OCR Oxford and RSA Tuesday 17 May 2022 - Morning GCSE (9—1) Biology A (Gateway Science) J247/01 Paper 1 (Foundation Tier) Time allowed: 1 hour 45 minutes

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INSTRUCTIONS • Use black ink. You can use an HB pencil, but only for graphs and diagrams. • Write your answer to each question in the space provided. If you need extra space use the lined page... s at the end of this booklet. The question numbers must be clearly shown. • Answer all the questions. • Where appropriate, your answer should be supported with working. Marks might be given for using a correct method, even if your answer is wrong. INFORMATION • The total mark for this paper is 90. • The marks for each question are shown in brackets [ ]. • Quality of extended response will be assessed in questions marked with an asterisk (*). • This document has 28 pages. ADVICE • Read each question carefully before you start your answer. You must have: • a ruler (cm/mm) You can use: • a scientific or graphical calculator • an HB pencil Tuesday 17 May 2022 – Morning GCSE (9–1) Biology A (Gateway Science) J247/01 Paper 1 (Foundation Tier) Time allowed: 1 hour 45 minutes © OCR 2022 [601/8589/2] DC (MB/FC) 300354/7 *8991361833* 2 © OCR 2022 SECTION A Answer all the questions. You should spend a maximum of 30 minutes on this section. Write your answer to each question in the box provided. 1 What does one DNA nucleotide consist of? A A phosphate and sugar backbone B A sugar, a phosphate and a base C Four bases, A, C, T and G D Two different sugars and a base Your answer [1] 2 Which molecule is produced in both aerobic and anaerobic respiration in animals? A ATP B Glucose C Lactic acid D Oxygen Your answer [1] 3 What do electron microscopes have that allow scientists to see cells in greater detail? A A high magnification and a high resolution B A high magnification and a low resolution C A low magnification and a high resolution D A low magnification and a low resolution Your answer [1] 3 © OCR 2022 Turn over 4 Which blood vessels have valves along their length? A Arteries and capillaries B Arteries, veins and capillaries C Capillaries D Veins Your answer [1] 5 When one cell divides by mitosis, how many new cells are produced? A 1 B 2 C 4 D 8 Your answer [1] 6 What word describes the amino acids that join to make a protein molecule? A Enzymes B Monomers C Nucleotides D Polymers Your answer [1] 4 © OCR 2022 7 A student investigates the effect of light intensity on the rate of photosynthesis. They count the number of gas bubbles released by a plant under water. The table shows their results. Light intensity Number of gas bubbles Repeat 1 Repeat 2 Repeat 3 Low 6 7 8 Medium 10 10 11 High 13 19 14 Which number could be classed as anomalous (an outlier)? A 6 B 8 C 11 D 19 Your answer [1] 8 DNA consists of two strands. This is the base sequence found in one strand: ATT Which is the complementary base sequence of the second strand? A ATT B CAG C CGG D TAA Your answer [1] 5 © OCR 2022 Turn over 9 One symptom of diabetes is glucose in the urine. Which biochemical test is used to confirm the presence of glucose in the urine? A Benedict’s B Biuret C Ethanol (emulsion) D Iodine Your answer [1] 10 Visking tubing is made of a selectively permeable membrane. A visking tubing bag containing starch solution is placed in a beaker of water. Visking tubing bag Starch solution Beaker Water What will happen? A Nothing will happen. B Starch will leave the visking tubing bag. C Water will enter the visking tubing bag. D Water will leave the visking tubing bag. Your answer [1] 6 © OCR 2022 11 The diagram shows a red blood cell from a person who has sickle cell anaemia. This condition results in red blood cells that are sickle shaped. People with sickle cell anaemia can feel tired. Which statement about sickle cells explains why? A They contain a nucleus. B They have a smaller surface area. C They have more haemoglobin. D They leave capillaries and enter tissues. Your answer [1] 12 The diagram below shows the distribution of auxin in a shoot. Shoot Left Right Auxin What will happen to the shoot? A The shoot will bend to the left. B The shoot will bend to the right. C The shoot will grow upwards and will not bend. D The shoot will not grow. Your answer [1] 7 © OCR 2022 Turn over 13 The diagram shows the lock and key hypothesis of how enzymes work. B A C D Which letter, A, B, C or D represents the active site of the enzyme? Your answer [1] 14 Which row shows the correct type of reaction for photosynthesis and for respiration? Photosynthesis Respiration Type of Reaction A endothermic endothermic B exothermic exothermic C endothermic exothermic D exothermic endothermic Your answer [1] 8 © OCR 2022 15 The diagram shows a potometer. Narrow tube Tap Water Water 0 1 2 3 4 5 6 7 8 9 10 Gas bubble A student wants to test the hypothesis that the number of stomata on a plant affects water loss. They first record the distance the gas bubble moves in 10 minutes. What should the student do next before taking a second reading to test this hypothesis? A Cover the plant with a black plastic bag. B Remove some of the leaves. C Repeat the test in a warmer room. D Use an electric fan to move the air. Your answer [1] 9 © OCR 2022 Turn over BLANK PAGE PLEASE DO NOT WRITE ON THIS PAGE 10 © OCR 2022 SECTION B Answer all the questions. 16 A student observes the stages of cell division in cells taken from the root tips of garlic. They cut a small amount of root tip and squash it onto a microscope slide. (a) Complete each sentence to describe what they do next. Use words from the list. coverslip eyepiece focus light objective stage stain water To make the chromosomes more visible, the student adds a few drops of ...................... . The slide is then placed on the microscope ...................... . The student first chooses the low power ...................... lens [Show More]

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