2024 AQA GCSE COMBINED SCIENCE: TRILOGY 8464/B/1F BIOLOGY Paper 1. Question Paper with Merged Marking Scheme. June 2024 APPROVED

2024 AQA GCSE COMBINED SCIENCE: TRILOGY 8464/B/1F BIOLOGY Paper 1. Question Paper with Merged Marking Scheme. June 2024 APPROVED Candidate number I declare this is my own work. GCSE F COMBINED SCIENCE: TRILOGY Foundation Tier Biology Paper 1F Friday 10 May 2024 Morning Time allowed: 1 hour 15 minutes Materials For this paper you must have: • a ruler • a scientific calculator. Instructions • Use black ink or black ball-point pen. • Pencil should only be used for drawing. • Fill in the boxes at the top of this page. • Answer all questions in the spaces provided. • If you need extra space for your answer(s), use the lined pages at the end of this book. Write the question number against your answer(s). • Do all rough work in this book. Cross through any work you do not want to be marked. • In all calculations, show clearly how you work out your answer. For Examiner’s Use Question Mark 1 2 3 4 5 6 7 TOTAL Information • The maximum mark for this paper is 70. • The marks for questions are shown in brackets. • You are expected to use a calculator where appropriate. • You are reminded of the need for good English and clear presentation in your answers. *JUN248464B1F01* IB/M/Jun24/G4005/E10 8464/B/1F 2 0 1 0 1.1 This question is about cells. Figure 1 shows an animal cell. Figure 1 Label parts A, B and C on Figure 1. Choose answers from the box. [3 marks] cell membrane cell wall chloroplast cytoplasm nucleus Do not write outside the box *02* IB/M/Jun24/8464/B/1F 3 0 1 . 2 What is the function of the nucleus in a cell? [1 mark] Tick () one box. To contain a solution called cell sap To control the activities of the whole cell To control the movement of substances into the cell 0 1 . 3 What is the function of the mitochondria in a cell? [1 mark] Tick () one box. To produce glucose during photosynthesis To produce proteins for the cell To release energy in respiration Question 1 continues on the next page Turn over ► Do not write outside the box *03* IB/M/Jun24/8464/B/1F 4 0 1.4 Figure 2 shows a light microscope. Figure 2 A student is given a prepared slide of animal cells to view using the microscope. Complete the sentences. Use labels from Figure 2. Place the slide on the Use the objective lens that has low power. Look through the Direct the light by moving the Make the image larger by using the high power [4 marks] . . . . Do not write outside the box *04* IB/M/Jun24/8464/B/1F 5 0 1 . 5 Figure 3 shows a different animal cell. Figure 3 Calculate the magnification of the image in Figure 3. Complete the following steps. [4 marks] Measure the width of the image from Y to Z, in millimetres (mm). Width of image = mm Give the width of the image in micrometres (µm). 1 mm = 1000 μm Width of image = μm The cell in Figure 3 has a real width of 40 micrometres (μm). Use the equation to calculate the magnification. magnification = width of image in µm real width of cell in µm Magnification = × Turn over ► Do not write outside the box 13 *05* IB/M/Jun24/8464/B/1F 6 0 2 A student investigated the loss of mass from leaves that were placed in winds of different speed. The student used an electric fan to create different wind speeds. Figure 4 shows the apparatus. Figure 4 This is the method used. 1. Record the mass of one leaf taken from a plant. 2. Attach the leaf to a stand. 3. Leave for 1 hour with the fan off. 4. Record the final mass of the leaf. 5. Repeat steps 1 to 4 with the fan set at different speeds. Use leaves of a similar size each time. 6. Calculate the loss of mass for each leaf. *06* IB/M/Jun24/8464/B/1F Do not write outside the box 7 Table 1 shows the results. Table 1 Fan setting Loss of mass in grams Off 0.06 Low speed 0.15 Medium speed 0.23 High speed 0.31 0 2 . 1 Why did the student do one experiment with the fan off? [1 mark] 0 2 . 2 How does increasing fan speed affect the loss of mass from the leaves? Use Table 1. [1 mark] 0 2 . 3 Explain why the mass of the leaves decreased at all fan speeds. [3 marks] Do not write outside the box *07* Turn over ► IB/M/Jun24/8464/B/1F 8 0 2 . 4 The student repeated the investigation in a room at a higher temperature. Complete the sentence. Choose the answer from the box. [1 mark] smaller the same greater At a higher temperature the loss of mass from the leaves would be . 0 2 . 5 How could the student check the repeatability of the results? [1 mark] Tick () one box. Do the investigation again using a different method. Do the investigation again using a different type of plant. Do the investigation again using the same method. Do not write outside the box 7 *08* IB/M/Jun24/8464/B/1F 9 Turn over for the next question DO NOT WRITE ON THIS PAGE ANSWER IN THE SPACES PROVIDED *09* Turn over ► Do not write outside the box IB/M/Jun24/8464/B/1F 10 0 3 Figure 5 shows different parts of blood. Figure 5 0 3 . 