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Reviewer(2B) > Eukaryotic microbes > Flashcards

Eukaryotic microbes Flashcards

1
Q

photosynthetic, eukaryotic organisms
consists of cyctoplasm, a cell wall, cell membrane, nucleus, plastids, ribosomes, mitochond, and golgi bodies
range in size (unicellular microorg. to large, multi-celllular)
arranged in colonies or strands contain

A

Algae

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2
Q

most algal cell walls

A

cellulose

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3
Q

phosynthetic pigments: algae are classsified as

A

green, golden, brown, or red algae

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4
Q

algae are important sources of

A

food
iodine
fertilizers
emulsifiers
stabilizers
and gelling agents

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5
Q

one genus of algae
is a very rare of human infections
causes PROTOTHECOSIS

A

Prototheca

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6
Q

algae in several other genera secrete toxic substances called

A

Phycotoxins

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7
Q

if ingested by humans, phycotoxins produced by the

A

dinoflagellates

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8
Q

RED TIDES can lead to a disease called

A

paralytic shellfish poisoning

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9
Q

paralytic shellfish poisoning SYMPTOMS appear:

A

30-60 minutes after ingesting toxic shellfish

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10
Q

paralytic shellfish poisoning severe cases are associated with INGESTION OF LARGE DOSES OF TOXIN such as:

A

ataxia
dysphagia
mental status changes
flaccid paralysis
respiratory failure

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11
Q

non-photosynthetic, eukaryotic organisms
most unicellular and free living
found in soil and water
animal-like
cannot make their own food

A

Protozoa

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12
Q

protozoa thickened cell wall membrane called

A

Pellicle

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13
Q

some flagellates and ciliates ingest food through a PRIMITIVE MOUTH OR OPENING called

A

Cytostome

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14
Q

2 stages of protozoan cycle and their description

A

Trophozoite- motile, feeding, dividing stage
Cyst- nonmotile, dormant, survival stage

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15
Q

some protozoa are parasites, it cause many human diseases such as

A

malaria
giardiasis
trypanosomiasis

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16
Q

protozoa are divided into groups, based on their method of LOCOMOTION:

A

Amebae- pseudopodia (FALSE FEET)
Ciliates- hair like cilia
Flagellates- whiplike flagella
Sporozoa- no visible locomotion

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17
Q

Amebae example and cause of

A

Entamoeba histolytica, cause of amebic dysentery

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18
Q

Ciliate example and cause of

A

Balantidium coli cause of balantidiasis

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19
Q

Flagellates example and cause of

A

Giardia lamblia cause of giardiasis

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20
Q

Sporozoa example and cause of

A

Plasmodium spp., cause of malaria

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21
Q

study of fungi

A

mycology

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22
Q

fungi represent a diverse group of eukaryotic organisms that include

A

yeasts
moulds
fleshy fungi( e.g., mushrooms)

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23
Q

fungi are the _____ of nature

A

garbage disposers

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24
Q

fungi are not plants, they are

A

NOT PHOTOSYNTHETIC

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25
Q

fungal cell walls contain a polysaccharide called

A

chitin

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26
Q

some fungi are unicellular, others grow as filaments called

A

hyphae

27
Q

hyphae intertwine to form a mass called

A

mycelium

28
Q

some fungi have(septa)

A

septate hyphae

29
Q

some fungi have(do not have septa)

A

aseptate hyphae

30
Q

fungal cells can reproduce by

A

budding

31
Q

2 general categories of spores:

A

sexual spores
asexual spores also called conidia

32
Q

Deutoromycotina or Deuteromycetes include the medically important moulds such as

A

Aspergillus
and yeast such Candida Albicans

33
Q

fungi can live as either yeasts or moulds, depending on growth conditions, this phenomenon is knowns as

A

Dimorphism and fungi are called dimorphic fungi

34
Q

(fungi) grown in vivo at body temp.

A

37 degree celsius
grow as yeasts, produce yeast colonies

35
Q

(fungi) grown in vitro at room temp.

A

25 degree celsius
exist as moulds, produce mould colonies

36
Q

dimorphic fungi that cause human diseases include

A

Histoplasma Capsulatum
Sporothrix Schenkii
Coccidioides Immitis
Blastomyces dermatitidis

37
Q

eukaryotic, unicellular organisms that lack mycelia

A

Yeasts

38
Q

individual yeasts cell also referred to as

A

blastospores
blastoconidia

39
Q

yeasts usually reproduce by ____
but occasionally by a type of ___ ___

A

budding
spore formation

40
Q

a string of elongated buds is known as a

A

pseudohypha(not really a hypha)

41
Q

yeast used in baking

A

Saccharomyces cerevisiae

42
Q

yeast most frequently isolated from human clinical specimens

A

Candida albicans

43
Q

often seen in water and soil growing on food

A

Moulds

44
Q

moulds produce cytoplasmic filaments called

A

hyphae

45
Q

extend above the surface whatever the mould is growing on

A

Aerial hyphae

46
Q

grow beneath the surface

A

Vegetative hyphae

47
Q

Moulds (antibiotic)

A

Penicillium and Cephalosporium

48
Q

grows above the ground forms and releases spores

A

fleshy fungi

49
Q

also called mycoses

A

fungal infections

50
Q

more likely to get a fungal infection if u have a

A

weakened immune system

51
Q

fungi can be difficult to

A

KILL

52
Q

fungal infec. of humans are categorized as

A

superficial
cutaneous
subcutaneous
systemic mycoses

53
Q

fungal infec. of the outermost areas of the human body, hair,nails, and epidermis

A

Superficial mycoses

54
Q

fungal infec. of the living layer of the skin, dermis

A

Cutaneous mycoses

55
Q

groups of moulds collectively referred to as

A

dermatophytes(cause tinea, ringworm)

56
Q

the yeast, can also cause cutaneous, oral, and vaginal infections

A

Candida albicans

57
Q

fungal infec. of the dermis and underlying tissues

A

Subcutaneous mycoses

58
Q

fungal infec. of the internal organs of the body

A

Systemic mycoses

59
Q

cause by fungus Blastomyces dermatitidis found in soil in the eastern and central US

A

Blastomycosis

60
Q

resolves on its own in most people in immmune compromised can cause respiratory failure

A

Pulmonary Blastidiomycosis

61
Q

if desseminate from lungs , can result in wart-like or recessed skin lesions or damage to bones

A

Disseminated Blastidiomycosis

62
Q

Can cause disease Aspergillosis

A

Opportunistic fungal pathogen
species: Aspergillus fumigatus

63
Q

are observed as colored, often circular patches on tree trunks and rocks

A

Lichens

64
Q

are found in soil and on rotting logs

A

Slime moulds

Reviewer(2B) (8 decks)

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