(b) so that the lipase and the reached the right temperature 1 (c) any two from ignore explanations decrease in time or faster (breakdown) • then increase in time or then slower (breakdown) • fastest / least time / optimum at 35°C • 2 (d) any two from: ignore ߢtest at more temperaturesߣ unqualified test more regularly eg test every minute • any interval < 5min test at smaller temperature intervals • any value <15°C allow test more temperatures in the range test between 50 (°C) and 95 (°C) • any value in range, eg test at 70 repeat at same temperatures • or repeat the investigation or compare results with others allow do it again 2 (e) (i) (lipase / it) denatured / destroyed / changed shape allow damaged / deformed do not accept killed ignore broken (down) 1 (ii) fatty acids and glycerol 1 [8]
(b) so that the lipase and the reached the right temperature 1 (c) any two from ignore explanations • decrease in time or faster (breakdown) • then increase in time or then slower (breakdown) • fastest / least time / optimum at 35°C 2 (d) any two from: ignore ߢtest at more temperaturesߣ unqualified • test more regularly eg test every minute any interval < 5min • test at smaller temperature intervals any value <15°C allow test more temperatures in the range • test between 50 (°C) and 95 (°C) any value in range, eg test at 70 • repeat at same temperatures or repeat the investigation or compare results with others allow do it again 2 (e) (i) (lipase / it) denatured / destroyed / changed shape allow damaged / deformed do not accept killed ignore broken (down) 1 (ii) fatty acids and glycerol 1 [8]
b3_digestion_mark_scheme.docx