drugs (topic 15) Flashcards

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1
Q

what are drugs

A

any substance taken into the body that modifies or affects chemical reactions
in the body

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2
Q

antibiotics

A

A medical drug that kills bacteria by interfering with some of their important metabolic reactions.

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3
Q

what are different ways in which an antibiotic can affect a bacteria

A

cause the bacterial cell membrane to break, killing the bacterial cell
prevent bacteria from making new cell walls, so the bacteria cannot reproduce or grow.

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4
Q

do antibiotics affect viruses? why?

A

no they dont, because viruses dont have a cell wall or cell memebrane meaning antiboitcs cant affect them

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5
Q

explain how antibiotic resistence happens

A

a bacteria mutates, becoming resistence to the antibiotic, the bacteria population which isnt resistant die, the mutated bacteria survives and when it reproduces by mitosis it transfers its resistant gene to its offsprings, producing a population of resistent bacteria.

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5
Q

what is antibiotic resistence

A

when a bacteria is no longer affected by the antibiotic

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6
Q

how can you limit the development of resistant bacteria, such as MRSA

A

use antibiotics only when needed, eg. not with viruses, take as prescribed follow whole course of treatment

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