Biology 5090/42 Oct Nov 2024 | Cambridge O-Level Past Papers With Mark Scheme

1. Food Testing & Biochemical Analysis | Starch test using iodine, Benedict’s test for sugar, Biuret test for protein, and importance of sample preparation in food tests.

2. Photosynthesis Investigation | Measuring oxygen production to determine photosynthesis rate, effect of different light wavelengths, and designing experiments for light intensity.

3. Data Handling & Graphing | Recording and analyzing experimental results, calculating mean values, constructing bar charts, and interpreting trends in photosynthesis.

4. Biological Drawing & Measurement | Observing insect morphology, drawing biological diagrams, measuring specimens, and using keys for species identification.

5. Practical Skills & Experimental Design | Controlling variables, ensuring reliability, maintaining apparatus cleanliness, and justifying methodological choices in biological experiments.