Ch' 12 Eucaryotic microrganisms

1
Ch. 12 Eucaryotic microrganisms

• Protozoans

2
Free living amoeba
3
Parasitic amoeba pg. 340
4
Protozoans

• 10-1000 ?m
• no bacterial antibiotics
• no cell wall
• 80 S ribosomes
• cysts
• resistance to chemicals
• transmission

5
Protozoans

• Optimal growth 160 -250C
• optimal pH 7.
• Facultative / aerobes
• parasites absorb nutrients
• free living - holozoic eat other microroganisms

6
Protozoans

• Reproduction
• asexual (1 parent)
• fission
• budding
• multiple schizogony
• Sexual (2 parent cells)
• conjugation

7
Conjugation pg. 339
8
Protozoans

• Reproduction
• asexual (1 parent)
• fission
• budding
• multiple schizogony
• Sexual (2 parent cells)
• conjugation
• gametes

9
Classification pg. 344

• Whittaker - Kingdom Protista
• Phylum Sarcomastigophora
• Subphylum Sarcodina (amoebas )

10
Classification pg. 344

• Whittaker - Kingdom Protista
• Phylum Sarcomastigophora
• Subphylum Sarcodina (amoebas )
• pseudopods

11
Free living amoeba
12
Entamoeba histolytica - amoebic dysentary -cysts
- pg. 340
13
Entamoeba histolytica ulcer pg. 678
14
Classification pg. 344

• Whittaker - Kingdom Protista
• Phylum Sarcomastigophora
• Subphylum Sarcodina (amoebas )
• pseudopods
• Subphylum Mastigophora (flagellates)

15
Classification pg. 344

• Whittaker - Kingdom Protista
• Phylum Sarcomastigophora
• Subphylum Sarcodina (amoebas )
• pseudopods
• Subphylum Mastigophora (flagellates)
• flagella

16
Giardia lamblia -giardial enteritis- pg. 678
17
Giardia lamblia - cyst pg. 341
18
Trichomonas vaginalis pg. 341 - no cysts -direct
contact - urethritis, vaginitis
19
Classification pg. 344

• Whittaker - Kingdom Protista
• Phylum Sarcomastigophora
• Subphylum Sarcodina (amoebas )
• pseudopods
• Subphylum Mastigophora (flagellates)
• flagella
• Phylum Ciliophora
• cilia

20
Cilia pg. 342
21
Classification pg. 344

• Whittaker - Kingdom Protista
• Phylum Sarcomastigophora
• Subphylum Sarcodina (amoebas )
• pseudopods
• Subphylum Mastigophora (flagellates)
• flagella
• Phylum Ciliophora
• cilia
• Balantidium coli- dysentary , cysts

22
Balantidium coli
23
Classification pg. 344

• Phylum Apicomplexa - do not move
• Plasmodium - malaria

24
Malaria pg. 343
25
Malaria pg. 343
Female Anopheles mosquito
26
Malaria pg. 343
27
Malaria pg. 343
Chloroquine or primaquine - intercalates with
DNA frameshift mutations
28
Malaria pg. 343
29
Classification pg. 344

• Phylum Apicomplexa - do not move
• Plasmodium - malaria
• Toxoplasma gondii - toxoplasmosis pg. 619

30
(No Transcript)
31
(No Transcript)
32
Transplacental infection- congenital defects

• Stillbirth, abortion, mental retardation