FINAL bacteria Flashcards

(31 cards)

1
Q

class of prokaryotes that live in harsh environments

A

archaebacteria

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2
Q

class of prokaryotes commonly found in our environment

A

eubacteria

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3
Q

bacteria that produce their own food using sunlight

A

photoautotrophs

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4
Q

bacteria that produce their own food using chemicals from the environment

A

chemoautotrophs

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5
Q

organisms that need to eat to survive

A

heterotrophs

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6
Q

what organelles are found in bacteria and what is their function

A

cell wall

ribosome-make proteins

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7
Q

four ways bacteria generate genomic variety

A

mutate, conjugation, transformation, transduction

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8
Q

t/f antibiotics are used for the treatment of fungal infections, viral infection, yeast infections and bacterial infections

A

false

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9
Q

what is the major cause of antibiotic resistance in this country and throughout the world

A

1) overprescription
2) pt compliance
3) agriculture

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10
Q

what cellular structure gives bacteria protection in their unicellular environment

A

cell wall

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11
Q

t/f bacterial dna is located in a membrane bound nucleus

A

false

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12
Q

what is the deadliest bacteria

A

tuberculosis

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13
Q

what bacterial toxin is one of the most deadly toxins

A

botox

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14
Q

name of the disease caused by eating food infected with botox

A

botulism

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15
Q

two benefits of having millions of bacteria in the large intestine

A

digest, produce vitamins:k

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16
Q

what species of bacteria are found in the intestines

17
Q

what antibiotic is considered the last resort in treating bacterial infections

18
Q

what does a gram’s stain test for

A

thickness of the cell wall/peptitoglycan

19
Q

what is the importance of doing a grams stain

A

which antibiotic to use

20
Q

why is it important to fully cook ground beef

A

to kill bacteria

21
Q

what bacteria is responsible for deaths including undercooked meat

22
Q

what organism is responsible for ulcers? how was it proven?

A

h pylori; dr. marshall did tests on himself to prove it

23
Q

what is bacteriophage therapy

A

viruses as drugs

24
Q

what was the greatest limitation in the past to bacteriophage therapy

A

didnt have molecular tools

25
what is quorum sensing
conversation between bacteria
26
what are the four major functions of antibiotics
1) block DNA replication 2) obstruct metabolic processes 3) interfere with protein synthesis 4) interfere with production of bacterial cell wall
27
most pathogenic bacteria are gram
negative
28
LPS
lipopolysacchrides
29
what are the 4 mechanisms pathogens use to infect their host and escape from the innate immune system
1) sugar coating-phagocytic cells cant grow 2) go inside 3) toxins-shut down immune system 4) enzymes-hurt cells
30
what is a commensal
normal bacteria (vs. pathogen)
31
kochs four postulates
1) isolate organism from disease 2) grow in pure culture 3) innoculate test animal and cause same disease 4) isolate from test animal