Protists Flashcards
Eukaryotes under protists
Algae
Protozoa
Plant-like protist
Algae
Algae. Uni or Multi?
Both. Some colonial
Algae. Cell wall?
Thin and rigid
Most algae are pathogentic or not?
Non-pathogenic
Algae are found where?
Areas with light and moisture
Occurs in freshwater, salt water, and soil
Algae morpholgy
Flagella
Cell Wall
Plastids
Pigments
Bear photosynthetic pigments
Plastids
Site of CO2 fixation and starch formation
Pyrenoids
Parts for phototaxis
Eyespot
Stigma
Unicellular algae and a model system for photosynthesis
Chlamydomonas
Examples of algae pigments
Chlorophylls
Carotenoids
Phycobilins
Red phycobilin
Phycoerythrobilin
Orange phycobilin
Phycourobilin
Purple phycobilin
Phycoviolobilin
Blue phycobilin
Phycocyanobilin or
Phycobiliverdin
Algae reproduction
Both asexual and sexual
Examples of asexual
Binary fission
Fragmentation
Examples of sexual
Conjugation
- isogamy
- heterogamy
Algae importance
Primary producers - phytoplankton
Fertilizer
Commercial products - eg agar
Source of food/food supplements
Algae criteria for classification
Principal pigments Photosynthetic/storage products Cell wall Mode of motility Mode of reproduction Usual habitat
Know as the first animals
Protozoa
Eukaryotic; Unicellular
Lacks CW but with rigid CM
Motile
Heterotrophic
Protoza
Protozao distribution
Free-living
Symbiotic
Importance of protozoa
Role in economy of nature
- form large part of plankton
Tools in biochemical/molecular structure
Cause human/animal disease
Protozoa vegetative, feeding form
Trophozoite
Protozoa resting stage
Cyst
Protozoa morphology
Cilia Flagella Psuedopodia (false feet) Vacuoles Shells
For water regulation
For digestion
Vacuoles
Plasma membrane where cilia are attached
Pellicle
Area inside ectoplasm that contains most of the organelles
Endoplasm
Semisolid/gelatinous cytoplasm that imparts rigidity to cell
Ectoplasm