Clostridium and Bacillus

• Q1.A patient presented with trismus and opisthotonus. The probable causative organism is

  • AC. tetani
  • BC. botulinum
  • CC. difficile
  • DC. perfringens
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• Q2."Citron bodies" boat or leaf shaped pleomorphic organism in an exudate is-

  • ACl. welchii
  • BCl. edematiens
  • CCl. septicum
  • DCl. tetani
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• Q3.True statement about cholstridium perfringens are all except:

  • AGas gangrene -alpha toxin is produced by type A strains and responsible for profound toxemia
  • BClostridium perfringens is not the major cause of gas gangrene
  • CPresent in normal feces
  • DC. perfringens type C strains is responsible for necrotizing enteritis
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• Q4.`Malignant pustule' is -

  • AAnthrax ulcer
  • BProliferating rodent ulcer
  • CMalignant melanoma
  • DMarjolin's ulcer
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• Q5.A person working in an abattoir presented with malignant pustule on hand; What is the causative agent?

  • AClostridium botulinum
  • BClostridium perfringens
  • CBacillus anthracis
  • DStreptococcus pyogenes
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• Q6.Commonest age group for infant botulism is

  • A1 to 3 weeks
  • B2 to 4 months
  • C10 to 12 months
  • D7 to 9 Months
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• Q7.Bacillus Anthrax is:

  • AGram positive cocci in cluster
  • BGram positive rods with square ends
  • CGram positive bacili with spherical ends
  • DGram negative cocci in cluster
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• Q8.A child is presenting with vomiting and abdominal pain after 5 hours of eating some food. The most likely causative organism -

  • ABacillus cereus
  • BCl. perfringens
  • CCl. botulinum
  • DV. cholerae
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• Q9.Malignant pustule is referred to:

  • AFacio-cervical actinomycosis
  • BCutaneous anthrax
  • CInfected squamous cell carcinoma
  • DNone of the above
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• Q10.Thirty-eight children consumed eatables procured from a single source at a picnic party. Twenty children developed abdominal cramps followed by vomiting and watery diarrhea 6-10 hours after the party. The most likely etiology for the outbreak is:

  • ARotavirus infection
  • BEnterotoxigenic E.coli infection
  • CStaphylococcal toxin
  • DClostridium perfringens infection
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Answer key

Q1: A. C. tetani; Q2: C. Cl. septicum; Q3: B. Clostridium perfringens is not the major cause of gas gangrene; Q4: A. Anthrax ulcer; Q5: C. Bacillus anthracis; Q6: B. 2 to 4 months; Q7: B. Gram positive rods with square ends; Q8: A. Bacillus cereus; Q9: B. Cutaneous anthrax; Q10: D. Clostridium perfringens infection.

Other topics in Microbiology

• Principles of General Microbiology
• Cells and Organs of the Immune System
• Immune System: Organisation, Function and Response
• Hypersensitivity
• Disorders of Immunity
• Streptococci and Enterococci
• Staphylococci
• Corynebacterium, Listeria and Actinomyces
• Non-Sporing Anaerobes
• Mycobacterium Tuberculosis
• Mycobacteria Other Than Tuberculosis
• Escherichia, Proteus and Klebsiella
• Shigella and Salmonella
• Vibrio and Campylobacterales
• Pseudomonas and Burkholderiales
• Haemophilus
• Yersinia, Brucella, Bartonella and Legionella
• Gram-Negative Cocci
• Rickettsia, Chlamydia and Mycoplasma
• Spirochetes
• Virus Structure and General Properties
• DNA Viruses
• Hepatitis
• HIV
• Myxoviruses and Rhabdoviruses
• Arboviruses and Picornaviruses
• Rubella, Coronaviruses, Prions, Rotavirus, Filovirus, Zika Virus and Nipah Virus
• Superficial and Systemic Fungal Infections
• Opportunistic Fungal Infections
• Principles of Parasitology
• Protozoa: Amoebae, Ciliates and Flagellates
• Protozoa: Sporozoa
• Helminths: Cestodes and Trematodes
• Helminths: Nematodes
• Applied Clinical Microbiology