoplasm

44. Which best describes the basic structure of a virus?

  • nucleic acid strand surrounded by a protein coat
  • a tail surrounded by a protein coat
  • a tail surrounded by a carbohydrate coat
  • nucleic acid strand surrounded by a carbohydrate coat

45. The capsid of a virus protects the virus from the external environment. What structure is this similar to in a plant cell?

  • ribosome
  • cell membrane
  • vacuole
  • cell wall

46. Which statement regarding viruses is true?

  • a virus can only reproduce inside of a living cell
  • viruses do not contain DNA
  • viruses are unicellular
  • viruses are generally larger than cells

47. It is a software used to prevent, detect and remove destructive programs in a computer.

  • Anti-Spyware
  • Anti-Malware
  • Anti-Virus
  • Anti-Phishing

48. These are the options after your computer is scanned for virus.

  • Repair
  • Quarantine
  • Delete
  • All of above

49. This is a type of virus that infects .exe, .dll, .bin and .sys.

  • Boot sector virus
  • Program virus
  • Polymorphic virus
  • Multipartite virus

50. Some symptoms of a computer infected with a computer virus.

  • Runs slower that usual
  • Drives are inaccessible
  • Printouts produces random characters
  • All of above

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