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Body Mass Index (BMI) is a way of finding out if a person’s body mass falls within a healthy range for their height - AQA - GCSE Biology - Question 9 - 2021 - Paper 1
Question 9
Body Mass Index (BMI) is a way of finding out if a person’s body mass falls within a healthy range for their height. Table 4 shows information about two people. Ta... show full transcript
Worked Solution & Example Answer:Body Mass Index (BMI) is a way of finding out if a person’s body mass falls within a healthy range for their height - AQA - GCSE Biology - Question 9 - 2021 - Paper 1
Step 1
Step 2
Calculate value X in Table 4.
Answer
To calculate the BMI for person B, we use the equation:
Given:
- Body mass = 92 kg
- Height = 1.71 m
We substitute these values into the equation:
Calculating:
Thus, the value of X for person B is approximately 31.5 kg/m² when rounded to three significant figures.
Step 3
Describe two patterns shown in Table 5 about the effects of BMI category.
Answer
- Higher BMI categories correspond to a lower number of years living in good health.
- Individuals with a higher BMI are more likely to be classified in 'overweight' or 'obese' categories, impacting their overall health outcomes.
Step 4
Explain the financial impact on the UK economy of an increasing number of people who are obese.
Answer
The increase in obesity rates can lead to higher healthcare costs due to increased spending on medical treatments, surgeries, and long-term care for obesity-related diseases. Additionally, the economy may suffer from decreased productivity as more people may require time off work due to health complications.
Step 5
Suggest how arthritis could affect a person’s lifestyle.
Answer
Arthritis can severely limit a person's mobility, making it difficult for them to perform daily activities, engage in physical exercise, or maintain social interactions. This could lead to a more sedentary lifestyle and increased dependency on others for assistance.
Step 6