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MicroBio > ch12 > Flashcards

ch12 Flashcards

1
Q

– photosynthetic eukaryotes

A

Algae

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2
Q

– saprophytic eukaryotes

A

Fungi

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3
Q

are multicellular disease vector

A

Arthropods

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4
Q
  • nonphotosynthetic eukaryotes
A

Protozoa

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5
Q

multicellular worms

A

Helminths

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6
Q
  1. Use light (and water) for energy to fix CO2 to carbohydrates
  2. Found in both fresh and salt water and soil
  3. Rigid cell wall made mostly of cellulose sometimes with silicon dioxide incorporated (Diatoms)
  4. Can also contain carrageen or agar
A

ALGAE

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7
Q

Some Alage have flagella know as??

A

** (Dinoflagellates)**

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8
Q

Alage microscopic are ______ and

macroscopic are ______

A
  1. unicellular
  2. multicellular
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9
Q
  • numerous algae produce toxins
  • produce neurotoxins
  • form resistant cyst that rest on sea floor
  • eaten by shellfish
  • Toxin accumulates in shellfish tissues
  • Humans eat shellfish and suffer paralytic shellfish poisoning
  • “RED TIDE”
A

Dinoflagellates

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10
Q

Fungi require what for energy and as a carbon source?

A

organic compounds

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11
Q

Most Fungi are aerobic or

A

facultative anaerobe

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12
Q

Fungi
Cell wall contains

A

chitin

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13
Q

Large number of fungi cause disease in plants
Only a few cause disease in humans

But can have huge impact on human

A

Food supply

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14
Q

Fungal Diseases in Humans

in one of four ways

A
  1. Allergic reaction
  2. React to fungal toxin
  3. Mycoses
  4. Economic impact
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15
Q

Result from inhaling fungal spores

A

Allergic reaction

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16
Q

Many have hallucinogenic properties
Certain species produces alflatoxin implicated in cancer

A

React to fungal toxin

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17
Q

Fungi grows on or in the body

A

Mycoses

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18
Q

Economic impact on Fungal Diseases

A

Destroy human food supply causing starvation

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19
Q

Often the Vector of disease

A

Arthropods

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20
Q

Are responsible for transmission of malaria, yellow fever, West Nile virus

A

Mosquitoes

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21
Q

transmit African sleeping sickness

A

Tsetse flies

22
Q

transmit leishmaniasis

A

Sand flies

23
Q

transmit plague

A

Fleas

24
Q

responsible for transmission of Rocky Mountain Spotted Fever and Lyme Disease

A

Ticks

25
Q

responsible for transmission of typhus and trench fever

A

Lice

26
Q

burrow into skin to feed and lay eggs (scabies)

A

Mites

27
Q

Microscopic unicellular organisms that lack photosynthetic capability

Lack cell wall (shape determined by cytoskeleton)

Usually motile

Often have complex life cycle

A

Protozoa

28
Q

Classification of protozoa

A
  1. Subphylum Mastigophora
  2. Subphylum Sarcodina
  3. Phylum Apicomplexa
29
Q

Include flagellated protozoa

A

Subphylum Mastigophora

30
Q

Subphylum Mastigophora

Giardia lamblia causes

A

Girardiasis

31
Q

Subphylum Mastigophora

Leshmanii species cause

A

Leishmaniasis

32
Q

Subphylum Mastigophora

species which cause African sleeping sickness

A

Trypanosoma

33
Q

Subphylum Sarcodina

Move by means of

A

pseudopodia

34
Q

Subphylum Sarcodina

Entamoeba hystolitica produces disease in

A

Humans

35
Q

Cause most serious protozoan disease

A

Phylum Apicomplexa

36
Q

Phylum Apicomplexa

what species causes malaria

A

Plasmodium

37
Q

Phylum Apicomplexa

Toxoplasma gondii causes

A

Toxoplasmosis

38
Q

Malaria

Infected mosquitoe introduces Plasmodium ______into capillary

A

sporozoite

39
Q

Malaria

Sporozoite infects liver cells, producing thousands of

A

** merozoites**

40
Q

Malaria

Merozoites infect

A

red blood cells (RBC)

41
Q

Malaria

Multiply (going through many named stages) and burst RBC, releasing merozoites into blood to re-infect

A

new RBC

42
Q

Malaria

Synchronized cycle of bursting of RBC and “hiding in RBC” leads to bouts of _______&_________

A

fever and feeling well

43
Q

Malaria

Some merozoites develop into_________ that when taken up by a mosquito, invade the mosquito gut

Produce sporozoites that invade ______ glands &
Cycle continues

A
  1. ** gametocytes**
  2. ** salivary **
44
Q

Cause disease by invading host tissues and robbing nutrients

A

Helminthes

45
Q

List and the three major groups of helminths.

A
  1. Nematodes
  2. ** Cestodes (tapeworms)**
  3. ** Trematodes **
46
Q

These Helmithes
Invade gastrointestinal tract and blood stream
E.g., Hookworm and Guinea worm

A

Nematodes

47
Q

These Helmithes

  • Associated with meats like beef or pork
  • Transmission results from consumption of uncooked meat containing cysts
  • Cyst develops into worm in s. intestine – “steals” your nutrients
A

Cestodes (tapeworms)

48
Q

These Helmithes
Found in waters such as lakes and ponds
E.g., Schistosoma mansoni

A

Trematodes

49
Q

Hookworm and Guinea worm invade ________and ______

A

gastrointestinal tract

blood stream

50
Q
A

MicroBio (6 decks)

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