Candidates typically investigated the breakdown of hydrogen peroxide by the enzyme , often using potato extract or yeast.
[ \textMagnification = \frac\textDrawn size\textActual size = \frac20\ mm0.05\ mm = \times 400 ] o level biology practical 2020 answers
For the , the exam focused on testing core skills like food tests, enzyme activity, and biological drawings. While specific data depends on the exact specimen you were given in the lab, the following breakdown covers the key questions and expected answers. 1. Investigation of Enzyme Activity (Catalase) As the students collected their data, they began
Beetroot cylinders were cut to exactly 30 mm, washed to remove surface pigment, and placed in water baths at 40°C, 60°C, and 80°C. Key Observations: As the students collected their data
Pineapple typically showed high enzyme activity, while banana showed little to none.
As the students collected their data, they began to notice a trend. The closer the lamp was to the plant, the more oxygen was produced. This made sense, as higher light intensities provide more energy for photosynthesis to occur.