(Old Syllabus) Bacterial Growth Phases
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Questions and Answers

During which phase of bacterial growth does cell division stop due to nutrient depletion and toxic product accumulation?

  • Log or Exponential phase
  • Lag phase
  • Stationary phase (correct)
  • Phase of Decline
  • What characterizes the Log or Exponential phase of bacterial growth?

  • Cell division stops
  • Smaller cells, stain uniformly (correct)
  • Maximum cell size
  • Irregular staining, sporulation, and exotoxin production
  • How are bacterial counts affected in the Stationary phase?

  • Increase exponentially
  • Remain stationary due to equilibrium between dying and new cells (correct)
  • Decrease due to autolytic enzymes
  • Reach maximum count
  • What method can be used to obtain the Total Count of bacterial cells?

    <p>Direct counting under a microscope using counting chambers</p> Signup and view all the answers

    Which phase is characterized by the production of autolytic enzymes leading to a decrease in population?

    <p>Phase of Decline</p> Signup and view all the answers

    What is the key feature of the Lag phase of bacterial growth?

    <p>No increase in cell size</p> Signup and view all the answers

    Which method measures the number of living bacterial cells specifically?

    <p>Viable cell count method</p> Signup and view all the answers

    What happens to the number of living and dead cells in the Total Count method?

    <p>Both living and dead cells are counted</p> Signup and view all the answers

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