BMS1026 microbiology (tutorial questions)

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1. which of the following is a characteristic of viruses

  • sensitive to antibiotics
  • possess dna and rna
  • multiple by binary fission
  • possess either dna or rna
  • possess a plasma membrane made of protiens
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2. cytotoxic T cells can:

  • generate nitric oxide burst
  • produce complement
  • produce antibodies
  • release perforin to create pores in the target cell membrane
  • phagocytose foreign particles

3. which of the following is not spread by the respiratory route of transmission

  • influenza
  • mycobacterium tuberculosis
  • rhinovirus
  • trepenema pallidum
  • streptococcus pneumoniae

4. kock's postulates are designed to prove:

  • the only organisms that can be isolated and purified can cause disease
  • that there is a casual relationship between a specific organism and specific effect
  • that a specific infectious disease is caused by a wide variety of organisms
  • that only organism that can grow on a nutrient medium are capable of causing disease
  • that all human diseases are caused by microorganisms

5. when growing bacterium in a flask, what happens to the viable count during the log phase?

  • the viable count increases exponentially
  • the viable count has varied decrease
  • the viable count stays the same
  • the viable count has varied increase
  • the viable count decreases exponentially

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