Photo AI
Describe the trend in cases between 2000 and 2010 - Edexcel - GCSE Biology Combined Science - Question 4 - 2016 - Paper 1
Question 4
Describe the trend in cases between 2000 and 2010. People infected with Chlamydia are more likely to be infected with the STI Gonorrhoea. (iii) Explain how people b... show full transcript
Worked Solution & Example Answer:Describe the trend in cases between 2000 and 2010 - Edexcel - GCSE Biology Combined Science - Question 4 - 2016 - Paper 1
Step 1
Describe the trend in cases between 2000 and 2010.
Answer
Between 2000 and 2010, the trend in cases shows a noticeable increase in the incidence of sexually transmitted infections (STIs). This increase may be attributed to various factors, including changes in sexual behavior, increased testing and reporting, and a greater public awareness of STIs leading to more people seeking diagnosis and treatment.
Step 2
Explain how people become infected with both Chlamydia and Gonorrhoea.
Answer
Individuals can become infected with both Chlamydia and Gonorrhoea through unprotected sexual contact with an infected partner. The two STIs often occur together due to similar modes of transmission. Engaging in sexual activities without the use of condoms increases the risk, especially in individuals with multiple sexual partners.
Step 3
Explain how infection with HIV can lead to AIDS.
Answer
HIV (Human Immunodeficiency Virus) attacks the body's immune system, specifically targeting CD4 cells (T cells). Over time, if untreated, HIV reduces the number of these cells, leading to a weakened immune response. Eventually, when the CD4 cell count falls below a critical level, or if certain opportunistic infections occur, the individual is diagnosed with AIDS (Acquired Immunodeficiency Syndrome). In this state, the body is unable to fight off infections and diseases effectively.