3. (a) Which is the reason why obesity is a non-communicable disease?
A it is spread from person to person
B it is caused by a virus
C it is not spread from person to person
D it lasts for a short time
(b) Several factors affect the risk of developing cardiovascular disease - Edexcel - GCSE Biology Combined Science - Question 3 - 2023 - Paper 1
Question 3
3. (a) Which is the reason why obesity is a non-communicable disease?
A it is spread from person to person
B it is caused by a virus
C it is not sprea... show full transcript
Worked Solution & Example Answer:3. (a) Which is the reason why obesity is a non-communicable disease?
A it is spread from person to person
B it is caused by a virus
C it is not spread from person to person
D it lasts for a short time
(b) Several factors affect the risk of developing cardiovascular disease - Edexcel - GCSE Biology Combined Science - Question 3 - 2023 - Paper 1
Step 1
Which is the reason why obesity is a non-communicable disease?
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Answer
The correct answer is C: it is not spread from person to person. Non-communicable diseases, such as obesity, are not transmitted between individuals and are instead influenced by lifestyle, genetics, and environmental factors.
Step 2
A person has a BMI of 39.0. Explain the risk of this person developing cardiovascular disease.
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Answer
A person with a BMI of 39.0 falls into the 'obese' category. This level of obesity is associated with a higher risk of developing cardiovascular disease due to factors such as increased blood pressure, elevated cholesterol levels, and increased strain on the heart. Obesity contributes to inflammation and insulin resistance, further heightening cardiovascular risks.
Step 3
State two other treatments for cardiovascular disease.
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Answer
Medication (e.g., statins to lower cholesterol levels)
Surgical procedures (e.g., heart bypass surgery or angioplasty)
Step 4
State the trend shown in the graph from 2011 to 2019.
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Answer
The trend shown in the graph indicates a decline in the percentage of people smoking cigarettes from 2011 to 2019.
Step 5
Give two reasons for this change in the number of people smoking cigarettes.
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Answer
Increased public awareness about the health risks associated with smoking.
Implementation of stricter regulations regarding tobacco advertising and sales.
Step 6
Draw a line on Figure 7 to show the likely trend in the percentage of people smoking cigarettes from 2019 to 2041.
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Answer
The line should continue the downward trend observed from 2011 to 2019, indicating a further decline in the percentage of smokers.
Step 7
Which is the description of cancer?
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Answer
The correct answer is B: uncontrolled cell division. Cancer is characterized by the abnormal growth and division of cells, which can form tumors and invade surrounding tissues.
