Different types of human cell contain different numbers of mitochondria.
The table shows the mean number of mitochondria in three types of human cell.
Table: Mean number of mitochondria in three types of human cell
| Type of cell | Mean number of mitochondria per cell |
|---|---|
| Skin cell | 200 |
| Liver cell | 1000 |
| Heart muscle cell | 5000 |
Calculate the ratio of the mean number of mitochondria in a skin cell to the mean number in a heart muscle cell.
Give your answer in the form 1 : n
Ratio = 1 : _____
Suggest an explanation for the difference between the skin cell and the heart muscle cell shown in Table 2.
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.