A student measures the width of a cell in a photograph. The student also knows the real width of the cell. Which equation should the student use to calculate the magnification of the photograph?
magnification = size of image ×\times× size of real object
magnification = size of image ÷\div÷ size of real object
magnification = size of real object ÷\div÷ size of image
magnification = size of real object ×\times× size of image
163 exam-style questions on AQA GCSE Biology 1.1 Cell structure, covering 1.1.1 Eukaryotes and prokaryotes, 1.1.2 Animal and plant cells, 1.1.3 Cell specialisation, 1.1.4 Cell differentiation, 1.1.5 Microscopy, and 1.1.6 Culturing microorganisms. Each one has a worked solution and a mark scheme showing where the marks go.