Use Figure 7 to calculate the percentage of maximum growth this type of tumour reaches before it can be removed - AQA - A-Level Biology - Question 6 - 2019 - Paper 3

To calculate the percentage of maximum tumour growth, we first need to identify the maximum growth level indicated in Figure 7. Based on the graph, the maximum size the tumour reaches is approximately 10 units.

To find the percentage growth, we can use: $ext{Percentage Growth} = \left( \frac{\text{Current Size}}{\text{Maximum Size}} \right) \times 100$ Assuming the current size before removal is around 4.7 units:

$\text{Percentage Growth} = \left( \frac{4.7}{10} \right) \times 100 = 47\%$

Thus, the percentage of maximum growth that this type of tumour reaches before it can be removed is approximately 47%.