biology (bacteria) Flashcards

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1
Q

Prokaryotes

A

unicellular
no nucleus
no membrane bound organelles

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2
Q

Archaebacteria

A

ancient
extreme environments
gram negative
lack peptidoglycan

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3
Q

Eubacteria

A

most bacteria
every environment
gram positive
have peptidoglycan

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4
Q

diseases caused by bacteria

A
botulism
anthrax
cholera
gonorrhoea 
leprosy
pneumonia
strep throat
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5
Q

bacterial infections are treated with ?

A

antibiotics

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6
Q

harmful effects of bacteria

A

food spoil
tooth decay
sour milk
E. coli in hamburger

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7
Q

helpful effects of bacteria

A
making yogurt
make vinegar
making cheese
decompose organic waste
nitrogen fixation
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8
Q

metabolism (energy)

A
Heterotrophs 
-chemoheterotrophs
-photoheterotrophs
Autotrophs
-chemoautotrophs
-photoautotrophs
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9
Q

reparation (releasing energy)

A

obligate aerobe
obligate anaerobes
facultative anaerobes

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10
Q

reproduction

A

asexual (daughter cells) and binary fission (dna replicates)
conjugation (cytoplasmic bridge)
endospore formation(unfavourable conditions, cell shrinks and creates a tough envelope, starts growing in better conditions)

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11
Q

cell wall

A

protection

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12
Q

cell membrane

A

allows certain molecules in and out of the cell

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13
Q

cytoplasm

A

transportation for nutrients and waste

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14
Q

chromatin

A

controls activity in the cell

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15
Q

gel coat

A

prevents the cell from drying out

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16
Q

flagellum

A

movement

17
Q

chlorophyll membrane

A

absorbed light which is used for photosynthesis

18
Q

ribosomes

A

protein synthesis

19
Q

gram positive

A

gram stain purple
have peptidoglycan
eubacteria

20
Q

gram negative

A

gram stain pink
NO peptidoglycan
archaebacteria

21
Q

shapes

A

Cocci (singular: coccus) spherical
Bacilli (singular: bacillus) rod shaped
Spirilla (singular: spirillum)

22
Q

movement

A

DO NOT MOVE
some move using flagellum
some snake or spiral forward
some glide on slime like material

23
Q

antibiotic

A

a chemical used to treat bacterial infections

24
Q

bacteria

A

the smallest and most common microorganisms that lack a nucleus

25
Q

cell membrane

A

the part of the cell responsible for controlling what tenders and exits the bacterium

26
Q

archaebacteria

A

of the 2 bacterial domains, this domain is more closely related to eukaryotes

27
Q

purple

A

bacteria which contain the chemical peptidoglycan in their cell walls stain this colour

28
Q

facultative

A

anaerobes are bacteria that can survive with OR without oxygen

29
Q

gram negative stain this colour

A

pink

30
Q

bacteria that used light for the energy source and use organic carbon for their carbon sources is called?

A

photo heterotrophs

31
Q

bacteria play a major roll in the “fixation” of this gas from the air-into a form which is used by plants

A

nitrogen

32
Q

peptidoglycan is found in ?

A

cell wall