BY4.4 Bacterial Growth
- Created by: Yazmin Ali
- Created on: 14-06-16 20:50
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Bacterial growth
reproduce asexually by binary fission although some can reproduce sexually
4 stages of growth:
- lag phase: little growth
- cells are taking up water, carrying out protein synthesis, producing enzymes
- log pahse: populaton grows exponentially
- populaton doubles every given unit of time
- stationary phase: populaton is stable
- bacteria dying at the same rate as they are being produced
- death phase: population crashes
- more bacterial cells are dying then are being produced
Conditions necessary for growth
microorganisms reproduce rapidly in an environment suitable for growth
Nutrients: carbon usually as glucose
: nitrogen - organic and inorganic form for the production of amino acids in protein synthesis
: growth factors: vitamins and minerals
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