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During log phase

  • A.Microorganisms increase in size of cell and metabolic rate
  • B.The cells start dividing and their number increase by geometric progression
  • C.Rate of multiplication and death becomes almost equal 
  • D.Population of the cells decreases

Answer: B

Correct answer: The cells start dividing and their number increase by geometric progression

In the log (exponential) phase the cells divide at a constant rate, so their number doubles at each generation - a geometric progression, which plots as a straight line on a logarithmic scale. This is the phase in which the population is most uniform and most susceptible to antibiotics, since so many cells are building walls.

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