Scientists collected data about adults in one country.
The Table shows the percentage of adults in each BMI group who had type 2 diabetes.
Table
| BMI group | Number of adults studied | Percentage of adults with type 2 diabetes |
|---|---|---|
| 18.5 to 24.9 | 12 000 | 2.5 |
| 25.0 to 29.9 | 15 000 | 5.0 |
| 30.0 to 34.9 | 8 000 | 10.0 |
| 35.0 and above | 4 000 | 18.0 |
Calculate the number of adults in the 30.0 to 34.9 BMI group who had type 2 diabetes.
Describe the correlation shown by the data in the Table.
A student concluded that a high BMI causes type 2 diabetes. Explain why the data in the Table do not prove this.
Explain the cause of type 2 diabetes.
45 exam-style questions on Edexcel GCSE Biology 7.4 Blood glucose and the urinary system, covering 7.4.1 Insulin and blood glucose control, 7.4.2 Glucagon and blood glucose regulation, 7.4.3 Type 1 and type 2 diabetes, 7.4.4 Structure of the urinary system, 7.4.5 Structure and function of the nephron, 7.4.6 ADH and water regulation, 7.4.7 Treatments for kidney failure, and 7.4.8 Production of urea in the liver. Each one has a worked solution and a mark scheme showing where the marks go.