IGCSE Sciences - Co-Ordinated (0973) — May–June 2024, Paper 42
12 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Fig. 1.1 is a diagram of a wind-pollinated flower with parts labelled A to F. State which letter in Fig. 1.1 identifies the part where: fertilisation occurs ...; pollen is…
Answer this question and get it marked →A student heats three substances X, Y and Z in a water-bath. Table 2.1: X (solid before, liquid during, solid after); Y (liquid throughout); Z (solid throughout). Draw one line…
Answer this question and get it marked →Fig. 3.1 shows a sea turtle. On Fig. 3.1, draw an arrow to show the direction of the weight force acting on the sea turtle. Label your arrow with the letter W.
Answer this question and get it marked →Blood glucose concentration is controlled so that it remains within set limits. State the name given to this type of control.
Answer this question and get it marked →Some students investigate the reaction between marble chips and dilute hydrochloric acid, using chips of three different sizes A, B and C with excess acid, measuring the volume of…
Answer this question and get it marked →Fig. 6.1 shows an electric pressure-washer washing a car. The pressure-washer pumps water at high pressure through a small nozzle of cross-sectional area 5.0 x 10^-6 m2. The water…
Answer this question and get it marked →A student investigates antibiotic resistance in one strain of bacteria, using five antibiotics on paper discs placed in a Petri dish with the bacteria for three days. Fig. 7.1…
Answer this question and get it marked →Fig. 8.1 shows the structures of three carbon compounds (ethene, ethanoic acid, ethanol). Ethene is an unsaturated hydrocarbon. Explain how the structure of ethene shows that…
Answer this question and get it marked →The element strontium has many naturally occurring isotopes. Table 9.1 shows the half-lives of four unstable isotopes: strontium-82 (25.4 days), strontium-83 (1.35 days),…
Answer this question and get it marked →Red blood cells are specialised to transport oxygen. Describe two ways that red blood cells are adapted for their function.
Answer this question and get it marked →Sulfuric acid is made by the Contact process. Fig. 11.1 shows part of the Contact process (sulfur - sulfur dioxide - sulfur trioxide, with essential conditions: 1 catalyst, 2 ?, 3…
Answer this question and get it marked →Table 12.1 gives information about six types of power station (energy per kg of fuel/MJ, efficiency/%, percentage of world electricity production): coal (29, 32, 37);…
Answer this question and get it marked →