IGCSE Biology (0970) — May–June 2023, Paper 12
40 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Living animals release carbon dioxide. This is an example of which life process? A excretion B movement C nutrition D sensitivity
Answer this question and get it marked →Some statements about species are given. 1 Members of a species all look identical. 2 Members of a species belong to the same genus. 3 Members of a species can produce fertile…
Answer this question and get it marked →The table shows some features of different animals (wings, hair, scales) for rows A–D, with shaded cells indicating the feature is present. Which animal is a reptile? A B C D
Answer this question and get it marked →Which structures are found in the cells of all living organisms? 1 cell membrane 2 chloroplast 3 cytoplasm A 1, 2 and 3 B 1 and 2 only C 1 and 3 only D 2 and 3 only
Answer this question and get it marked →A diagram of a human red blood cell is shown. The length of line XY on the diagram is 40 mm. The actual width of the cell is 0.008 mm. What is the magnification of the diagram? A…
Answer this question and get it marked →Which statements are correct for both diffusion and osmosis? The table considers: involves movement of water only; requires energy from respiration; molecules move from higher…
Answer this question and get it marked →What is a role of water in digestion? A It is an enzyme. B It is a solvent. C It is soluble. D It is a mineral.
Answer this question and get it marked →The concentration of sodium ions in the soil is lower than the concentration inside root hair cells. Which process will be used when sodium ions are taken into root hair cells…
Answer this question and get it marked →The diagram represents a protein molecule made of a chain of small circles. What do the small circles represent? A amino acids B fatty acids C glycerol D simple sugars
Answer this question and get it marked →Which processes depend on the action of enzymes? 1 digestion 2 osmosis 3 respiration A 1 and 2 B 1 and 3 C 1 only D 2 and 3
Answer this question and get it marked →Which diagram of an enzyme, active site and substrate is correct? Diagrams A–D show an enzyme with an active site and a substrate, with differing shape matches between the active…
Answer this question and get it marked →Four test-tubes A–D are set up: A contains an aquatic animal and an aquatic plant in water with black polythene to keep out light; B, C and D contain combinations in the light.…
Answer this question and get it marked →Which row shows the uses of some carbohydrates in plants? Columns: glucose; starch; sucrose. A cell walls; transport; energy storage B energy storage; cell walls; respiration C…
Answer this question and get it marked →The lack of which component of a balanced diet will lead to the development of scurvy? A calcium B iron C vitamin C D vitamin D
Answer this question and get it marked →The diagram shows the human digestive system with structures labelled A, B, C and D. Which structure is the duodenum? A B C D
Answer this question and get it marked →The food label is from a packet of cereal (per 100 g: Energy 985 kJ/235 kcal, Fat 1.5 g, of which saturates 0.3 g, Carbohydrate 45.5 g, of which sugars 3.8 g, Fibre 2.8 g, Protein…
Answer this question and get it marked →Which pathway is taken by water through a plant? A root hair → root cortex → xylem → mesophyll → stomata B root hair → xylem → mesophyll → root cortex → stomata C stomata → root…
Answer this question and get it marked →Which row shows the transpiration rate for the conditions described? Columns: wind speed; atmospheric temperature; transpiration rate. A low; low; fast B high; high; slow C low;…
Answer this question and get it marked →The diagram shows the human heart with labels A, B, C and D. Which label shows the left ventricle? A B C D
Answer this question and get it marked →Which row shows the features of an artery or a vein? Columns: blood vessel; diameter of lumen; thickness of wall. A artery; large; thick B artery; small; thin C vein; large; thin…
Answer this question and get it marked →What are features of gas exchange surfaces in animals? A thick-walled and large surface area B thick-walled and small surface area C thin-walled and small surface area D…
Answer this question and get it marked →Which chemical can be used to show the presence of carbon dioxide gas? A Benedict's solution B biuret solution C ethanol D limewater
Answer this question and get it marked →The diagram represents the exchange of gases during breathing and during respiration in the body, with structures X and Y. Oxygen enters and carbon dioxide leaves, with oxygen and…
Answer this question and get it marked →Which molecule is produced by anaerobic respiration in yeast? A carbon dioxide B lactic acid C oxygen D water
Answer this question and get it marked →The diagram shows the human body and some of its organs labelled A, B, C and D. Which structure removes urea from the blood? A B C D
Answer this question and get it marked →The diagram shows the structures in a reflex arc, including structure X, a receptor and a muscle. What is X? A effector B relay neurone C sensory neurone D synapse
Answer this question and get it marked →Changes in light intensity cause changes in the diameter of the pupil in the eye. Rows describe combinations of light intensity and pupil diameter: 1 high; increases 2 high;…
Answer this question and get it marked →A hormone is injected into a person to reduce their blood glucose concentration. Which endocrine gland is not functioning properly in a person who needs to have this injection? A…
Answer this question and get it marked →The table shows which antibiotics (numbered 1–6) are effective against different types of bacteria (MRSA, Streptococcus, Pseudomonas, Anaerobes); shaded areas show the antibiotic…
Answer this question and get it marked →The diagram shows one way that a plant can reproduce (asexual/vegetative). What is a feature of this type of reproduction? A The offspring show genetic variation. B Only one…
Answer this question and get it marked →Which human characteristics are inherited? The table considers blood group, eye colour, language and sex for rows A–D (key: shaded = inherited, blank = not inherited). A B C D
Answer this question and get it marked →In a sperm cell, which structure contains enzymes that can digest the jelly coat of an egg cell? A acrosome B flagellum C mitochondria D nucleus
Answer this question and get it marked →When breeding, which pair of parents will be pure-breeding for a particular characteristic? A a heterozygous and a homozygous individual B two heterozygous individuals C two…
Answer this question and get it marked →In a pea plant, the allele for round seeds, R, is dominant to the allele for wrinkled seeds, r. If plants with the genotype Rr are crossed, what are the likely proportions of…
Answer this question and get it marked →Which definition of continuous variation is correct? A variation that results in a limited number of phenotypes between two extremes B variation that results in a limited number…
Answer this question and get it marked →Which term is used to describe an organism that makes its own organic nutrients? A carnivore B decomposer C herbivore D producer
Answer this question and get it marked →What is the principal source of energy for most food chains? A carbon dioxide gas B glucose C oxygen D sunlight
Answer this question and get it marked →A single tree is food for a large population of caterpillars. Several small birds eat the caterpillars. The small birds are eaten by a bird of prey. Pyramids A–D show different…
Answer this question and get it marked →The diagram shows the results of a survey on the types of animals found along a stretch of river near to a factory emptying pollutants into the water, with different indicator…
Answer this question and get it marked →Bacteria are useful for manufacturing products for human use. Which statement explains why they are useful? A Bacteria can be grown without nutrients. B Bacteria do not have a…
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