Partial preview of the text
Download Actual 2024 AQA GCSE BIOLOGY 8461/1H Paper 1 Higher Tier Question Paper + Mark Scheme Actu and more Exams Biology in PDF only on Docsity!
PP1H
ficé@ PE ROA GCSE BIOLOGY 8461/1H Paper 1 Higher Tier Question Paper + Mark Scheme AQA™ Please write clearly in block capitals. Centre number Candidate number Surname Forename(s) Candidate signature GCSE BIOLOGY Higher Tier Paper 1H | declare this is my own work. /) PP1H Friday 10 May 2024 Morning ‘Time allowed: 1 hour 45 minutes Materials For this paper you must have: * aruler Question Mark * ascientific calculator. 1 For Examiner's Use Instructions e 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 8 to be marked. Inall calculations, show clearly how you work out your answer. TOTAL Nl ola}ale|nr Information « The maximum mark for this paper is 100. e The marks for questions are shown in brackets. « 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. Jou IB/M/Jun24/E15 8461/1H iLovePDF Do not write outside the Answer all questions in the spaces provided. box A person has coronary heart disease. [o[1].[1] Which blood vessels are affected by coronary heart disease? [1 mark] Tick (“) one box. Arteries Capillaries Veins A person's heart stops beating. The person stops breathing. A first-aider pushes down on the person’s chest. Pushing down on the person’s chest puts pressure on the heart. [o[1].[2] Explain why putting pressure on the heart helps the person. [2 marks] 02 IB/M/Jun24/8461/1H iLovePDF Table 1 shows the effect of smoking on the risk of developing different cardiovascular diseases. Table 1 Cardiovascular Percentage (%) increase in risk disease compared to people who have never smoked E 14 F 20 G 29 H 70 [o[1].[6] Give two conclusions that can be made from the data in Table 1. [2 marks] Complete Figure 1. You should: « label the y-axis e add the correct scale to the y-axis plot the data from Table 1 ¢ label each bar. The bar for cardiovascular disease E has been plotted for you. [4 marks] 04 IB/M/Jun24/8461/1H Do not write outside the box iLovePDF 5 Do not write outside the Figure 1 box i i t t i i i i HE E Cardiovascular disease [o[1].[8] Describe one lifestyle factor that can increase the risk of cardiovascular disease. Do not refer to smoking in your answer. [1 mark] 14 Turn over > IB/M/Jun24/8461/1H IMI iLovePDF Do not write outside the CF affects many organs in the body. box The main organs affected are: « the lungs e the pancreas e the small intestine. [o[2|.[2] Figure 2 shows organs of the human body. Figure 2 Which letters in Figure 2 show the lungs, the pancreas and the small intestine? [1 mark] Tick (v) one box. A, DandE A, E and F B, C andD B, C and F Question 2 continues on the next page Turn over > IM IB/M/Jun24/8461/1H iLovePDF Do not write outside the [o[2].[3] The pancreas produces several digestive enzymes. bad CF reduces the amount of each enzyme that reaches the small intestine. Explain why a person with CF has: difficulty digesting food difficulty gaining body mass. [6 marks] IMI IB/M/Jun24/8461/1H iLovePDF 10 Do not write outside the box There are no questions printed on this page DO NOT WRITE/ON THIS PAGE ANSWER IN THE/SPACES PROVIDED IB/M/Jun24/8461/1H iLovePDF 1 Do not write outside the Cake and bread each contain the same two types of carbohydrate. box [o[3}.[1| Describe the chemical tests that could be used to show the presence of the two types of carbohydrate in cake. Include a risk assessment in your answer. [6 marks] Question 3 continues on the next page Turn over > 11 IB/M/Jun24/8461/1H iLovePDF 13 Do not write outside the [o[3].[4| During the investigation, the bread began to taste sweet in the student’s mouth. _ Explain why the bread tasted sweet. [3 marks] [o[3].[5| Suggest one reason why the results of the investigation were not valid. Do not refer to control variables in your answer. [1 mark] 12 Turn over for the next question Turn over > 13 IB/M/Jun24/8461/1H iLovePDF 14 Do not write outside the box There are no questions printed on this page DO NOT WRITE/ON THIS PAGE ANSWER IN THE/SPACES PROVIDED IB/M/Jun24/8461/1H iLovePDF 16 Do not write outside the Figure 3 shows two plant cells. box Figure 3 Phloem cell Cell X [o[4].[4] Name part Y in Figure 3. [1 mark] 16 IB/M/Jun24/8461/1H iLovePDF 17 Do not write outside the [o[4].[5| The phloem tissue transports sugars to other parts of the plant. _ The concentration of dissolved sugars in the phloem cell in Figure 3 is higher than in cell X. Explain how sub-cellular structures help to move dissolved sugars from cell X into the phloem cell. [5 marks] [0 [4].[6| New phloem cells form when unspecialised plant cells differentiate and become specialised. Describe one change in structure that occurs when an unspecialised cell differentiates to form a phloem cell. Use Figure 3. [1 mark] 12 Turn over > IB/M/Jun24/8461/1H 7 iLovePDF 19 [o[5].[2| Explain the result for the potato pieces in the 0.6 mol/dm* salt concentration. [3 marks] result at 0.6 mol/dm?. [0 [5].[3| Explain why the result for the potato pieces at 1.0 mol/dm? was different from the [2 marks] Do not write outside the box Turn over > IB/M/Jun24/8461/1H iLovePDF 20 Do not write outside the This question is about pathogens. box A scientist investigated antibiotic resistance in bacteria. [ol6|.[1| Name one antibiotic. [1 mark] The scientist grew one type of bacterium on agar in a Petri dish. The scientist placed paper discs each containing a different antibiotic on the agar. Figure 5 shows the appearance of the Petri dish after 2 days. Figure 5 Antibiotic C on paper disc Papers Area where bacteria are growing Antibiotic B Antibiotic A on paper disc on paper disc IMU IB/M/Jun24/8461/1H 
