OBJECTIVE LIFE SCIENCE
ECOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A bacterial population with no resistance could develop into a bacterial population with some resistance to an antibiotic. Which event could lead to this?
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Antibiotic resistance was inherited from an ancestral population
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An antibiotic resistance plasmid is received from a bacterium in another population
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The enzyme needed for antibiotic resistance is received from a bacterium in another population
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The bacteria have mutated in response to antibiotics in the environment
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Explanation:
Detailed explanation-1: -Analysis of the Transferred Plasmid The plasmid wwA8 contains 45 predicted genes (Table 4), carries three known antibiotic resistance genes, blaCTX-M-15, blaTEM-1, qnrS1, which can be transferred in E. coli in vitro.
Detailed explanation-2: -There are two main ways that bacterial cells can acquire antibiotic resistance. One is through mutations that occur in the DNA of the cell during replication. The other way that bacteria acquire resistance is through horizontal gene transfer.
Detailed explanation-3: -Plasmids can be transferred through direct physical contact between bacteria in a process known as conjugation, which helps bacteria share their antibiotic resistance genes with their neighbors.
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