1 Which letter shows a white blood cell? Tick () one box. A B C D 0 3 . 2 Which part of the blood causes the blood to clot? Tick () one box. Plasma Platelets Red blood cells 0 3 . 3 Name two substances transported in the blood. 1 2 [1 mark] [1 mark] [2 marks] Do not write outside the box *10* IB/M/Jun24/8464/B/1F 11 Healthy people can volunteer to donate blood. The donated blood is then given to patients who need the blood. When a volunteer donates blood: • the volunteer’s health is checked • a needle is used to remove blood from a vein in the arm • the volunteer rests for 15 minutes after the donation. 0 3 . 4 Suggest one reason why blood is removed from a vein and not from an artery. [1 mark] Patients may receive blood during a medical emergency. Donating blood and receiving blood has risks. 0 3 . 5 Suggest one advantage and one disadvantage to a patient who receives blood. [2 marks] Advantage Disadvantage 0 3 . 6 Suggest one advantage and one disadvantage to the volunteer who donates blood. [2 marks] Advantage Disadvantage Turn over ► Do not write outside the box 9 *11* IB/M/Jun24/8464/B/1F 12 0 4 This question is about disease. Gonorrhoea is a sexually transmitted disease. 0 4 . 1 Which is a symptom of gonorrhoea? [1 mark] Tick () one box. Damaged immune system Pain when urinating Reduced body temperature Table 2 shows the number of reported cases of gonorrhoea for 5 cities. Table 2 Number of reported cases City of gonorrhoea per 100 000 of the population A 124 B 118 C 40 D 130 E 40 *12* IB/M/Jun24/8464/B/1F Do not write outside the box 13 0 4 . 2 The number of cases of gonorrhoea in each city might not be accurate. Suggest one reason why. [1 mark] 0 4 . 3 Which is the best way to present the data from Table 2? [1 mark] Tick () one box. Bar chart Line graph Scatter diagram 0 4 . 4 The data is given as per 100 000 of the population and not as the total number of people with gonorrhoea. Suggest why. [1 mark] Question 4 continues on the next page Turn over ► Do not write outside the box *13* IB/M/Jun24/8464/B/1F 14 Deposits can form in coronary arteries. The deposits are called plaques. Plaques cause damage to the arteries. Figure 6 shows plaques in a coronary artery. Figure 6 0 4 . 5 Which two factors increase the risk of plaques forming in the coronary artery? [2 marks] Tick () two boxes. High fat diet Low blood glucose Regular exercise Smoking Taking statins Do not write outside the box *14* IB/M/Jun24/8464/B/1F 15 0 4 . 6 Which treatment can be used for the plaques in Figure 6? [1 mark] Tick () one box. A placebo A stent An antibiotic 0 4 . 7 A heart attack can happen when plaques block a coronary artery. During a heart attack muscle cells in the heart die. Explain how the blockage can lead to the death of muscle cells in the heart. [3 marks] Turn over for the next question Do not write outside the box 10 *15* Turn over ► IB/M/Jun24/8464/B/1F 16 0 5 This question is about photosynthesis. 0 5 . 1 Complete the equation for photosynthesis. Choose answers from the box. [2 marks] nitrogen oxygen ethanol water 0 5 . 2 What is the chemical formula for glucose? [1 mark] Tick () one box. CO2 C6H12O6 H2O O2 0 5 . 3 Give two ways plants use the glucose produced by photosynthesis. [2 marks] 1 2 Do not write outside the box *16* IB/M/Jun24/8464/B/1F 17 0 5 . 4 A person has two greenhouses. In each greenhouse, the plants: • are all the same type • receive the same intensity of light and the same volume of water • grow in the same type of soil. Figure 7 shows the greenhouses. Figure 7 The person burns logs in the wood burner in greenhouse B. Explain why the plants in greenhouse B grow faster than the plants in greenhouse A. [4 marks] Do not write outside the box *17* 9 Turn over ► IB/M/Jun24/8464/B/1F 18 0 6 0 6.1 0 6.2 Drinks contain different substances. A drinks company claims that a drink contains sugar, protein and fat. Glucose and fructose are different sugars. Fructose has a much sweeter taste than glucose. Suggest two reasons why the drinks company uses fructose in the drink rather than using glucose. Do not refer to sweetness in your answer. [2 marks] 1 2 Describe how a student could test the drink for sugar. Give the colour of a positive result. [3 marks] Test Colour of positive result Do not write outside the box *18* IB/M/Jun24/8464/B/1F 19 0 6 . 3 Describe how a student could test the drink for protein. Give the colour of a positive result.