L8 * Flashcards

(52 cards)

1
Q

what will happen if you put 1 ml of broth onto a plate

A

it would most likely flood it

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2
Q

what does an antibiotic do

A

selectively kills bacteria when applied to the host, but does not hurt the host

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3
Q

what is bactericidal

A

explodes the cell (lysis)

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4
Q

what does bacteriostatic do

A

prevents growth

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5
Q

what is a mechanism of action

A

target/way it kills

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6
Q

what does a narrow spectrum of activity mean

A

killing of specific stuff

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7
Q

where is the toxic dose line on a graph

A

high up

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8
Q

what a therapeutic index

A

toxic dose/effective dose

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9
Q

whats a natural antibiotic

A

made by some other living thing

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10
Q

whats a semi synthetic antibiotic

A

modified using chemistry to change something specific

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11
Q

what is a synthetic antibiotic

A

only chemistry was used to make this

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12
Q

do synthetic antibiotics require a living thing to make it

A

no

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13
Q

can you reach a level of antibiotic that is bad for you

A

of course

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14
Q

what is an effective dose

A

amount needed to inhibit the bacteria and growth

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15
Q

what is a toxic dose

A

antibiotic that could damage to the host

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16
Q

can some bacteria have a high therapeutic index

A

yes

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17
Q

whats the importance of tasking pills when you are supposed to

A

so you stay at the narrow effective range (therapeutic index)

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18
Q

do bacteria complete with each other? why or why not?

A

yes
to be more evolutionary successful and kill off the things around to maintain nutrients available

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19
Q

what are the two antibiotics in polysporin

A

bacitracin
polymyxin

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20
Q

if an organism is ________ to humans, it is hard to treat

A

similar

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21
Q

what antibiotic works well as a narrow spectrum against mycobacteria

22
Q

are bacteria prokaryotic or eukaryotic

23
Q

is a fungi prokaryotic or eukaryotic

24
Q

how would you target a fungi because they are also prokaryotic?

A

their chitin cell wall

25
what do viruses use to reproduce themselves
host cells
26
why are antiviral antibiotics hard
because they use host cell enzymes, but so do we so there are not many targets for viruses
27
what are some bacterial target (4)
plasma membrane cell wall nucleic acid transcription/translation (different enzymes than humans) bacterias enzymes that they need to live
28
what targets the cell wall
penicillin cephalosporins
29
what do cell wall inhibitors do ? what do they contain
penicillin and cephalosporins will cause cell lysis they contain B-lactam rings
30
what type of bacteria does penicillin work on
against gram +
31
what lysis E coli
ampicillin
32
what do protein synthesis inhibitors do
they cause bacteria static
33
what are some common drugs that are protein synthesis inhibitors
chloramphenicol streptomycin neomycin tetracycline
34
what antibiotic poisons mitochondria
chloramphenicol
35
what antibiotic during pregnancy can lead to deafness in the baby
streptomycin (protein synthesis inhibitor)
36
what antibiotic can affect developing teeth
tetracycline (protein synthesis inhibitor )
37
what antibiotics target the plasma membrane
polymyxins daptomycin
38
when something is in a tube, what is that normally for?
to show that it shouldn't be injected systemically
39
what are the nucleic acid synthesis inhibitors
rifamycin ciprofloxin
40
what kind of inhibitor is rifamycin
inhibits mRNA synthesis
41
what kind of inhibitor is ciproflexin
prevents DNA replication
42
what is a metabolic inhibitor
sulfonamides
43
what does a metabolic inhibitor target
an enzyme that's involved in metabolic activity
44
what was the first widely used antibiotic
sulfonamides
45
how do sulphonamides work
prevent bacteria from making folate
46
no folic acid = __________
no life
47
do we make folic acids
no we need to eat them
48
what tests determine if an antibiotic works against a bacteria (2)
disk diffusion assays epsilomete tests
49
does the size of halos tell us how effective an antibiotic is against a bacteria in sensitivity testing
no - just tells us that it is effective
50
disk diffusion assays
putting paper dipped in antibiotics on a bacteria plate and seeing halos
51
what is an epsilometer test
changing the dose of antibiotics in a gradient and applying it to bacteria
52
what is MIC in an epsilometer test
minimal inhibitory concentration the minimal amount needed to inhibit growth of bacteria