A tissue strip has a length of 4.8 × 10-3 m. A damaged region occupies 7.5 × 10-4 m of this length.
The remaining cells have a mean length of 2.7 × 10-5 m and are arranged end to end with no gaps.
Approximately how many cells fit along the remaining region?
1.8×1021.8\times10^{2}1.8×102
2.1×1022.1\times10^{2}2.1×102
1.5×1021.5\times10^{2}1.5×102
2.8×1012.8\times10^{1}2.8×101
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.