HIV (Human Immunodeficiency Virus) is a pathogen - AQA - GCSE Biology - Question 1 - 2010 - Paper 1
Question 1
HIV (Human Immunodeficiency Virus) is a pathogen.
How is HIV spread from one person to another?
Tick (✓) one box.
Coughing
Sexual intercourse
Touching door hand... show full transcript
Worked Solution & Example Answer:HIV (Human Immunodeficiency Virus) is a pathogen - AQA - GCSE Biology - Question 1 - 2010 - Paper 1
Step 1
How is HIV spread from one person to another?
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Answer
The correct way in which HIV is spread from one person to another is through Sexual intercourse.
Step 2
Describe what happened to the number of new cases of HIV from 2010 to 2018.
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Answer
The number of new cases of HIV initially increased (at first) from 2642 in 2010 to 2767 in 2014. However, by 2018, the cases decreased to 1530.
Step 3
What could cause a decrease in the number of new HIV cases in the future?
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Answer
The factor that could cause a decrease in the number of new HIV cases in the future is Better education on how to prevent the spread of HIV.
Step 4
How could a vaccine work to prevent a person being infected with HIV?
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Answer
The correct order of stages is:
C - An inactive form of the virus is injected into the body.
E - White blood cells produce antibodies to the inactive virus.
A - Antibodies attach to the inactive virus.
B - Antibodies destroy the inactive virus.
D - If the active virus enters the body, antibodies are produced quickly.
Step 5
What is the next stage in testing the vaccine?
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Answer
The next stage in testing the vaccine is Testing on healthy volunteers.
Step 6
Why is it difficult to develop safe drugs to destroy viruses?
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Answer
It is difficult to develop safe drugs to destroy viruses because Drugs that destroy viruses also damage body tissues.
Step 7
Draw one line from each drug to the plant the drug originated from.
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