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a) Obesity increases the risk of a person developing cardiovascular disease - Edexcel - GCSE Biology - Question 2 - 2018 - Paper 1
Question 2
a) Obesity increases the risk of a person developing cardiovascular disease. Losing weight can reduce the risk of this disease occurring. Explain why exercise can ca... show full transcript
Worked Solution & Example Answer:a) Obesity increases the risk of a person developing cardiovascular disease - Edexcel - GCSE Biology - Question 2 - 2018 - Paper 1
Step 1
Explain why exercise can cause weight loss.
Answer
Exercise plays a significant role in weight loss due to its energy-burning properties. When a person engages in physical activity, their body requires energy to perform the work, which leads to increased calorie expenditure. This process also involves respiration, as the body utilizes stored fat to meet the energy demands. As exercise continues, the body's metabolic rate increases, promoting further fat utilization. Consequently, through consistent exercise, a person can create a calorie deficit, ultimately leading to weight loss.
Step 2
Figure 2 shows a gastric band fitted to a stomach.
Answer
The gastric band serves to limit the volume of the stomach, which directly impacts food intake. By restricting the amount of food that can be consumed, the band effectively reduces hunger and prompts individuals to eat less. As less food is ingested, the body begins to utilize stored fat for energy, promoting weight loss and further aiding in the overall management of obesity.