IGCSE Biology (0970) — October–November 2024, 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 organisms carry out respiration, growth, movement and excretion?
Answer this question and get it marked →The chimpanzee belongs to the species Pan troglodytes. What is the genus of this species?
Answer this question and get it marked →The diagram shows a tree leaf with multiple leaflets arranged along a central stalk, with jagged leaf edges. Use the key to identify the tree species to which the leaf belongs.…
Answer this question and get it marked →What is the function of mitochondria in cells?
Answer this question and get it marked →Which row shows a function of the cell membrane and a function of the cell wall in a palisade cell? cell membrane cell wall --- --- --- A active transport active transport B…
Answer this question and get it marked →A specimen is viewed under a microscope with a ×10 magnification. The specimen image measures 30 mm. What is the actual size of the specimen?
Answer this question and get it marked →The diagram shows the water potential of three plant cells. The more negative the value, the higher the solute concentration. Cell P: −360 kPa; Cell Q: −400 kPa; Cell R: −340 kPa…
Answer this question and get it marked →Which base in a DNA molecule always pairs with a G base?
Answer this question and get it marked →The diagram shows the steps in an enzyme-controlled reaction. Substrate binds to enzyme active site forming a complex labelled X, then products are released. What describes the…
Answer this question and get it marked →The graph shows the effect of temperature on the time taken for the complete digestion of starch. The curve shows shortest time (fastest rate) at around 40°C. At which temperature…
Answer this question and get it marked →Which substance is needed to make chlorophyll and which part of the plant absorbs the substance? substance part of the plant where the substance is absorbed --- --- --- A calcium…
Answer this question and get it marked →The diagram shows a type of plant cell with cytoplasm, nucleus, vacuole, and chloroplasts labelled. In which tissue is this cell found?
Answer this question and get it marked →Which components of a balanced diet are needed to make haemoglobin and to prevent scurvy and rickets?
Answer this question and get it marked →Which group of organs belongs to the same organ system?
Answer this question and get it marked →The diagram shows a villus with four structures labelled 1–4 (1=lacteals at top, 2=capillaries/blood vessels, 3=arteriole, 4=venule at base). Which parts transport glucose and…
Answer this question and get it marked →Which conditions lead to the lowest rate of transpiration in a plant?
Answer this question and get it marked →The table shows the transport tissues of plants and some substances that may or may not travel through these tissues. Which row is correct for translocation? plant tissue…
Answer this question and get it marked →The diagram shows the circulatory system of a fish. Structure X is labelled at the top of the diagram where oxygenated blood comes from. What is the structure labelled X?
Answer this question and get it marked →Which factors increase the risk of developing coronary heart disease? 1 increased age 2 regular exercise 3 smoking 4 stress
Answer this question and get it marked →Which features of the human body protect against pathogens in food? red blood cells stomach acid white blood cells --- --- --- --- A yes yes no B yes no no C no yes yes D no no yes
Answer this question and get it marked →What causes air to enter the lungs? external intercostal muscles volume of thorax air pressure in thorax --- --- --- --- A contract decreases decreases B relax decreases increases…
Answer this question and get it marked →The symbol equation for aerobic respiration is shown. C₆HₓOᵧ + 6O₂ → 6CO₂ + zH₂O Which numbers represent the letters shown in the equation as x, y and z? x y z --- --- --- --- A 2…
Answer this question and get it marked →A student investigates the rate of anaerobic respiration in yeast. The total volume of carbon dioxide produced is measured every 10 minutes for 40 minutes. The table shows the…
Answer this question and get it marked →Which part of an amino acid is removed during deamination?
Answer this question and get it marked →Which process happens in a glomerulus in the kidney?
Answer this question and get it marked →The diagram shows a synapse in a reflex arc with two neurones labelled P and Q. What are the identities of the two neurones and in which direction does the neurotransmitter pass?…
Answer this question and get it marked →Which responses occur in the iris of the eye when a person walks from a brightly lit area to a dimly lit area? circular muscles radial muscles --- --- --- A contract contract B…
Answer this question and get it marked →Which statements about hormones are correct? 1 Adrenaline decreases pupil diameter. 2 Adrenaline increases pupil diameter. 3 Insulin decreases blood glucose concentration. 4…
Answer this question and get it marked →Bacteria such as MRSA are resistant to antibiotics. These processes can occur in bacteria. 1 artificial selection 2 genetic variation 3 mutation 4 natural selection Which…
Answer this question and get it marked →A farmer grows hot pepper plants and sweet pepper plants in different fields on his farm. Each year, the farmer saves seeds from the pepper plants to grow the next crop of…
Answer this question and get it marked →Why do different cells in a human body produce different proteins?
Answer this question and get it marked →Which graph shows the mean mass of DNA per cell before, during and after mitosis? Graph A: starts at ~7 units, rises sharply, stays high, then returns to ~7 Graph B: starts at ~4…
Answer this question and get it marked →Which statement about gene mutations is correct?
Answer this question and get it marked →The diagram shows the amount of energy in kJ m⁻² yr⁻¹ at each trophic level of a food chain. producers (88 000) → primary consumers (14 000) → secondary consumers (2000)…
Answer this question and get it marked →Which process in the nitrogen cycle removes nitrogen gas from the atmosphere?
Answer this question and get it marked →A farmer has a small pond on their farm land. One year, most of the organisms in the pond die. The next year, the farmer decreases their use of nitrate fertilisers and fewer…
Answer this question and get it marked →The graph shows how the population of a species of bird has increased following a conservation programme. Bar chart from 1990–2004: 1994≈40, 1996≈50, 1998≈105, 2000≈160, 2002≈230,…
Answer this question and get it marked →The diagram shows a bacterial cell that is used in genetic modification with four structures labelled A, B, C and D. Structure C appears to be the plasmid (small circular DNA).…
Answer this question and get it marked →The diagram shows some apparatus that was used to produce lactose-free milk. Alginate beads containing X are in a column; milk flows through and produces milk containing Y. The…
Answer this question and get it marked →← October–November 2024 Paper 32 · October–November 2024 Paper 12 →