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OCR A Biology

Pop Temp High O2 Low Enzymes Waste Formed

Limiting factors in exponential bacterial growth include nutrients, O2 levels, temperature, waste buildup, and pH.

Fatores limitantes no crescimento bacteriano exponencial incluem nutrientes, níveis de O2, temperatura, acúmulo de resíduos e pH.

Front limiting factors affecting expo growth rate of bacteria
Back
  • nutrients (becomes used up and eventually insufficient to support further growth/repro)
  • O2 levels (demand for O2 inc as pop inc)
  • temp (enzyme-controlled reactions, low temp low activity, high temp high activity but microorganism dies if too high as it denatures enzymes)
  • build up of waste (as pop inc, more waste formed which inhibits further growth)
  • pH (CO2 formed by respiration inc as pop inc, pH falls and affects enzymes)

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