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Investigating Bacterial Growth

Investigating Bacterial Growth. The Four Stages of Bacterial Growth. Lag Phase An adjustment period when the bacteria are switching on or off different machinery necessary to break down the energy source within the immediate environment. 2. Log Phase

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Investigating Bacterial Growth

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  1. Investigating Bacterial Growth

  2. The Four Stages of Bacterial Growth • Lag Phase An adjustment period when the bacteria are switching on or off different machinery necessary to break down the energy source within the immediate environment. 2. Log Phase Rapid growth of bacteria at an accelerated pace. • Stationary Phase Equal rate of growth and death so that overall bacterial numbers stay the same. • Death Phase Rapid cell death usually due to the cells bursting open, also known as cell lysis.

  3. The Optical Density (OD) of Bacterial Culture OD is the amount of light that is able to pass through a liquid culture. The more bacterial cells in a culture, the denser the culture. This means that less light is able to pass through the sample.

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