第 1 题
1 分Which statement correctly describes a typical bacterial cell?
GCE O-Level · Biology (6093)
Organisms affecting Human Health：练习题
5 道选择题即时批改，另有 4 道文字题附完整解题步骤，全部围绕「Organisms affecting Human Health」。
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第 2 题
1 分Why are antibiotics effective against bacteria but ineffective against viruses?
第 3 题
1 分Why are viruses described as obligate parasites that can only reproduce inside a living host cell?
第 4 题
1 分A typical virus is structurally different from a bacterial cell. Which of the following is a characteristic feature of a typical virus?
第 5 题
1 分In the context of infectious diseases, which of the following is true regarding pathogens?
第 6 题
2 分State the two primary components that make up a typical virus structure.
先自己写一遍答案，再对照解题步骤。
第 7 题
3 分Antibiotics are designed to be selectively toxic. Explain how the structural differences between human cells and bacterial cells allow antibiotics to eliminate a pathogen like Pneumococcus without harming the patient.
先自己写一遍答案，再对照解题步骤。
第 8 题
6 分Applying the theory of natural selection, describe the process by which a population of bacteria becomes resistant to a specific antibiotic over several generations.
先自己写一遍答案，再对照解题步骤。
第 9 题
5 分Infectious diseases are caused by various pathogens.
(a) Explain the difference between an infectious disease and a non-infectious disease, providing one example of each.
(b) Describe the basic structure of a typical virus and explain why it can only reproduce inside a living host cell.
先自己写一遍答案，再对照解题步骤。
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