IGCSE Biology (0970) — October–November 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 processes are characteristics of all living organisms? 1 digestion 2 respiration 3 excretion A 1, 2 and 3 B 1 only C 2 and 3 only D 2 only
Answer this question and get it marked →Using the binomial system, the Arctic fox is called Vulpes lagopus. Which row is correct? Columns: Vulpes; lagopus. A genus; kingdom B genus; species C species; genus D species;…
Answer this question and get it marked →Which feature is found in viruses? A cell wall B mitochondria C nucleus D protein coat
Answer this question and get it marked →Which features are possessed by all plant cells? The table considers a cell wall and chloroplasts (key: shaded = yes, blank = no). A B C D
Answer this question and get it marked →The length of a bacterium in a diagram is 50 mm. The magnification of the diagram is ×5000. What is the actual length of the bacterium? A 1 µm B 10 µm C 100 µm D 1000 µm
Answer this question and get it marked →The diagram shows an experiment to investigate osmosis in living cells: a potato containing concentrated sugar solution sits in a glass dish of water. What happens to the volumes…
Answer this question and get it marked →Which statements about active transport are correct? 1 It transports particles from a low concentration to a high concentration. 2 It always transports particles into cells. 3 It…
Answer this question and get it marked →Which row identifies the chemical elements in proteins? The table considers carbon, hydrogen, oxygen and nitrogen (key: shaded = present, blank = absent). A B C D
Answer this question and get it marked →The table shows some large biological molecules and some small biological molecules: 1 cellulose / glucose 2 oil / amino acids 3 glycogen / glucose 4 protein / ethanol Which rows…
Answer this question and get it marked →The graph shows the results of an experiment to investigate the rate of respiration in an organism in different environmental temperatures (10–40 °C). What explains the increase…
Answer this question and get it marked →The diagram shows how the rate of photosynthesis varies with light intensity. The four curves show different conditions of temperature and carbon dioxide concentration (30 °C 0.2%…
Answer this question and get it marked →The diagram shows a cell with groups of bacteria around its edge. The cell has a spiral-shaped chloroplast and cytoplasm. The bacteria have moved to areas of high oxygen…
Answer this question and get it marked →The diagram shows the teeth in the lower jaw of a human, with teeth labelled A, B, C and D. Which tooth is a premolar? A B C D
Answer this question and get it marked →Some medicines are made into tablets coated in a starch-like substance. The coating protects the medicine from the effects of gastric juice. Which enzyme digests the coating and…
Answer this question and get it marked →The diagram shows a villus. The arrows show the direction of flow within vessels associated with the villus, labelled A, B, C and D. Which vessel carries blood to the liver? A B C…
Answer this question and get it marked →From which part of a leaf does most water evaporate during transpiration? A the cuticle B the guard cells C the spongy mesophyll cells D the xylem vessels
Answer this question and get it marked →The photograph shows a cross-section through a sunflower stem, with the tissue labelled Z. What is the name and function of the tissue labelled Z? Columns: name of tissue;…
Answer this question and get it marked →The photomicrograph shows some blood cells, with cell P labelled. What is the function of cell P? A It carries carbon dioxide. B It carries oxygen. C It helps to clot blood. D It…
Answer this question and get it marked →The diagram shows the blood vessels associated with the liver, labelled X, Y and Z (connecting the liver, aorta and small intestine; arrows show direction of blood flow; not to…
Answer this question and get it marked →When a pathogen enters the blood, the immune system uses different mechanisms to destroy the pathogen. The diagram shows one of these mechanisms, with structures X and Y and a…
Answer this question and get it marked →What is the composition of expired air compared with inspired air? Columns: carbon dioxide; oxygen; water vapour. A decreased; increased; increased B decreased; decreased;…
Answer this question and get it marked →During exercise, receptors detect a change in the blood and cause the breathing rate to increase. Which change do the receptors detect and where are they found in the body?…
Answer this question and get it marked →Yeast cells can convert glucose into alcohol and carbon dioxide. Which statement about this process is correct? A The alcohol produced can be used to make bread rise. B The carbon…
Answer this question and get it marked →What is the correct balanced equation for one type of respiration? A C2H5OH → 2C6H12O6 + 2CO2 B 2C2H5OH → C6H12O6 + 2H2O C C6H12O6 → 2C2H5OH + 2CO2 D C6H12O6 → 2C2H5OH + 2H2O
Answer this question and get it marked →Which row shows an organ and the substance it excretes? Columns: organ; substance excreted. A bladder; water B kidney; ions C lung; oxygen D urethra; urea
Answer this question and get it marked →The diagram shows a reflex arc in a human nervous system. The person's finger has just made contact with a sharp object. Parts labelled A, B, C and D. Which part is the motor…
Answer this question and get it marked →Which hormones can increase blood glucose concentration? A adrenaline and insulin B adrenaline and glucagon C adrenaline only D glucagon only
Answer this question and get it marked →What is defined as a substance that is taken into the body and modifies or affects chemical reactions in the body? A antibody B drug C hormone D pathogen
Answer this question and get it marked →What is a disadvantage of sexual reproduction for a population in the wild? A a reduction in genetic diversity B a decreased ability to adapt to changes in the environment C a…
Answer this question and get it marked →Pollen grains from a plant were placed onto the stigma of a flower of the same plant; the lengths of the pollen tubes were measured for four hours (mean length of style is 2 mm).…
Answer this question and get it marked →Which hormones are released by the placenta during pregnancy? A FSH and LH B FSH and progesterone C oestrogen and LH D progesterone and oestrogen
Answer this question and get it marked →Why are cells in the pancreas the only body cells that produce insulin? A All of the genes in the nucleus of a cell in the pancreas are expressed. B Other body cells do not have…
Answer this question and get it marked →Which statement is correct? A Mitosis always produces offspring that are homozygous. B Mitosis produces cells that are genetically identical. C Mitosis produces gametes in…
Answer this question and get it marked →What are sources of genetic variation in populations? 1 meiosis 2 random mating 3 random fertilisation 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 →Which row shows features of xerophytes that reduce water loss? The table considers green colour from chlorophyll, leaves reduced to spines, presence of stomata and thick cuticle…
Answer this question and get it marked →The diagram shows a food chain: tree → insect → blue tit → hawk. Which statement about a pyramid based on this food chain is correct? A Drawn as a pyramid of biomass, the hawk…
Answer this question and get it marked →During the nitrogen cycle, which process releases nitrogen gas into the air? A decomposition B denitrification C nitrification D nitrogen fixation
Answer this question and get it marked →Red-green colour blindness is a sex-linked characteristic caused by a recessive allele. Which prediction can be made about the children of a woman who is colour-blind and a man…
Answer this question and get it marked →One method of conserving fish stocks is to have a minimum mesh size for fishing nets. How is the mesh size chosen to conserve a particular fish species? A The holes in the net…
Answer this question and get it marked →The diagram shows how a human gene can be inserted into a bacterium: a gene is removed from a human chromosome (step 1), a bacterial plasmid is removed and cut (step 2), a human…
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