AQACOMBINED SCIENCE SYNERGY Paper 2 Life and Environmental Sciences MAY 2023

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  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. 8465/2H All living organisms are made of cells. Figure 1 shows two types of cell. Cell A Bacterial cell Figure 1 Cell B Liver cell 4.4 micrometres 28.6 micrometres Not to scale . Calculate how many times longer the liver cell is than the bacterial cell. [2 marks] Number of times longer = . 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]