第 1 题
1 分During the development of a new antibiotic, why must the drug undergo clinical testing on healthy volunteers before being tested on patients with the disease?
Pearson Edexcel GCSE (9-1) · Combined Science (1SC0)
Health, disease and the development of medicines：练习题
5 道选择题即时批改，另有 3 道文字题附完整解题步骤，全部围绕「Health, disease and the development of medicines」。
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第 2 题
1 分Antibiotics such as penicillin are effective against bacterial infections but have no effect on viral infections like the common cold. Why is this?
第 3 题
1 分A patient has a body mass of \(95\text{ kg}\) and a height of \(1.75\text{ m}\). Calculate their BMI and determine if this lifestyle factor increases their risk of cardiovascular disease based on the BMI scale where \(>30\) is obese.
第 4 题
1 分Which statement best explains why a person with HIV is more likely to develop tuberculosis (TB) compared to a person without HIV?
第 5 题
1 分The specific immune system produces a secondary response if the same pathogen enters the body again. Which cells are responsible for this rapid response, and what do they do?
第 6 题
5 分Explain why antibiotics are effective against bacterial infections like tuberculosis but cannot be used to treat viral infections such as HIV, with reference to cellular processes.
先自己写一遍答案，再对照解题步骤。
第 7 题
6 分Explain how the secondary immune response differs from the primary response upon re-exposure to a pathogen, with specific reference to memory lymphocytes and antibody production levels.
先自己写一遍答案，再对照解题步骤。
第 8 题
4 分Describe the stages of the immune response that occur after a person is immunised with an inactive form of a pathogen. In your answer, explain how memory lymphocytes lead to a faster and stronger secondary response if the person is later exposed to the same live pathogen.
先自己写一遍答案，再对照解题步骤。
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