The question asked why using 20 seedlings instead of 5 would improve the investigation.
Repeating the experiment at least three times at each temperature to calculate an average and identify anomalies, improving reliability. Core Practical Skills for O-Level Biology Success
O Level Biology Practical 2020 Answers: A Comprehensive Guide and Review o level biology practical 2020 answers
Plot points precisely using small "x" marks or encircled dots.
. The task seemed simple enough on paper—investigate the effect of temperature on the rate of respiration—but his hands were shaking as he gripped the pipette. The question asked why using 20 seedlings instead
Show your working! Even if you get the final calculation wrong, you can still get marks for the method.
The temperature of the water bath drops over time, affecting enzyme kinetic energy. Even if you get the final calculation wrong,
If you are using the 2020 paper to revise, follow these steps instead of just memorizing answers:
Due to the COVID-19 global pandemic, students did not sit exam papers in the June 2020 series. However, Cambridge International still published the mark schemes to support teachers and students in their preparations.