Module 5: Protozoa Flashcards
1
Q
Basic Characteristics of Protozoa
A
- eukaryotic
- cytoplasm divided into ectoplasm and endoplasm
- lack a cell wall
- outer boundary is a cell cell membrane
2
Q
Ectoplasm
A
- clear outer layer
- locomotion, feeding, and protection
3
Q
Endoplasm
A
- granular inner region
- houses organelles
4
Q
Protozoa Nutrition
A
- dead plants or animal debris
- Parasitic species feed on fluids or tissues of host
5
Q
Protozoa Habitats
A
- require a moist environment
- some are able to withstand extreme conditions
- cyst
6
Q
Cyst
A
- resistant dormant/resting stage
7
Q
Protozoa Classification
A
- amoeboid
- ciliated
- flagellated
- apicomplexan
8
Q
Amoeboid Protozoa
A
- pseudopods
- flowing action
- asexual reproduction
9
Q
Ciliated Protozoa
A
- cilia
- all over body or in patterns
- have defined mouth and feeding organelle
10
Q
Flagellated Protozoa
A
- flagella
- sexual reproduction
11
Q
Apicomplexan
A
- locomotion organells absent
- gliding movement possible
- complex replication
12
Q
What are the two life stages of protozoa?
A
- Trophozoite
- Cyst
13
Q
Trophozoite
A
- motile feeing stage
- requires food and moisture
14
Q
Asexual Reproduction
A
multiple fission
15
Q
Sexual Reproduction
A
conjugation
16
Q
Identification and Cultivation
A
- observed under microscope (shape, size, type, locomotion structures, special organelles)
- with or without stain on slide
- cultivated on artificial media or in laboratory animals
17
Q
Parasitic
A
absorbs nutrients from intestines, blood stream, or tissue
18
Q
What is the most common anti-protozoal treatment?
A
metronidazole - inhibits DNA replication
