Observe the first sign of a color change to determine the concentration of reducing sugars. The Findings: was the highest concentration, showing a rapid change to a brick-red precipitate in roughly 26 seconds.
Use a to maintain a constant temperature, as cooling water affects reaction rates. o level biology practical 2020 answers
The 2020 Paper 31/32 for Cambridge O Level focused on membrane permeability and photosynthesis. Setup: Beetroot cylinders of equal length ( ) were placed in water baths at different temperatures ( 40∘C40 raised to the composed with power C 60∘C60 raised to the composed with power C 80∘C80 raised to the composed with power C Observe the first sign of a color change
The second half of the paper shifted to anatomy and observation skills. Specimen Analysis: o level biology practical 2020 answers