3 (a) Chlamydia is caused by a pathogen - Edexcel - GCSE Biology - Question 3 - 2019 - Paper 1
Question 3
3 (a) Chlamydia is caused by a pathogen.
(i) Chlamydia is transmitted by
☐ A insect vectors
☐ B sneezing
☐ C sexual intercourse
☐ D contaminated food
(ii)... show full transcript
Worked Solution & Example Answer:3 (a) Chlamydia is caused by a pathogen - Edexcel - GCSE Biology - Question 3 - 2019 - Paper 1
Step 1
Chlamydia is transmitted by
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Answer
Chlamydia is transmitted primarily through C sexual intercourse.
Step 2
The type of pathogen that causes chlamydia is a
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The type of pathogen that causes chlamydia is A bacterium.
Step 3
Describe the trend in the number of cases of chlamydia between 1996 and 2013.
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Between 1996 and 2013, the number of cases of chlamydia in the United Kingdom showed a general increasing trend. Initially, the cases were relatively low but gradually increased over the years, indicating a rise in chlamydia prevalence during that period.
Step 4
State the number of cases of chlamydia per 100000 in 2013.
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In 2013, there were 1800 cases of chlamydia per 100000 people.
Step 5
Calculate the number of people with chlamydia in 2013.
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Answer
To find the number of people with chlamydia in 2013, we use the formula:
