A Fermenter: Important details: Cooling jacket keeps the microorganisms at optimum temperature. – They will produce lots of heat through respiration, therefore need to be cooled! Paddles keep stirring the mixture. This stops waste products from – building up and keeps the air evenly mixed Nutrient medium supplies the microorganisms with fuel for – respiration Sterile Air supply supplies clean O2 for respiration (note: this is not – required in anaerobic fermentation processes) monitors temperature and pH, keeps the fermenter at Data-logger – optimum conditions You don’t need to be able to draw this out, but you could be asked to label a diagram of a fermenter or be asked to explain the function of the various parts of a fermenter.
A Fermenter: Important details: Cooling jacket – keeps the microorganisms at optimum temperature. They will produce lots of heat through respiration, therefore need to be cooled! Paddles – keep stirring the mixture. This stops waste products from building up and keeps the air evenly mixed Nutrient medium – supplies the microorganisms with fuel for respiration Sterile Air supply – supplies clean O2 for respiration (note: this is not required in anaerobic fermentation processes) Data-logger – monitors temperature and pH, keeps the fermenter at optimum conditions You don’t need to be able to draw this out, but you could be asked to label a diagram of a fermenter or be asked to explain the function of the various parts of a fermenter.
igcse_biology_revision_book.docx