Photo AI
The diagram shows a laboratory fermenter - Edexcel - GCSE Biology - Question 2 - 2016 - Paper 1
Question 2
The diagram shows a laboratory fermenter. A student used the fermenter to investigate the effect of pH on the growth of yeast cells. (a) Before being used, the emp... show full transcript
Worked Solution & Example Answer:The diagram shows a laboratory fermenter - Edexcel - GCSE Biology - Question 2 - 2016 - Paper 1
Step 1
Step 2
State two conditions that should remain constant during the investigation.
Answer
- Temperature: Maintaining a consistent temperature ensures that yeast growth is not affected by environmental changes.
- Rate of stirring: Keeping the stirring constant allows for even distribution of nutrients and gas exchange.