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GCE JUN 2007 : AS, 14 Understanding Human Physiology

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Centre Number 71 Candidate Number ADVANCED SUBSIDIARY (AS) General Certificate of Education 2007 Health and Social Care assessing Unit 14: Understanding Human Physiology A3H81 Assessment Unit AS 14 [A3H81] THURSDAY 14 JUNE, AFTERNOON TIME 2 hours. INSTRUCTIONS TO CANDIDATES Write your Centre Number and Candidate Number in the spaces provided at the top of this page. Write your answers in the spaces provided in this question paper. Answer all four questions. INFORMATION FOR CANDIDATES The total mark for this paper is 100. Quality of written communication will be assessed in questions 2, 3 and 4. Figures in brackets printed down the right-hand side of pages indicate the marks awarded to each question or part question. For Examiner s use only Question Number 1 2 3 4 Total Marks A3H81S7 2729 Marks 1 (a) The human body cell below has a specialised structure. A B C Source: Anatomy and Physiology, Clancy and McVicar, Arnold. (i) Write down the name of the body system in which this cell is found. Body system _______________________________________ [1] (ii) Explain how the cell s structure aids its function. _____________________________________________________ _____________________________________________________ _____________________________________________________ __________________________________________________ [2] A3H81S7 2729 2 Examiner Only Marks Remark (iii) The cell contains organelles labelled A, B and C. Write down the name and one function of A, B and C. A Examiner Only Marks Remark Name : _______________________________________ [1] Function : __________________________________________ _______________________________________ [1] B Name : _______________________________________ [1] Function : __________________________________________ _______________________________________ [1] C Name : _______________________________________ [1] Function : __________________________________________ _______________________________________ [1] A3H81S7 2729 3 [Turn over (b) This is an enlarged photograph of a blood smear. Examiner Only Marks A B C D Source: Introduction to Advanced Biology, C.J. Clegg, John Murray, 2000. Write down the names and one function of the cells labelled A, B, C and D. A Name : __________________________________________ [1] Function : _____________________________________________ __________________________________________ [1] B Name : __________________________________________ [1] Function: _____________________________________________ __________________________________________ [1] C Name : __________________________________________ [1] Function : _____________________________________________ __________________________________________ [1] D Name : __________________________________________ [1] Function : _____________________________________________ __________________________________________ [1] A3H81S7 2729 4 Remark (c) Write down the name of the cell in the diagram below and explain how its structure is specialised to aid its function. Examiner Only Marks Remark Source: Anatomy and Physiology, Clancy and McVicar, Arnold. Name: ___________________________________________ [1] Explanation: ______________________________________________ ______________________________________________ ______________________________________________ ______________________________________________ ___________________________________________ [2] A3H81S7 2729 5 [Turn over 2 (a) This is a diagram of the ear. F Examiner Only Marks D E C B A Source: CCEA GCSE Biology, McIlwaine and Napier, Hodder Stoughton. (i) Write down the name and one function of parts A and B. A Name : _______________________________________ [1] Function : __________________________________________ _______________________________________ [1] B Name : _______________________________________ [1] Function: __________________________________________ _______________________________________ [1] A3H81S7 2729 6 Remark (ii) Use the diagram to describe how sound is carried from the outer ear to the inner ear via parts C F. Examiner Only Marks Remark _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ __________________________________________________ [3] (b) Explain the cause of the eye defect myopia. _________________________________________________________ _________________________________________________________ _________________________________________________________ ______________________________________________________ [2] A3H81S7 2729 7 [Turn over (c) A volunteer participated in an experiment on the effect of exercise on the volume of urine produced. On each day the total volume of filtrate was 180 dm3. Day 1 No Exercise Day 2 Exercise Part of Nephron Water reabsorbed dm3/day Water reabsorbed dm3/day First convoluted tubule Loops of Henle Second convoluted tubule Collecting ducts 147.5 10.0 19.0 2.5 147.7 10.3 19.1 2.6 (i) Record the volume of urine produced each day. Day 1 ________________________________________________ __________________________________________________ [1] Day 2 ________________________________________________ __________________________________________________ [1] (ii) Explain why the volume of urine differs on the two days. _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ __________________________________________________ [3] A3H81S7 2729 8 Examiner Only Marks Remark (iii) Discuss the mechanism within the body which ensures that water levels are regulated. Examiner Only Marks Remark _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ __________________________________________________ [6] A3H81S7 2729 9 [Turn over (d) This is a diagram of the skin. Examiner Only Marks Source: CCEA GCSE Biology, McIlwaine and Napier, Hodder Stoughton. Flavia, aged three, has been out in the playground at break time. Use the diagram above to discuss the role of the skin in controlling her body temperature. _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ A3H81S7 2729 10 Remark Examiner Only _________________________________________________________ Marks Remark _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ ______________________________________________________ [9] A3H81S7 2729 11 [Turn over 3 (a) One function of the liver is deamination. (i) Describe two other functions of the liver. 