Introduction & structure of virus MCQ 19+

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• The following viruses can be inactivated by detergent
  ক

  Human immunodeficiency virus

  খ

  Hepatitis B virus

  গ

  Rabies virus

  ঘ

  Hepatitis A virus

  ঙ

  Poliomyelitis virus
• Following factors differentiate viruses from Chlamydia
  ক

  The presence of a single type of nucleic acid

  খ

  Obligate intracellular parasites

  গ

  They need for arthropod vectors

  ঘ

  Dependency on the host cell for energy

  ঙ

  Aerobic organism
• Inclusion bodies may be produced by following viral infections
  ক

  Pox virus

  খ

  Rabies virus

  গ

  Herpes virus

  ঘ

  Hepatitis C virus

  ঙ

  Dengue virus
• The following statements regarding viral inclusion bodies are true
  ক

  Virus-specific structures produced in the course of viral multiplication within cells

  খ

  Become far larger than the individual virus particle

  গ

  May be situated in both nucleus and cytoplasm

  ঘ

  Have an affinity for basic dyes

  ঙ

  Their presence is not of significant diagnostic aid
• Inclusion body can form in following viral infection
  ক

  Cytomegalo virus

  খ

  Pox virus

  গ

  Measles

  ঘ

  Rubella

  ঙ

  Hepatitis A
• Presence of inclusion bodies may be associated with following viruses
  ক

  Measles virus

  খ

  Rabies virus

  গ

  Cytomegalovirus

  ঘ

  Rotavirus

  ঙ

  Coronavirus
• The following statements are true for viruses
  ক

  May have an envelope

  খ

  May contain enzymes for replication

  গ

  Contain both DNA and RNA

  ঘ

  Have their own metabolism

  ঙ

  May contain a cell wall
• The following statements regarding viruses
  ক

  Viruses may produce cytopathic changes in cell culture

  খ

  Virus infected cells may be transformed

  গ

  Some viruses may have a lipid envelope

  ঘ

  All viruses are sensitive to antiviral agents

  ঙ

  Naked viruses are destroyed by lipid solvents
• Following statements are true regarding a virus particle
  ক

  Can replicate only in living cells

  খ

  Contains only DNA as its genome

  গ

  Replication occurs by binary fission

  ঘ

  It resembles a parasite at the genetic level

  ঙ

  Surface antigen is a component of outer capsule
• Following characteristics are attributed to a virus
  ক

  Obligatory intracellular organism

  খ

  Viruses have either DNA or RNA

  গ

  Some viruses can cause cancer

  ঘ

  Possesses a rigid cell wall

  ঙ

  Viruses can synthesize protein
• The countries not eradicating wild poliovirus transmission are
  ক

  Pakistan

  খ

  Afghanistan

  গ

  India

  ঘ

  Nepal

  ঙ

  Nigeria (Eradicate in 2020)
• RNA viruses undergoing their entire replicative cycle in the cytoplasm are
  ক

  Flavivirus

  খ

  Reo virus

  গ

  Picorna virus

  ঘ

  Influenza virus

  ঙ

  Retrovirus
• Reassortment of genes may occur with
  ক

  Influenza A virus

  খ

  Rotavirus

  গ

  Cytomegalovirus

  ঘ

  Hepatitis B virus

  ঙ

  Human Metapneumovirus
• Following viruses have segmented genome
  ক

  Orthomyxo viruses

  খ

  Bunya viruses

  গ

  Rota viruses

  ঘ

  Herpes viruses

  ঙ

  Paramyxo viruses
• Reverse transcriptase enzvme is present in
  ক

  HBV

  খ

  HIV

  গ

  HCV

  ঘ

  Ebola virus

  ঙ

  Zika virus
• Virus/es inactivated by lipid solvents and detergents is/are
  ক

  Influenza virus

  খ

  Rabies virus

  গ

  SARS-CoV-2

  ঘ

  Poliovirus

  ঙ

  Rotavirus
• Viruse (s) possess double-stranded nucleic acid in its genome include(s)
  ক

  Herpes simplex virus

  খ

  Rota virus

  গ

  Adenovirus

  ঘ

  Hepatitis A virus

  ঙ

  Coxsackie virus
• Viral cytopathic effect(s) include(s)
  ক

  Intranuclear inclusions

  খ

  Giant cell formation

  গ

  Cytoplasmic vacuoles

  ঘ

  Perinuclear halo

  ঙ

  Metachromatic granules