Edexcel IGCSE Biology · Spec 5.6
Investigating Yeast Fermentation
Covers plan a reproducible yeast fermentation investigation, Identify independent, dependent and control variables and Improve reliability and control practical risks.
Biology revision video
Investigating Yeast Fermentation
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Spec 5.6
What you need to know
- Plan a reproducible yeast fermentation investigation
- Identify independent, dependent and control variables
- Improve reliability and control practical risks
Active recall
Quick check
Answer each question before opening the answer.
What should a gas syringe measure in this investigation?
The volume of carbon dioxide produced over time
Name two variables that must be controlled when testing temperature
Any two of yeast amount, glucose amount or concentration, pH, apparatus and timing
How should reliability be improved?
Repeat each temperature and calculate a mean rate
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