IGCSE Biology (0610) — May–June 2023, Paper 22
40 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Which process occurs both in plants and in animals? A excretion B phagocytosis C photosynthesis D transpiration
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 →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 →In the diagram of the palisade cell, the distance between X and Y is 20 mm. The actual width of the cell between X and Y is 40 µm. What is the magnification of the diagram? A ×200…
Answer this question and get it marked →The diagram shows a root hair cell. When does water enter the cell by osmosis? A when the concentration of solutes outside the cell is greater than inside the cell B when the…
Answer this question and get it marked →Which row shows the changes that occur during the germination of a seed? Columns: respiration rate; amount of energy required; how ions are absorbed. A decreased; decreased;…
Answer this question and get it marked →The diagram shows the human alimentary canal with four structures labelled A, B, C and D. In which structure is most glucose absorbed into the blood? A B C D
Answer this question and get it marked →DNA contains pairs of bases. Which pair shows a correct combination of bases? A A and C B C and G C G and A D T and G
Answer this question and get it marked →In which region of the alimentary canal is maltose digested? A colon B rectum C small intestine D stomach
Answer this question and get it marked →The graphs show the effect of temperature on enzyme activity. This enzyme has an optimum temperature of 30 °C. Each option A–D plots enzyme activity against temperature (0–60 °C).…
Answer this question and get it marked →The diagram shows a leaf on a plant used in a photosynthesis experiment. At the start there is no starch in the leaf. The leaf is part green and part white (variegated). A piece…
Answer this question and get it marked →The graph shows the effect of temperature on the rate of photosynthesis. Which statement explains the change in rate of photosynthesis between 15 °C and 20 °C? A Chlorophyll is…
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 four structures labelled A, B, C and D. Which structure is the duodenum? A B C D
Answer this question and get it marked →Humidity and wind speed are two factors that affect the rate of transpiration. How do these two factors affect the concentration gradient of water molecules between the inside of…
Answer this question and get it marked →During an investigation into the movement of substances in a plant, a ring of tissue containing the outer part of the transport tissue (epidermis and phloem) is removed, as shown.…
Answer this question and get it marked →The diagram shows the human heart with four parts labelled 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 →Cholera bacteria in the gut cause secretion of chloride ions which leads to diarrhoea. Each option A–D is a diagram showing the movement of chloride ions (Cl⁻) and water (H₂O)…
Answer this question and get it marked →Different stages in the process of expiration are listed. 1 Rib cage moves downwards and inwards. 2 Volume of thorax decreases and pressure in lungs increases. 3 Air is pushed out…
Answer this question and get it marked →Which row shows aerobic respiration? Columns: substrates; products. A 6CO₂ + 6H₂O; C₆H₁₂O₆ + 6O₂ B C₆H₁₂O₆ + 6CO₂; 6H₂O + 6O₂ C 6CO₂ + 6O₂; C₆H₁₂O₆ + 6H₂O D C₆H₁₂O₆ + 6O₂; 6CO₂ +…
Answer this question and get it marked →In which organ is lactic acid respired aerobically to remove an oxygen debt? A brain B heart C liver D lungs
Answer this question and get it marked →The diagram shows a cross-section of a kidney with three structures labelled P, Q and R. What are the correct names for structures P, Q and R? Columns: P; Q; R. A urethra; cortex;…
Answer this question and get it marked →Which statement describes what happens during the transmission of an electrical impulse along a reflex arc? A The relay neurone has receptor proteins which bind with…
Answer this question and get it marked →During the pupil reflex in bright light, what describes the actions of the muscles in the iris? A The circular muscles of the iris contract and the radial muscles relax. B The…
Answer this question and get it marked →Each diagram A–D shows the distribution of auxin in a shoot tip with light coming from one side (key: direction of light; auxin). Which distribution of auxin will cause the shoot…
Answer this question and get it marked →What is an advantage of asexual reproduction in a wild population? A The population has reduced ability to respond to changes in the environment. B The population can increase…
Answer this question and get it marked →The diagram shows the structure of part of a flower, with an anther and a stigma. An arrow represents the transfer of pollen from the anther to the stigma of the same flower.…
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 →The following are involved in protein synthesis. 1 amino acids assembled in order 2 mRNA moves to the cytoplasm 3 mRNA passing through a ribosome 4 DNA in the nucleus In which…
Answer this question and get it marked →A man of genotype IᴬIᵒ and woman of genotype IᴮIᵒ have a child. What is the chance that the child will have the same blood group as one of its parents? A zero B 1 in 4 C 1 in 2 D…
Answer this question and get it marked →A man who has red-green colour blindness has a child with a woman who does not have red-green colour blindness. The child has red-green colour blindness. The man and woman decide…
Answer this question and get it marked →Which types of variation can be inherited? Columns: variation caused by genes; variation caused by the environment (key: ✓ = yes, blank = no). Which row A–D is correct? A B C D
Answer this question and get it marked →Which feature is a leaf adaptation for living in a hot, dry desert? A hairy B large surface area C many stomata D thin waxy cuticle
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 →The diagram shows two pyramids (P and Q) based on food chains in which the producer is a large tree. Pyramid P has a narrow base widening upwards; pyramid Q has a broad base…
Answer this question and get it marked →What is a negative impact on the environment caused by deforestation? A decrease in land for livestock production B decreased levels of carbon dioxide in the air C increase in…
Answer this question and get it marked →The diagram shows the positions of four farms (A, B, C, D) and the concentrations of nitrate at different points in a river (nitrate concentration / ppm). Which farm is likely to…
Answer this question and get it marked →The diagram shows a bacterial cell containing a plasmid. What is inserted into the plasmid if this cell is to be used for the production of insulin? A a length of DNA from a human…
Answer this question and get it marked →Yeast carries out anaerobic respiration, making carbon dioxide and ethanol as end-products. Which end-products can be used to make biofuel and bread? Columns: biofuel; bread. A…
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