IGCSE Biology (0970) — October–November 2023, Paper 62
3 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Question 1 · 11 marks · Practical skills
Students investigated the effect of temperature on the activity of amylase. Amylase is an enzyme that catalyses the breakdown of starch to form reducing sugars. The students mixed…
Answer this question and get it marked →Question 2 · 8 marks · Practical skills
Milk contains fats. The enzyme lipase catalyses the breakdown of fats to form fatty acids and glycerol. The fatty acids cause the pH of the milk to decrease. Plan an investigation…
Answer this question and get it marked →Question 3 · 21 marks · Practical skills
Fig. 3.1 is a photograph of a type of seaweed called bladder wrack. The bladders help the seaweed float in water. Line PQ marks the length of one bladder. Draw a large diagram of…
Answer this question and get it marked →