Bio Notes - 11/5

Algae

refers to many phyla of protists that carry out photosynthesis

Ulva

Multicellular green algae

colony

loose association of independent cells

Volvox colony

• A hollow sphere

• Thousands of cells arranged in a single layer surrounding a watery interior

Pigments

• Chlorophylls a and c

• Fucoxanthin (a type of carotinoid pigment) gives them their color

Diatoms

the most numerous unicellular algae in the oceans

Diatomaceous earth used as

• Filtering agents

• Sound-proofing materials

• Polishing abrasives

ZOOFLAGELLATES, diseases

• Trypanosoma

• Giardia lamblia

• Trichomonas vaginalis

Amoeboids

• are protists that move and ingest their food with pseudopods

• use phagolysosomes to digest food

Plasmodial Slime Molds - Phylum Myxomycota

Body in the form of a plasmodium

Cellular Slime Mold - Phylum Acrasiomycota

Body in the form of individual amoeboid cells

Morphology of protista

• Most are unicellular, not all

• Many with amazingly high level of structural and functional complexity

Kingdom Protista

• Complexity and diversity of protists makes them difficult to classify

• Could be split into as many as a dozen kingdoms

Agar

capsules; dental impressions; cosmetics; culture medium; electrophoresis; food prep

Carrageen

an emulsifying agent used in chocolate, low-fat foods, & cosmetics

Porphyra blades

processed, reddish-black wrappings around sushi rolls

laminarin

Excess food stored as a carbohydrate called

phytoplankton

• Cell wall

• Diatomaceous earth used as