Continuity and Change D.10 Natural Selection (id: 453afb3d3)

本题目来源于试卷: Continuity and Change D.10 Natural Selection，类别为 IB生物学

[问答题]
The diagram shows how the eq9 y1lv/tt iuft-nhr,u04 l(lffect of growing bacteria 4ve5y4a y;/ si5oqhcn with different antibiotics can be investigated. A study was conducted to test the degree of antibiotic resistance that bacteria from a hospital door handle had developed. Measurements of the zone of inhibition were taken every 3 days, for hsac4q 5vy4 5ieny; o/15 days.



1.State which antibiotic is the least effective at preventing bacterial growth.

2.State two variables that must be controlled in this experiment, other than those already given.

3.1.Identify the anomalous result from the study.

3.2.Suggest how the anomalous result may have arisen.

4.Explain how natural selection can lead to antibiotic resistance in bacteria.

5.The researchers suggested that vancomycin could be used more extensively to treat bacterial infections. Discuss to what extent you agree with this.

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