O Level Biology Practical 2020 Answers Fixed

If asked to modify or design an experiment to test the effect of temperature on enzyme activity, your answer must include:

Answer: As light intensity increases, the rate of photosynthesis also increases, but may level off at very high light intensities. o level biology practical 2020 answers

Experiment A: Investigating Reducing Sugars and Starch (Food Tests) If asked to modify or design an experiment

To count bubbles accurately at high concentrations, one could use a gas syringe to measure the exact volume of gas instead of counting by eye. the rate of photosynthesis also increases

Magnification=Size of Image (Drawing)Size of Actual SpecimenMagnification equals the fraction with numerator Size of Image (Drawing) and denominator Size of Actual Specimen end-fraction

| Paper | Title | Duration | Marks | Format | |-------|-------|----------|-------|--------| | Paper 3 | Practical Test | 1 hour 15 minutes | 40 | Hands-on lab work with apparatus | | Paper 4/6 | Alternative to Practical | 1 hour | 40 | Written paper testing practical experience |