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Do not write in the barcodes. |  |  |  |\n| --- | --- | --- | --- |\n| Centre number |  | Candidate number |  |\n| First name(s)  \u003Cbr>Last name   |  |  |  |\n\nINSTRUCTIONS  \n• Use black ink. You can use an HB pencil, but only for graphs and diagrams.  \n• Write your answer to each question in the space provided. If you need extra space use the lined pages at the end of this booklet. The question numbers must be clearly shown.  \n• Answer all the questions.  \n• Where appropriate, your answer should be supported with working. Marks might be given for using a correct method, even if your answer is wrong.  \nINFORMATION  \n• The total mark for this paper is 60.  \n• The marks for each question are shown in brackets [] .  \n• Quality of extended response will be assessed in questions marked with an asterisk (*) .  \n• This document has 20 pages.  \nADVICE  \n• Read each question carefully before you start your answer.  \n© OCR 2020 [601/8687/2] DC (ST/SW) 187890/8  \nOCR is an exempt Charity  \nTurn over  \n2  \nSECTION A  \nAnswer all the questions.  \nYou should spend a maximum of 20 minutes on this section.  \nWrite your answer to each question in the box provided.  \n1 Table 1.1 shows the classification of non-diabetic, pre-diabetic and type 2 diabetes based on their blood glucose levels.  \n\n| Classification | Blood glucose levels 2 hours after food (mg / dl of blood) | Blood glucose levels 12 hours after food (mg / dl of blood) |\n| --- | --- | --- |\n| non-diabetic | 70–99 | \u003C140 |\n| pre-diabetic | 100–125 | 140–199 |\n| type 2 diabetes | >126 | >200 |\n\nTable 1.1  \nTable 1.2 shows measurements of blood glucose levels taken from 4 people.  \n\n|  | Blood glucose levels 2 hours after food (mg / dl of blood) | Blood glucose levels 12 hours after food (mg / dl of blood) |\n| --- | --- | --- |\n| A | 73 | 140 |\n| B | 100 | 125 |\n| C | 105 | 148 |\n| D | 129 | 206 |\n\nTable 1.2  \nWhich row in Table 1.2 shows a person who is a pre-diabetic?  \nYour answer  \n[1]  \n3  \n2 A student investigates the  \nrate of diffusion using blocks of agar.  \nThe diagram shows  \none of the blocks of agar they use.  \n2 cm  \n2 cm  \n4 cm  \nThe block has a surface area of 40 cm2.  \nWhat is the surface area to volume ratio of this block of agar? A 1 : 2  \nB 1 : 2.5  \nC 2 : 1  \nD 2.5 : 1  \nYour answer  \n[1]  \n© OCR 2020 Turn over  \n4  \n3 A student investigates the rate of photosynthesis.  \nThey collect the gas produced during the reaction in a gas syringe.  \nThe diagrams show the volume of gas in the syringe at the start and after 30 minutes.  \nVolume of gas at start  \nVolume of gas after 30 minutes  \nWhat is the rate of reaction?  \nA 0.7 cm3 /min B 0.9 cm3 /min C 1.4 cm3 /min D 2.1 cm3 /min  \nYour answer  \n[1]  \n5  \n4 The diagram shows cells from a plant.  \nWhat is the function of these cells? A Produce sucrose  \nB Take in water from the soil C Transport sucrose to the roots D Transport water up the stem  \nYour answer  \n[1]  \n5 Which of these statements about proteins is correct?  \nA Proteins are monomers made from polymers called amino acids. B Proteins are polymers made from monomers called amino acids. C Proteins are monomers made from polymers called fatty acids. D Proteins are polymers made from monomers called fatty acids.  \nYour answer  \n[1]  \n© OCR 2020 Turn over  \n6  \n6 What are the product(s) of anaerobic respiration in animals?  \nA Alcohol  \nB Alcohol and carbon dioxide  \nC Lactic acid  \nD Lactic acid and carbon dioxide  \nYour answer  [1]  \n7 The diagram shows a sensory neurone.  \nX  \nWhat is the part labelled X?  \nA Axon  \nB Dendrite  \nC Cell body  \nD Nucleus  \nYour answer  [1]  \n8 Look at the table.  \n\n|  | Glucagon\u003Cbr>released | Insulin\u003Cbr>re","cbCaisChe9nFLENd","https://ap.wps.com/l/cbCaisChe9nFLENd","pdf",3827533,"English","# SECTION A\n## Answer all the questions\n# SECTION B\n## Answer all the questions","[{\"question\":\"What time limit and total marks apply to this paper?\",\"answer\":\"The total mark for the paper is 60, with a total time allowed of 1 hour 10 minutes. Section A allows a maximum of 20 minutes.\"},{\"question\":\"What equipment is required or allowed for answering?\",\"answer\":\"A ruler (cm/mm) is required. A scientific or graphical calculator and an HB pencil are allowed, with the HB pencil only for graphs and diagrams.\"},{\"question\":\"How are answers expected to be presented and marked?\",\"answer\":\"Answers must be written in black ink, and you should write to each question in the space provided. Where appropriate, working should be included, and marks may be awarded for correct methods even if the final answer is wrong.\"}]","GCSE Combined Science (Biology) Paper 7 (Higher Tier) - Question Paper | PDF"]