A tissue strip is 1.8 mm long. A damaged region occupies 300 μm300\,\mu\mathrm{m}300μm of this length.
The remaining region contains cells with a mean length of 50 μm50\,\mu\mathrm{m}50μm, arranged end to end with no gaps.
Approximately how many cells fit along the remaining region?
6 cells
36 cells
30 cells
42 cells
48 exam-style questions on Edexcel GCSE Biology 1.2 Number, size and scale, covering 1.2.1 Number, size and scale with estimations and 1.2.2 Quantitative units in relation to cells. Each one has a worked solution and a mark scheme showing where the marks go.