Interaction & Interdependence C.7 Defence Against Disease (id: 4044d9674)

本题目来源于试卷: Interaction & Interdependence C.7 Defence Against Disease，类别为 IB生物学

[问答题]
The diagram shows how the effect of growing bacteria with z*bvz/y 82 ts1amu8tt different antibi::m.hx ez c 8)yyt-,:shhovx iotics can be investigated. A study was conducted to test the degree of antib x.hy:tmh)ox:: ,sec-y 8vihziotic resistance that bacteria from a hospital door handle had developed. Measurements of the zone of inhibition were taken every 3 days, for 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.

3.1Identify the anomalous result from the study.

3.2Suggest 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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