Practical skills — IGCSE Biology (0970) questions by topic
Practical skills questions plan and interpret real investigations: testing whether huddling reduces heat loss from model animals in hot-water test-tubes, planning how lipase concentration affects milk pH, drawing a large labelled diagram of bladder wrack seaweed, and describing how temperature affects amylase breaking down starch.
State, calculate, describe, suggest and draw lead marks worth 1 to 23 across 16 real questions from 2023 to 2025 papers. Because planning marks reward a specific, testable method rather than a vague description of 'doing an experiment', drafting a full plan and submitting it for instant marking shows exactly which controlled variable or measurement step still needs spelling out.
May–June 2025, Paper 12
The table shows the magnifications and image lengths of three specimens when seen with a light microscope. specimen magnification image length / mm --- --- --- X ×50 0.20 Y ×150…
Answer this question and get it marked →May–June 2025, Paper 62
A student investigated the effect of the concentration of salt solutions on osmosis in potato tissue. The student used three different concentrations of salt solution and potato…
Answer this question and get it marked →The enzyme pectinase is used in the production of apple juice. In an experiment, a student investigated the production of apple juice using five different concentrations of…
Answer this question and get it marked →Hydrogencarbonate indicator can be used to determine the concentration of carbon dioxide in a solution. The table shows the colour of the indicator at different concentrations of…
Answer this question and get it marked →May–June 2023, Paper 51
You are going to investigate the effect of temperature on the rate of respiration in yeast cells. When yeast cells respire they release carbon dioxide gas. Following the method (a…
Answer this question and get it marked →Fig. 2.1 is a photograph of a cross-section of a root from a carrot plant, Daucus carota (magnification ×6), with line PQ across the diameter. Draw a large diagram of the carrot…
Answer this question and get it marked →May–June 2023, Paper 61
A student investigated the effect of temperature on the rate of respiration in yeast cells. When yeast cells respire they release carbon dioxide gas. A syringe of yeast suspension…
Answer this question and get it marked →Fig. 2.1 is a photograph of a cross-section of a root from a carrot plant, Daucus carota (magnification ×6), with line PQ across the diameter. Draw a large diagram of the carrot…
Answer this question and get it marked →May–June 2023, Paper 62
Some animals live in cold places and sometimes huddle together (Fig. 1.1). A student investigated the effect of huddling on heat loss from model animals (test-tubes containing hot…
Answer this question and get it marked →Some plants lose their leaves in the winter and grow new leaves in the spring. A scientist measured the total leaf area of one grapevine plant, repeated this on 100 plants, and…
Answer this question and get it marked →October–November 2023, Paper 52
You are going to investigate the effect of temperature on the activity of amylase. Amylase is an enzyme that catalyses the breakdown of starch to form reducing sugars. Following…
Answer this question and get it marked →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 →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 →October–November 2023, Paper 62
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 →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 →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 →Other IGCSE Biology topics
- Human nutrition (75)
- Organisms and their environment (64)
- Coordination and response (62)
- Reproduction (53)
- Organisation of the organism (cells) (50)
- Plant nutrition (42)
- Characteristics and classification of living organisms (40)
- Variation and selection (40)
- Transport in animals (39)
- Inheritance (39)
- Movement into and out of cells (38)
- Transport in plants (38)