bacteria + archaea Flashcards

(45 cards)

1
Q

what kind of bonds does archaea have?

A

ether bonds

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2
Q

what kind of bonds do bacteria have?

A

esther bonds

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3
Q

which one shares features with eukaryotes?

A

archaea

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4
Q

domain archaea have what kind of lipids

A

unique membranes

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5
Q

how many phyla do bacteria have?

A

roughly 50

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6
Q

which bacteria or archaea prefers moderate conditions?

A

bacteria

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7
Q

do archaea prefer moderate or harsh conditions?

A

harsh conditions

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8
Q

metabolic features of bacteria are only….

A

half understood

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9
Q

extremophiles

A

can only survive in harsh conditions

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10
Q

horizontal gene transfer

A

movement of one gene to another to increase diversity

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11
Q

cyanobacteria display the most….

A

diversity

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12
Q

what are cyano bacteria necessary in?

A

prodution of organic carbon and nitrogen and oxygen fixing

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13
Q

how many prokaryotic genes have been involved in horizontal gene transfer?

A

80%

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14
Q

what are the similar characteristics of bacteria and archaea

A

small size, rapid growth, and simple cell structure

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15
Q

what is the thykaloid?

A

ingrowths of plasma membranes

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16
Q

what does the thykaloid do?

A

increase surface area for photosynthesis

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17
Q

magnetosomes

A

magnetic crystals that can locate low oxygen habitats

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18
Q

cellular structures can do

A

all sorts of things, like adjust buyoancy

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19
Q

cocci

20
Q

rods

21
Q

comma

22
Q

spiral flexible

23
Q

spiral rigid

24
Q

slimy muciliage

A

secreted from cells

25
what is the slimy muciliage also called?
the cell wall
26
what are the functions of the slimy muciliage
helps evade and hold the colony together
27
cell walls are usually
rigid because it helps maintain shape and defense
28
most archaea use what for cell walls
peptides
29
most bacteria use what for their cell walls
carbs, usually (they can use peptides)
30
Gram negative:
less peptidoglycan, lose purple strain, resists penicillin
31
gram positive
relatively thicker layer, has purple stain, vulnerable to penicillin
32
Motility:
allows cells to move to favorable conditions by following chemical signals
33
Flagella
swimming outward motor, cells can have mutiple in different locations
34
Pilli
Twitch/glide, threadlike structures on cells, used for reproduction
35
Binary Fission is
asexual
36
conjugation is
sexial
37
autotrophs
produce their own organic compounds
38
heterotrophs
organisms that need to eat for organic compounds
39
Obligate aerobes
need oxygen
40
obligate anerobes
can't tolerate oxygen
41
aerotolerant anaerobes
don't use oxygen but not poisoned by it
42
facualtive aerobes
can use both
43
Carbon Cycle:
autotrophs synthesize organic compounds and then are eaten as food
44
Symbiosis
an organism that lives in close association with organisms
45
pathogen
parasitic microbe that causes disease symptoms