2023 AQA GCSE COMBINED SCIENCE: SYNERGY 8465/2H Higher Tier Paper 2 Life and Environmental Sciences Question Paper & Mark scheme (Merged) June 2023 [VERIFIED]

2023 AQA GCSE COMBINED SCIENCE: SYNERGY 8465/2H Higher Tier Paper 2 Life and Environmental Sciences Question Paper & Mark scheme (Merged) June 2023 [VERIFIED] GCSE COMBINED SCIENCE: SYNERGY Higher Tier Paper 2 Life and Environmental Sciences Thursday 25 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 For Examiner’s Use Question Mark 1 2 3 4 5 6 7 8 TOTAL 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. (JUN2384652H01) 8465/2H G/KL/Jun23/E6 2 0 1All living organisms are made of cells. Figure 1 shows two types of cell. Figure 1 Cell A Cell B Bacterial cell Liver cell 4.4 micrometres 28.6 micrometres Not to scale 0 1 . 1Calculate how many times longer the liver cell is than the bacterial cell. [2 marks] ___________________________________________________________________________________ ___________________________________________________________________________________ Number of times longer = ____________________________________ Do not write outside the box (02) G/Jun23/8465/2H 3 0 1 . 2 Compare the structure of cell A with the structure of cell B. You should include similarities and differences in your answer. Do not refer to cell size. [4 marks] ___________________________________________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ 0 1 . 3 In multicellular organisms, cells are organised into tissues. What is meant by a ‘tissue’? [1 mark] ___________________________________________________________________________________ ___________________________________________________________________________________ Question 1 continues on the next page Do not write outside the box Turn over 8 (03) G/Jun23/8465/2H 4 A scientist investigated the effect of different concentrations of sugar solution on red blood cells. Figure 2 shows the effect of placing a red blood cell into a sugar solution. Figure 2 Red blood cell before being Red blood cell after being placed in sugar solution placed in sugar solution 0 1 . 4What conclusion can be made from the result in Figure 2? [1 mark] Tick ( ) one box. The sugar solution was less concentrated than inside the cell. The sugar solution was the same concentration as inside the cell. The sugar solution was more concentrated than inside the cell. Do not write outside the box (04) G/Jun23/8465/2H 5 A student investigated the effect of different concentrations of sugar solution on the change in mass of plant tissue. The student used pieces of potato. 0 1 . 5Describe a method the student could