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Research shows that overweight people may develop Type 2 diabetes - Edexcel - GCSE Biology - Question 2 - 2015 - Paper 1

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Research shows that overweight people may develop Type 2 diabetes. (a) Body Mass Index (BMI) can be used to identify people who are overweight. BMI can be calculat... show full transcript

Worked Solution & Example Answer:Research shows that overweight people may develop Type 2 diabetes - Edexcel - GCSE Biology - Question 2 - 2015 - Paper 1

Step 1

Calculate the BMI for a person who has a mass of 77 kilograms and a height of 1.6 metres.

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Answer

To calculate the BMI, use the formula:

BMI=massheight2BMI = \frac{mass}{height^2}

Here, mass = 77 kg and height = 1.6 m.

Calculating:

BMI=771.6×1.6=772.56≈30.07BMI = \frac{77}{1.6 \times 1.6} = \frac{77}{2.56} \approx 30.07

Thus, the BMI is approximately 30.

Step 2

Describe how the scientific community would validate this research.

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Answer

The scientific community validates research linking high BMI and Type 2 diabetes through several methods:

  1. Peer Review: Research findings are submitted to scientific journals where experts evaluate the methodology and conclusions before publication.

  2. Conferences: Attending scientific conferences allows researchers to present their findings and receive feedback from other scientists in the field, fostering discussion and critique.

  3. Replication Studies: Independent researchers conduct replication studies to verify original findings, ensuring consistency and reliability of the results.

Step 3

Use words from the box to complete the following sentences.

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Answer

Type 2 diabetes develops when a person becomes resistant to the hormone insulin.

This hormone is produced in the pancreas.

Step 4

Describe two ways a person with Type 2 diabetes can control their blood glucose levels without the use of hormones.

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Answer

A person with Type 2 diabetes can manage their blood glucose levels through:

  1. Diet: Carefully regulating or monitoring carbohydrate intake can help control blood sugar levels.

  2. Physical Activity: Engaging in regular exercise helps improve insulin sensitivity and can assist in lowering blood glucose levels.

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