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Download 2024 AQA GCSE COMBINED SCIENCE: TRILOGY 8464/B/1H Biology Paper 1H Question Paper + Mark S and more Exams Biology in PDF only on Docsity!
2024 AQA GCSE COMBINED SCIENCE: TRILOGY 8464/B/1H Biology Paper 1H Question Paper + Mark Scheme AQA Please write clearly in block capitals. Centre number Candidate number Surname Forename(s) Candidate signature | declare this is my own work. GCSE COMBINED SCIENCE: TRILOGY Higher Tier Biology Paper 1H Friday 10 May 2024 Morning Time allowed: 1 hour 15 minutes Materials _ For this paper you must have: Bor Brariners Use * aruler Question Mark * ascientific calculator. ; Instructions 2 e Use black ink or black ball-point pen. 3 e Pencil should only be used for drawing. 4 Fill in the boxes at the top of this page. « Answer all questions in the spaces provided. 5 « If you need extra space for your answer(s), use the lined pages at the end of 6 this book. Write the question number against your answer(s). 7 ¢ Do all rough work in this book. Cross through any work you do not want to be marked. TOTAL ¢ Inall calculations, show clearly how you work out your answer. Information ¢ The maximum mark for this paper is 70. « The marks for questions are shown in brackets. e You are expected to use a calculator where appropriate. e You are reminded of the need for good English and clear presentation in your answers. I WME eye 2 [oja}{4] [o{1}.[2] 02 Do not write outside the Drinks contain different substances. box 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 IB/M/Jun24/8464/B/1H 2 Do not write outside the [o[1].[4] The human digestive system breaks down protein and fat in the drink. bok Describe how protein and fat are digested. You should include: e the enzymes involved e where the enzymes are produced. [6 marks] 13 INI IB/M/Jun24/8464/B/1H 4 Do not write outside the box Turn over for the next question DO NOT WRITE/ON THIS PAGE ANSWER IN THE/SPACES PROVIDED Turn over > MUN IB/M/Jun24/8464/B/1H 5 Do not write outside the [o[2].[1| What was the independent variable for the investigation? box [1 mark] Tick (VW) one box. Change in mass of tube Concentration of salt solution Time in salt solution Volume of solution Z [o[2].[2| The student dried the outside of each tube with a paper towel before recording the mass. Why was it important to dry the tubes? [1 mark] Question 2 continues on the next page Turn over > 07 IB/M/Jun24/8464/B/1H 7 Table 1 shows the results. box Table 1 Concentration of Mass of tube in grams Percentage (%) in mol/dm? At start After 2 hours Change change in mass 0.0 15.54 16.50 0.96 xX 0.2 15.16 15.78 0.62 41 0.4 15.00 15.35 0.35 2.3 0.6 15.29 15.37 0.08 0.5 0.8 14.95 14.75 0.20 -1.3 1.0 14.77 14.40 0.37 2.5 [0[2].[3] Calculate value X in Table 1. Give your answer to 1 decimal place. [3 marks] Value X (1 decimal place) = % [0[2].[4] Complete Figure 2. You should: ¢ plot the percentage change in mass from Table 1 for salt concentrations of only 0.2 mol/dm? to 1.0 mol/dm? * draw a line of best fit. One of the results has been plotted for you. [3 marks] 08 IB/M/Jun24/8464/B/1H 8 [o[3|[4] [o[3][2] [o[3][3] 10 10 Do not write outside the This question is about communicable diseases. box Measles is a communicable disease caused by a pathogen. What type of microorganism causes measles? [1 mark] Vaccinations help reduce the spread of measles. Suggest two ways the spread of measles can be reduced. Do not refer to vaccination in your answer. [2 marks] 1 2 Describe how the measles vaccine helps a person to become immune to the measles pathogen. [4 marks] IB/M/Jun24/8464/B/1H 10 11 Do not write itside the Norovirus is a type of virus. ae [o[3].[4] Explain how viruses cause illness. [2 marks] [0[3].[5| Drugs can help to reduce the symptoms of the norovirus infection. New drugs must go through clinical trials before being licensed for use. Give three reasons why clinical trials are needed. [3 marks] 1 2 3 12 Turn over for the next question Turn over > 11 IB/M/Jun24/8464/B/1H 11 13 13 This question is about photosynthesis. What is the symbol equation for photosynthesis? Tick (“) one box. 6COz2 + CeH126 —- 6H2O + 602 CeH1206 + 602 — 6CO2 + 6H,0 6CO2 + 6H20 — CeHi20e + 602 602 + 6H2O0 — 6CO2 + CeHi206 Question 4 continues on the next page [1 mark] Turn over > IB/M/Jun24/8464/B/1H Do not write outside the box 13 A student investigated the relationship between temperature and the rate of photosynthesis. 14 The student measured the volume of gas produced by an aquatic plant in 1 hour. The student collected the gas in a measuring cylinder. Table 2 shows the results. Table 2 Temperature | Volume of gas produced in°C in 1 hour in cm? 10 1 15 2 20 4 25 8 30 16 35 16 40 2 45 0 [o[4].[2| Describe the effect of increasing temperature on the rate of photosynthesis. INI Use data from Table 2. [3 marks] IB/M/Jun24/8464/B/1H Do not write outside the box 14 [o[4}[5] [o|4].[6] 16 16 Do not write outside the A person grows tomatoes in a greenhouse. box The mean temperature of the greenhouse is 15 °C. A heater would keep the temperature of the greenhouse at 25 °C. Suggest two reasons against using a heater set at 25 °C in the greenhouse. Do not refer to cost in your answer. [2 marks] The person cut a stem from one of the tomato plants. The cut stem was placed in soil to grow new roots. Which tissue in the cut stem will differentiate into new root cells? [1 mark] Tick (“) one box. Epidermis Meristem Mesophyll Phloem 10 IB/M/Jun24/8464/B/1H 16 17 Do not write outside the This question is about microscopy. box [o[5].[1| Figure 3 shows bacteria viewed using a microscope. Figure 3 What type of microscope was used to view the bacteria in Figure 3? Give a reason for your answer. [1 mark] Type of microscope Reason Question 5 continues on the next page Turn over > IMMA IB/M/Jun24/8464/B/1H 17 19 Do not write outside the [o[5].[3| Figure 4 shows a special slide used to determine the size of a cell viewed using bok a microscope. Figure 4 o—_—_ ‘0 30 40 50 Each small division on the scale is 1.5 um Calculate the magnification of the cell shown in Figure 4. [5 marks] Magnification = x 9 Turn over for the next question Turn over > IN 19 IB/M/Jun24/8464/B/1H 19 20 Smoking increases the risk of lung cancer. [o[6].[1| Figure 5 shows a lung cell dividing. Figure 5 Describe the process of the cell cycle shown in Figure 5. [4 marks] INT IB/M/Jun24/8464/B/1H Do not write outside the box 20 
