Obesity is a major lifestyle-related risk factor for several non-communicable diseases, including Type 2 diabetes and coronary heart disease.
Table 1 shows physiological data collected from two participants in a clinical trial monitoring metabolic health.
| Participant | Body mass in kg | Height in m | BMI in kg/m2\text{kg/m}^2kg/m2 |
|---|---|---|---|
| Subject Y | 74 | 1.55 | 30.8 |
| Subject Z | 91 | 1.76 | XXX |
Table 2 shows the clinical classification of Body Mass Index (BMI) and its corresponding risk level for Type 2 diabetes:
| BMI Range (kg/m2\text{kg/m}^2kg/m2) | BMI Category | Relative Risk of Type 2 Diabetes |
|---|---|---|
| Less than 18.5 | Underweight | Low |
| 18.5 to 24.9 | Normal | Average |
| 25.0 to 29.9 | Overweight | Increased |
| 30.0 to 39.9 | Obese | High |
| 40.0 or more | Clinically obese | Very high |
Determine the BMI category of Subject Y.
Calculate the value of XXX for Subject Z. Use the equation:
BMI=body massheight2 \text{BMI} = \frac{\text{body mass}}{\text{height}^2} BMI=height2body massGive your answer to 3 significant figures.
44 exam-style questions on AQA GCSE Biology 2.2 Animal tissues, organs and organ systems, covering 2.2.1 The human digestive system, 2.2.2 The heart and blood vessels, 2.2.3 Blood, 2.2.4 Coronary heart disease: a non-communicable disease, 2.2.5 Health issues, 2.2.6 The effect of lifestyle on some non-communicable diseases, and 2.2.7 Cancer. Each one has a worked solution and a mark scheme showing where the marks go.