5 (a) Cirrhosis is a disease caused by prolonged alcohol abuse - Edexcel - GCSE Biology Combined Science - Question 5 - 2018 - Paper 1
Question 5
5 (a) Cirrhosis is a disease caused by prolonged alcohol abuse.
(i) Prolonged alcohol abuse causes cirrhosis of the
a. A brain
b. B liver
c. C heart
d. D skin
... show full transcript
Worked Solution & Example Answer:5 (a) Cirrhosis is a disease caused by prolonged alcohol abuse - Edexcel - GCSE Biology Combined Science - Question 5 - 2018 - Paper 1
Step 1
Prolonged alcohol abuse causes cirrhosis of the
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B liver
Step 2
Give one reason why cirrhosis is described as a non-communicable disease.
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Answer
Cirrhosis is caused by lifestyle choices, such as alcohol abuse, and cannot be spread from one person to another.
Step 3
Explain why exercise can cause weight loss.
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Exercise increases energy expenditure, leading to a caloric deficit, which results in weight loss. It also boosts metabolism by building muscle mass.
Step 4
Explain how a gastric band helps a person to lose weight.
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A gastric band limits the amount of food that can be eaten at one time, leading to reduced calorie intake. It also helps individuals feel full sooner, aiding in portion control and weight loss.
Step 5
Calculate the BMI of male B.
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Using the formula:
BMI=(heightinmetres)2massinkilograms
Substituting the values for male B:
BMI=(1.81m)272kg=3.276172≈21.977
Rounding to 3 significant figures, the BMI of male B is 22.0.
Step 6
Explain what the BMI and waist:hip ratio for male A shows about his weight distribution.
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The BMI shows male A is overweight, but his waist:hip ratio indicates he is not abdominally obese, suggesting his weight is more evenly distributed rather than concentrated around the abdomen.
