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Download Actual 2024 AQA GCSE BIOLOGY 8461/1F Paper 1 Foundation Tier Question Paper + Mark Scheme and more Exams Biology in PDF only on Docsity!
AQA= Actual 2024 AQA GCSE BIOLOGY 8461/1F Paper 1 Foundation Tier Question Paper + Mark Scheme Please write clearly in block capitals. Centre number Surname Candidate number Forename(s) Candidate signature | declare this is my own work. GCSE BIOLOGY Foundation Tier Paper 1F Friday 10 May 2024 Morning Time allowed: 1 hour 45 minutes Materials _ For this paper you must have: add Se ulue eS * aruler Question | Mark * ascientific calculator. 7 Instructions 2 e Use black ink or black ball-point pen. 3 « Pencil should only be used for drawing. 4 Fill in the boxes at the top of this page. 5 « Answer all questions in the spaces provided. ¢ 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 8 to be marked. « Inall calculations, show clearly how you work out your answer. TOTAL Information e The maximum mark for this paper is 100. « The marks for questions are shown in brackets. e You are expected to use a calculator where appropriate. « You are reminded of the need for good English and clear presentation in your answers. 611F0O1 8461/1F IB/M/Jun24/E 14 1 Answer all questions in the spaces provided. Plants are made of different tissues. [o[4].[4] Which term describes a group of tissues working together? Tick (“) one box. [1 mark] Organ Organism Organ system Figure 1 shows the tissues in a leaf. Figure 1 a Upper epidermis Palisade mesophyll Spongy mesophyll INI IB/M/Jun24/8461/1F Do not write outside the box Do not write outside the Figure 1 is repeated below. box Figure 1 Light V\\ A \ Upper epidermis Palisade mesophyll Spongy mesophyll [o[1].[5] The upper epidermis is transparent. Explain why the upper epidermis needs to be transparent. Use Figure 1. [2 marks] INI IB/M/Jun24/8461/1F 4 Do not write outside the [6] Complete the sentences. Box Choose answers from the box. [2 marks] chloroplasts guard cells meristems stomata The pores in the lower epidermis of a leaf are called The opening and closing of the pores in the lower epidermis is controlled by Question 1 continues on the next page Turn over > INN IB/M/Jun24/8461/1F 5 Do not write outside the Sugars move from cell Y into cell X against the concentration gradient. box Energy is needed to move sugars against the concentration gradient. [o[1].[38| Which process moves sugars against the concentration gradient? Tick (“) one box. [1 mark] Active transport Diffusion Osmosis [o[1].[9| Which cell structures are needed to provide energy to move sugars? [1 mark] Tick (W) one box. Chloroplasts Chromosomes Mitochondria 12 Turn over for the next question Turn over > 07 IB/M/Jun24/8461/1F 7 [o|2].[4| How does the skin defend the human body against pathogens? 08 Pathogens cause disease. Do not write outside the box [1 mark] The stomach contains acid to kill pathogens. A scientist investigated the effect of acid on the survival of bacteria. This is the method used. 1. Prepare four test tubes each with 10 cm? of culture solution. 2. Use acid to adjust the pH of the solutions to be pH1, pH2, pH3 and pHS 3. Add 1 cm? of bacteria mixture to each test tube. 4. Take a 0.1 cm* sample from each test tube and record the number of live bacteria. 5. Keep the test tubes at 37 °C for 24 hours. 6. Repeat step 4. Table 1 shows some of the results. Table 1 _ oe Number of live bacteria Time in hours | 5H1 | pH2 | pH3 | pHS 0 210 210 210 216 24 23 x 63 185 IB/M/Jun24/8461/1F 8 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 INIA IB/M/Jun24/8461/1F 10 11 Do not write outside the Measles is caused by a virus. ‘box [o[3|.[4] The measles vaccine is given to children to prevent them becoming ill with measles. Draw one line from each blood component to its function when someone is vaccinated against measles. [2 marks] Blood component Function Help clot the blood where the vaccine was injected Platelets Produce antibodies to the measles virus Produce the measles skin rash White blood cells Transport oxygen to the measles virus Question 3 continues on the next page Turn over > 11 IB/M/Jun24/8461/1F 11 13 Do not write outside the [o[3].[2| What year was the measles vaccine first used? box Use Figure 3. [1 mark] [0[3].[3] Describe the trend in the number of people with measles from 1945 to 1975. Use Figure 3. [3 marks] In 1998, a scientific paper was published suggesting a link between condition X and one type of measles vaccine. [o[3].[4] What happened to the percentage of children vaccinated against measles after the scientific paper was published in 1998? Use Figure 3. [1 mark] Question 3 continues on the next page Turn over > 13 IB/M/Jun24/8461/1F 13 14 Do not write outside the [o[3].[5| Why might the claims made in the scientific paper have affected the percentage of box children vaccinated? [1 mark] Tick (“) one box. The measles pathogen did not exist in the UK anymore. Parents were worried their children would get condition X. The health service in the UK did not have any vaccines. [o[3|.[6] In 2010, the scientific paper linking condition X and the measles vaccine was shown to be based on false claims. What should scientists do with scientific research to help detect false claims? [1 mark] Tick (W) one box. Have the research peer reviewed. Publish the research on the intemet. Send a research questionnaire to the public. The person who wrote the scientific paper was paid to research the link between condition X and the measles vaccine. Why are the claims in the scientific paper likely to be considered not valid? [1 mark] 10 1 IB/M/Jun24/8461/1F 14 16 A student investigated three types of bread. For each type of bread, the student: © put a square piece of bread into their mouth ¢ did not chew the bread * recorded the time taken for the bread to taste sweet. Table 2 shows the results. Table 2 Time taken for bread to Type of bread taste sweet in seconds Brown 43 White 35 Wholemeal 57 [2] Complete the sentences. Choose answers from the box. | amylase fat lipase protease [2 marks] sugar The starch in the bread was broken down by the enzyme The enzyme broke down the starch into 16 IB/M/Jun24/8461/1F Do not write outside the box 16 17 Do not write outside the [o[4].[3| What was the independent variable in the investigation? Box [1 mark] Tick (Vv) one box. The size of the piece of bread The temperature of the mouth The type of bread [o[4].[4| Give two conclusions that can be made from the results in Table 2. INIA [2 marks] Question 4 continues on the next page Turn over > IB/M/Jun24/8461/1F 17 19 Do not write outside the [0[4].[6] Calculate value X in Table 3. box [2 marks] X= seconds Why should the student do the investigation with more people? [1 mark] Tick (“) one box. Each person’s sense of taste is different. More people would make the investigation safer. There are many different types of bread. 14 Turn over for the next question Turn over > 9 IB/M/Jun24/8461/1F 19 1 20 Do not write outside the Cancer occurs when there is uncontrolled cell division. bak [o[5|.[1] Which two factors can cause cancer? Tick (“) two boxes. [2 marks] Antibiotics lonising radiation Monoclonal antibodies Salmonella Viruses [o[5|.[2] What type of cell division occurs in cancerous cells? [1 mark] Tick (V) one box. Binary fission Fertilisation Mitosis INA IB/M/Jun24/8461/1F 20 
