IGCSE Sciences - Co-Ordinated (0654) — October–November 2024, Paper 31
12 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Euglena are single-celled organisms that have features of both animal and plant cells. Fig. 1.1 is a labelled diagram of a Euglena, showing eye spot (detects light), flagellum…
Answer this question and get it marked →A list of formulae is shown: CH4, Cl2, MgCl2, N2, NaCl, NH3, O2. Identify the formula from the list which represents a compound that is the main constituent of natural gas.
Answer this question and get it marked →A rock that travels through space and hits the Earth's surface is called a meteorite. Fig. 3.1 shows a speed-time graph for a meteorite as it travels through space, slows down…
Answer this question and get it marked →The number of new infections of HIV in one country was estimated in 2000 and 2018. Table 4.1 shows the results: year 2000 - 280 new infections; year 2018 - 170 new infections.…
Answer this question and get it marked →Table 5.1 shows the observations for the reactions of four metals with water: copper - no reaction; lithium - reacts quickly; potassium - reacts very quickly; calcium - reacts…
Answer this question and get it marked →Fig. 6.1 shows two horizontal forces acting on a truck as it moves forwards along a flat, level road: a forward force of 1500 N and a backward force of 1000 N. Calculate the…
Answer this question and get it marked →Tick the correct definition of inheritance from: inheritance is the transmission of genetic information from the environment; inheritance is the transmission of physical…
Answer this question and get it marked →Fig. 8.1 shows the changes of state of water: steam <- water (boiling, change X) <- ice (melting, change Y). Identify the changes of state represented by X and Y.
Answer this question and get it marked →Fig. 9.1 shows a moth, with points X and Y on the moth's wings. A student forms an image of the moth on a screen using a thin converging lens. A ray of light has been drawn from…
Answer this question and get it marked →A student investigates responses in seeds. They place germinating seeds in a Petri dish. The Petri dish is left on its side in a dark room. After two days the student observes the…
Answer this question and get it marked →Fig. 11.1 shows the molecular structure of ethene (H2C=CH2, with a C=C double bond and each carbon bonded to two hydrogen atoms). State the total number of atoms in a molecule of…
Answer this question and get it marked →Visible light travels 1.5 x 10^8 km from the Sun to the Earth. The speed of light is 3.0 x 10^8 m/s. Calculate the time taken for visible light to travel from the Sun to the Earth.
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