OBJECTIVE LIFE SCIENCE
DIVERSITY AMONG LIFE FORMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A bacterium undergoes a mutation that makes the bacterium resistant to an antibiotic. How might this mutation affect the species of bacteria?
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Bacteria with this mutation would survive, but could not reproduce.
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Bacteria with this mutation would die.
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Bacteria with this mutation would survive and reproduce, making most of the species antibiotic resistant.
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The species could become extinct.
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Explanation:
Detailed explanation-1: -If we were to treat the bacterial population with that specific antibiotic, only the resistant bacteria will be able to multiply; the antibiotic selects for them. These bacteria can now increase in numbers and the end result is a population of mainly resistant bacteria.
Detailed explanation-2: -Antibiotic resistance is a natural occurrence caused by mutations in bacteria’s genes. However, inappropriate use of antibiotics accelerates the emergence and spread of antibiotic-resistant bacteria.
There is 1 question to complete.