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z - BIO103 - Microbiology > Lecture 8 - Slime molds - fungus-like eukaryotes > Flashcards

Lecture 8 - Slime molds - fungus-like eukaryotes Flashcards

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1
Q
  • have both fungal and amoeba-like qualities
  • hunters of bacteria and fungi
  • will produce spores in unfavorable conditions (survival, not reproduction)
A

slime molds

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2
Q

life cycle of cellular slime molds

A
  1. amoeba stage
  2. slug stage
  3. fruiting body
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3
Q

germinate from a spore

A

amoeba stage

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4
Q
  • many amoebas aggregate and sheath forms
  • migration
A

slug stage

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5
Q

releases spores which germinate into amoebas

A

fruiting body

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6
Q

plasmodial (acellular) slime molds

A
  • mass of protoplasm with many nuclei (plasmodium)
  • capable of sexual reproduction
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7
Q

Two phyla of slime molds

A
  1. cellular slime molds
  2. plasmodial slime molds
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8
Q

favorable conditions, cellular slime mold exist as

A

amoeba

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9
Q

unfavorable conditions, cellular slime molds

A
  • congregate and fuse
  • form multicellular mushroom
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10
Q

favorable conditions, plasmodial slime molds exist

A
  • plasmodium
  • giant “amoeba”
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11
Q

plasmodium

A

multi-nucleate mass of protoplasm

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12
Q

unfavorable conditions, plasmodial slime molds

A
  • mold like
  • spread out forming “mycelium
  • produce clump of spores
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13
Q
  • few are human parasites
  • anatomy and life cycle modified for parasitism
  • adult stage in definitive host
  • each larval stage in specific intermediate host
A

helminths (parasitic worms)

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14
Q

helminths phylum

A
  1. Platyhelminthes (flatworms)
  2. Nematoda (roundworms)
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15
Q

class under Phylum Platyhelminthes

A
  1. Trematodes (flukes)
  2. Cestodes (tapeworms)
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16
Q

host of helminths in adult stage

A

definitive host

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17
Q

host of helminths in each larval stage

A

specific intermediate host

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18
Q

Life cycle of helminths

A

Egg –> larva(e) –> adult

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19
Q

two types of helminths reproductive system

A
  1. monoecious
  2. dioceious
20
Q
  • male and female reproductive system in one animal
  • hermaphroditic
A

monoecious

21
Q

separate male and female

A

dioceious

22
Q

shape of platyhelminths

A

dorsoventrally flattened

23
Q

oral and ventral sucker attaches to host tissue

A

trematode or fluke

24
Q

scolex (head), proglottids

A

cestode or tapeworm

25
Q

each segment in the strobila of a tapeworm, containing a complete sexually mature reproductive system

A

proglottids

26
Q

human is a definitive host for

A

Taenia saginata

27
Q

human is an intermediate host for

A

Echinococcus granulosus

28
Q
  • have a complete digestive system
  • eggs infective for humans
A

nematodes

29
Q
  • second most common orm infection in the US (and probably in the Philippines too)
  • most common worldwide
A

Ascariasis

30
Q

causative agent for Ascariasis

A

Ascaris lumbricoides

31
Q
  • most common worm infection in US
  • causes itching around the anus which can lead to difficulty sleeping and restlessness
A

Enterobius vermicularis_

32
Q

Hookworm examples

A
  1. Ancylostoma __duodenale_
  2. Necator americanus
33
Q

caused by eating raw or undercooked meat of

A

Trichinellosis

34
Q

causative agent for Trichinellosis

A

Trichinella spiralis

35
Q

heartworm

A

Dirofilaria immitis

36
Q

cause human hear failure

A

heartworm

37
Q

how does heartworm spread

A

via mosquitoes

38
Q
  • exoskeleton
  • jointed legs
  • segmented body
A

Arthropoda

39
Q

Classes of Arthropoda

A
  1. Insecta
  2. Arachnida
40
Q

6 legs

A

Insecta

41
Q

8 legs

A

Arachnida

42
Q

ex. of insects

A
  • lice
  • fleas
  • mosquitoes
43
Q

ex. of arachnids

A
  • mites
  • ticks
44
Q

arthropods that carry diseases

A

vectors

45
Q

elimination of vectorborne diseases

A

contrl or eradication of vectors

46
Q

how are vectors definitive host

A

microbe’s sexual reproduction in vector

z - BIO103 - Microbiology (18 decks)

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