O Level Biology Practical 2020 - Answers __exclusive__

The (Syllabus 5090 and 6093) centered on testing students' ability to execute experimental procedures, record precise observations, and interpret biological data. Key experiments included investigating glucose concentration in "urine" samples and analyzing the transverse section of a lime fruit . 2020 Practical Paper Highlights & Answers

: Ensure all raw data is recorded to the same degree of precision (e.g., all times to the nearest second).

In this experiment, students were tasked with estimating the concentration of glucose in five different samples (labeled A-E) representing "urine."

Starch solution (or starch suspension).

The temperature of the water bath decreased or fluctuated over the course of the experiment, affecting enzyme behavior.

Disclaimer: The answers provided here are based on general pedagogical reviews of the 2020 Cambridge O Level Biology practical papers and should be used as a study guide.

The 2020 O-Level Biology Practical paper focused heavily on fundamental biological concepts tested through hands-on application. The exam required students to demonstrate proficiency in: o level biology practical 2020 answers

To ensure maximum marks in future practical examinations, keep these fundamental tips in mind:

Volume of gas produced in a set timeframe, or the time taken for a color change to occur. Model Answers and Observations

If the experiment involved sugar/salt solutions, students needed to explain that water moved out of the tissue via osmosis because the external solution had a lower water potential, rendering the tissue flaccid. The (Syllabus 5090 and 6093) centered on testing

This question focused on the breakdown of hydrogen peroxide ( H2O2cap H sub 2 cap O sub 2

Headings must include both the independent variable and the dependent variable with their respective units separated by a forward slash (e.g., Time / s or Volume of gas / cm³ ).

Distinguish between human errors and systematic experimental limitations. In this experiment, students were tasked with estimating

Suggesting improvements to experiments, such as using a buffer solution to control pH. Final Thoughts for 2026 Candidates