EasyBiologyHigh School (11–12)Biotechnology › Biotechnology: Principles and ProcessesConceptualAPA-LevelIB
A bioreactor has six systems. Match each job with the right system: agitator, oxygen delivery, foam…
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
A bioreactor has six systems. Match each job with the right system: agitator, oxygen delivery, foam control, temperature control, pH control, sampling port.
- Takes small volumes of culture out, at intervals, for testing.
(ii) Keeps the culture at the temperature that is best for the cells.
(iii) Mixes the culture evenly.
(iv) Breaks the foam that forms when the culture is stirred and bubbled.
- Gives the cells the gas that they need to breathe.
(vi) Keeps the acidity steady.
Need a reminder? The key ideaShow
A stirred-tank reactor mixes with a stirrer. A sparged stirred-tank reactor also bubbles sterile air. The parts are the agitator, the oxygen delivery, the foam control, the temperature control, the pH control and the sampling ports. Air flow volume air rate. Product of a batch volume product in each litre.
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Given. Six jobs and six systems.
Plan. Read the name of each system as its job.
Step 1. (i) The sampling port.
Step 2. (ii) The temperature control system.
Step 3. (iii) The agitator system, which is the stirrer.
Step 4. (iv) The foam control system.
Step 5. (v) The oxygen delivery system.
Step 6. (vi) The pH control system.
Answer: (i) sampling port; (ii) temperature control; (iii) agitator; (iv) foam control; (v) oxygen delivery; (vi) pH control.
Check. All six systems are used once.
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