1. ___________________________________________________ _____________________________________________________ _____________________________________________________ __________________________________________________ [2] 2. ___________________________________________________ _____________________________________________________ _____________________________________________________ __________________________________________________ [2] (ii) Explain two reasons why deamination in the liver is necessary. 1. ___________________________________________________ _____________________________________________________ _____________________________________________________ __________________________________________________ [2] 2. ___________________________________________________ _____________________________________________________ _____________________________________________________ __________________________________________________ [2] A3H81S7 2729 12 Examiner Only Marks Remark (iii) Identify the four stages in the process of deamination. Examiner Only Marks Remark 1. ___________________________________________________ __________________________________________________ [1] 2. ___________________________________________________ __________________________________________________ [1] 3. ___________________________________________________ __________________________________________________ [1] 4. ___________________________________________________ __________________________________________________ [1] (b) Jacob, aged 60 years, has been diagnosed as having cirrhosis of the liver caused by alcohol abuse. (i) Identify one other common cause of cirrhosis of the liver. __________________________________________________ [1] (ii) Write down two symptoms of cirrhosis which Jacob may have experienced. 1. ___________________________________________________ __________________________________________________ [1] 2. ___________________________________________________ __________________________________________________ [1] A3H81S7 2729 13 [Turn over Jacob lives alone in a housing association flat in Belfast and works as a storeman in a local supermarket. He has no close family nearby. (iii) Analyse the possible impact of cirrhosis on Jacob s life. _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ A3H81S7 2729 14 Examiner Only Marks Remark Examiner Only _____________________________________________________ Marks Remark _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _________________________________________________ [12] A3H81S7 2729 15 [Turn over 4 This is a diagram of the endocrine system. Examiner Only Marks E C D B A Source: Advanced Health and Social Care, Walsh et al. Collins. (a) (i) Identify glands A, B and C and write down the name of one hormone secreted by each of them. A Name : _______________________________________ [1] Hormone : ________________________________________ [1] B Name : _______________________________________ [1] Hormone : _______________________________________ [1] C Name : _______________________________________ [1] Hormone : _______________________________________ [1] A3H81S7 2729 16 Remark (ii) Gland D is the pancreas. Describe both its digestive and its endocrine function. Examiner Only Marks Remark Digestive function _____________________________________________________ _____________________________________________________ _____________________________________________________ __________________________________________________ [2] Endocrine function _____________________________________________________ _____________________________________________________ _____________________________________________________ __________________________________________________ [2] (iii) Explain why gland E, the pituitary gland, is often called the master gland. _____________________________________________________ _____________________________________________________ _____________________________________________________ __________________________________________________ [2] A3H81S7 2729 17 [Turn over (b) (i) Describe two ways in which nervous control and endocrine control of the body differ. 1. ___________________________________________________ _____________________________________________________ _____________________________________________________ __________________________________________________ [2] 2. ___________________________________________________ _____________________________________________________ _____________________________________________________ __________________________________________________ [2] John is a paramedic. Today while on an emergency call a cyclist pulled out in front of him. Fortunately John stopped the ambulance just in time and avoided hitting the cyclist. (ii) Discuss how John s nervous and endocrine systems responded to enable him to stop in time. _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ A3H81S7 2729 18 Examiner Only Marks Remark Examiner Only _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ __________________________________________________ [8] THIS IS THE END OF THE QUESTION PAPER A3H81S7 2729 19 Marks Remark Permission to reproduce all copyright material has been applied for. In some cases, efforts to contact copyright holders may have been unsuccessful and CCEA will be happy to rectify any omissions of acknowledgement in future if notified. SP (NF/CGW) T36580/6

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Additional Info : Gce Health and Social Care June 2007 Assessment Unit AS 14 Unit 14: Understanding Human Physiology
Tags : General Certificate of Education, A Level and AS Level, uk, council for the curriculum examinations and assessment, gce exam papers, gce a level and as level exam papers , gce past questions and answer, gce past question papers, ccea gce past papers, gce ccea past papers

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