Chapter 04 — protozoa Flashcards
1
Q
How can protozoa be classified based on locomotion?
A
- linnaeus (4 classes)
- flagellates (2 groups)
- ciliates
- amoebas (pseudopods)
- apicomplexa — no locomotion (plasmodium)
2
Q
What are the 2 groups of flagellates?
A
- giardia
- trypanosoma
3
Q
Who was the first to describe protozoa & bacteria — and to see flagellar movement?
A
Antoni van Leeuwenhoek
4
Q
What are the 4 types of locomotion for protozoans?
A
- Pseudopods
- Flagella
- Cilia
- None - host driven
5
Q
What are characteristsic of protozoa/protista?
A
- eukaryotic
- unicellular (most of the time)
- vegetative form is trophozoite
- asexual reproduction is by fission, budding, or schizogony
- sexual repro by conjunction
- some produce cyst
6
Q
What are the “old eukaryotes” and their characteristics?
A
Archaezoa — mostly flagellates
- multiple flagella
EX: giardia lamblia and trichomonas vaginalis
7
Q
What are some characteristics of Giardia Lamblia?
A
- trophozoite
- 2 nuclei
- 8 flagella
- kinesosomes
- adhesive disc
- ventral grove
- median bodies
- axonemes
8
Q
What are characteristics & EX of amoebozoa?
A
- move by pseudopods
- Entamoeba
- acanthamoeba
9
Q
What are some characteristics of Ciliates (ciliophora)?
A
- move by cilia
- complex cells
- balantidium coli is the only human parasite
10
Q
what are some characteristics of Euglenozoa?
A
- newer more common flagellates
- photoautotrophs
- Chemoheterotrophs: naegleria, trypanosoma, leishmania
11
Q
slide 13-15
A
12
Q
What are apicomplexa?
A
- group that includes protista & algae
- nonmotile
- intracellular parasites
- complex life cycles
- Plasmodium
- Babesia
- Cryptosporidium
- Toxoplasma
13
Q
What good could malaria be for?
A
- could have been algae
- looks like an aincent algae — protist
- has chloroplast remnant structures
- Apical complex (top of cell) may be a degenerate complex
- instead of photosynthesis now attaches to RBC
- possibly
14
Q
Slide 19-20
A
