AQA COMBINED SCIENCE SYNERGY Paper 1 Life and Environmental Sciences

GCSE COMBINED SCIENCE SYNERGY Higher Tier Paper 1 Life and Environmental Sciences Tuesday 16 May 2023 Morning Time allowed: 1 hour 45 minutes Materials For this paper you must have:  a ruler  a protractor  a scientific calculator  the periodic table (enclosed)  the Physics Equations Sheet (enclosed). Instructions  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. Do not write outside the box around each page or on blank pages.  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 to be marked.  In all calculations, show clearly how you work out your answer. Information  The maximum mark for this paper is 100.  The marks for questions are shown in brackets.  You are expected to use a calculator where appropriate.  You are reminded of the need for good English and clear presentation in your answers. 8465/1H This question is about the blood and the circulatory system. . 1 Give the functions of red blood cells, white blood cells and platelets. [3 marks] Red blood cells White blood cells Platelets Figure 1 shows a human heart. Figure 1 B C D A Right atrium . 2 Draw one arrow on Figure 1 to show the movement of the blood between the left atrium and the left ventricle. [1 mark] . 3 Which blood vessel carries blood from the lungs into the heart? Tick () one box. A B C D [1 mark] . 4 Which blood vessel is the