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Micro BIO > Micro lecture 20 > Flashcards

Micro lecture 20 Flashcards

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Biology 101 flashcards
1
Q

Microbial hyperthermophiles grow above 80 degress C True or false

A

true

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2
Q

what are aquificota and thermotogota ?

A

these are phylums that hypertheromophiles

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2
Q

produce water as by product

A

aquifex

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3
Q

Chemlithotrophs that acapture energy by oxidizing hydrogen, thiosulfatre and sulfur with oxygen as a terminal electron acceptor

A

aquifex

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3
Q

what genus are able to grow in marine hydrothermal systems and terrrestrial mineral springs and have outer sheathlike envelope ?

A

Thermotoga

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4
Q

Chemoorganotrophs ?

A

organism that obtains energy from the oxidation of reduced organic compounds

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5
Q

what are the two families that belong to the phylum Deinococcota?

A

Dienococcaceae and thermaceace

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6
Q

Profile for Deinococcus

A

Spherical/rod shape
nonmotile
tertrads
Extremophiles

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7
Q

Which nonproteo gram negative bacteria is notable for resistance to radio activity ?

A

Deinococcaceace

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8
Q

what nonproteobacteria can eat nuclear waste and survive in a vacuum of space ?

A

Dienococcaceace

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9
Q

Contaims T.aquatics

A

Thermales

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10
Q

Which gram negative nonproteobacteria can carry out oxygenic photosynthesis ?

A

Cyanobacteria

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11
Q

Cyanobacteria have the ability to use water as an electron donor, but are unable to fix carbon to generate oxygen?

A

False they can do both

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12
Q

Chloroplast are cyanobacteria? t or f

A

true

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13
Q

Cyanobacteria are unable to enagage in symbiotic relationships with fungi and cannot fix nitrogen? t or false

A

false
they fix nitrogen
and can have symbiotic relationships

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14
Q

Cyanobacteria use chlorophyll,carotenoids, phycobilin and contain thylakoids

A

true

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15
Q

What type of nonproteobacteria contain carboxysomes?

A

cyanobacteria

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16
Q

what are carboxysomes?

A

they are particularly found in cyanobacteria and are comparts that store carbonic anhydrase and Rubisco

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17
Q

What nonproteobacteria employ CO2-concentration mechansims to facilitate high rates of carbon fixation?

A

cyanobacteria

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18
Q

Heterocysts profile

A

specialized cells for Nitrogen fixation
produced when organism is nitrogen is deprived

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19
Q

what is unique about heterocysts cell wall?

A

it prevents the O2 to diffuse into the cell that woul inactivate nitrogenase

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20
Q

how are we able to distinguish between the different prochlorophytes ?

A

we can do this by testign them for the presence of chlorophyll a and b and lack of phycobilins?

21
Q

which cyanobacteria are the only ones to possess chlorophyll b?

A

prochlorophytes

22
Q

found in phylum chlorobiota and are obligate anaerobs, and photolithoautotrophs?

A

Green sulfur bacteria

23
Q

which nonproteobacteria that are gram negative use H2S, elemental sulfur and H2 as electron sources ?

A

green sulfur bacteria

24
Q

What have the ability to perform anoxygenic photosynthesis?

A

green sulfur bacteria

25
Q

describe the bacterial structure of green sulfur bacteria

A

chlorosomes
FMO

25
Q

Green sulfur bacteria are able to produce o2 as a by product? t or f

A

false

26
Q

ellipsoidal vesicles attached to plasma membrane that contain photosynthetic pigments with lipid monolayer are called

A

chlorosomes

27
Q

Once energy is captured in the chlorosomes where is the energy leaded?

A

it goes to the FMO where it then transfers energy to reaction center

28
Q

phylum Chloroflexota are home to that what bacteria?

A

Green non sulfur bacteria

29
Q

What phylum can perform anaerobic ammonium oxidation?

A

Phylum planctomycetes

30
Q

The PVC superphylum stand for ?

A

Verrucomicrobiota
Chlamydiota
Planctomycetota

31
Q

What are anammoxosomes?

A

They belong to planctomycetes and are membrane bound organelle that occupies the cell volume

32
Q

Anammox reaction

A

localized anaerobic ammonia oxidation

33
Q

Obligate intracellular parasites

A

Phylum Chlamydiae

34
Q

what is unique about the cell wall of planctomycetes ?

A

cell wall lacks peptidoglycan

35
Q

How are planctomycetes able to attach to surfaces

A

throuh stalk and hold fast

36
Q

What is the unique reproduction associated with chlamydiae?

A

EB( elementary bodies) attach to host cell and produced RB
RB (reticulate body) reproduce via Binary fission and lysed to release EB

37
Q

Chlamydial are able to catabolize carbohydrates, synthesize ATP or NAD+. T o F

A

False : they cannot do this an must rely on the host ATP

38
Q

What chemoorganotroph bacteria have slender long but flexible helical shape?

A

Spirochaetota

39
Q

What is the periplasmic Flagella?

A

Extend from both end of the cylinder and wrap around PDG in spirochaetota
- Gives the abilit for motiliy with corkscrew like movement

40
Q

Symbiotic association between spirochetes and other organisms can cause diseases like ?

A

lyme disease and Phase variation

41
Q

What nonproteobacteria produces anaerobic non-spore-forming rods

A

bacteroides

42
Q

Can be found in human intestinal tract and animal rumens?

A

Bacteroides

43
Q

How are bacteroides abe to benefit thier host?

A

degrade cellulose,pectins and complex carbohydrates

43
Q

Has the characteristics spindle or football shape that can be obligate/facultative anaerobes and opportunisitc infections….

A

Fusobacteriota

44
Q

what is an opportunistic pathogens?

A

Some can be pathogen when presented with right circumstances

45
Q

SRB stands for ?

A

sulfur reducing bacteria

46
Q

SRBs have what ability ?

A

reduce sulfur and other oxidizing compunds to H2S2

47
Q

Dissimilatroy sulfate reduction?

A

sulfur atoms not incorporated into the biomass

48
Q

Genus Bdellovibrio is aerobic, gram negativeand curved rods with polar flagella

A

true

49
Q

Bdellovibrio is unique in that is preys on other gram negative bacteria

A

true

50
Q

contain complex life cycels that include fruiting bodies and formation of myxospores

A

Myxobacteria

Micro BIO (13 decks)

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