Biology 9700/52 Oct Nov 2021 | Cambridge AS Level Past Papers With Mark Scheme

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- Yeast respiration comparison: Glucose vs. Maltose, Saccharomyces cerevisiae, fermentation processes.
- Independent variable: Type of sugar (glucose, maltose); dependent variable: Rate of gas production.
- Importance of stirring yeast suspension: Homogeneity, consistent distribution of yeast cells.
- Methodology for testing hypothesis: Yeast culture preparation, sugar addition, gas collection measurement.
- Data analysis: Rate of respiration calculation, volume of gas produced over time, graphical representation.
- pH measurement techniques: pH meter advantages over indicator solutions, accuracy, precision, real-time monitoring.

CIE AS & A Level Biology (9700) Nov 2021

Laura Bellini

Classification: Paper 5

Page count: 12

Viewed: 103

Last update: 2 months ago

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Biology 9700/52 Oct Nov 2021 | Cambridge AS Level Past Papers With Mark Scheme

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