SME
Grade 9 Science · Problem type
How bacteria become resistant to an antibiotic
Use this for “Why does overusing antibiotics lead to resistant bacteria?”
Put in order
Put the steps of natural selection for resistance in order.
1
?
2
?
3
?
4
?
Assumptions
•
Darwin’s points: individuals vary, the variation is inherited, more are born than survive, and survival depends on the variation.
•
Mutations are random: the antibiotic does not cause them, it only selects the ones already there.
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