Ap Bio Essay

Submitted By WestRanchAPBio
Words: 302
Pages: 2

protistan
Photoautotroph or heterotroph (or both) unlike bacteria; some like earliest eukaryotic cells. Has a nucleus, larger ribosomes, mitochondria, ER, Golgi bodies, chromosomes with numerous proteins, and cytoskeletal microtubules. Range in size from microscopic algae to giant kelps.
euglenoid
Single-celled, flagellated protistan; photosynthetic but with heterotrophic feeding apparatus (it has phagocytic ancestors).
amoeboid protozoan
A predatory or parasitic protistan that moves by pseudopod formation and cytoplasmic streaming (e.g., an amoeba or a foraminiferan, heliozoan, or radiolarian).
pseudopod
A dynamically extending lobe of cytoplasm used for motility or engulfment.
plankton
Aquatic community of primarily microscopic autotrophs and heterotrophs.
contractile vacuole
Organelle in some protistans; expels excess water.
binary fission
Asexual reproductive mode; the body of protozoans and some other animals divides in two parts. See prokaryotic fission.
conjugation
Prokaryotic gene transfer mode; also protistan sexual reproductive mode.
dinoflagellate
Type of single-celled, flagellated, cellulose-plated protistan. Most are producers of marine phytoplankton; some cause red tides.
algal bloom
Huge increases in aquatic algal population sizes as a result of nutrient enrichments.

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lichen
Symbiotic interaction between a fungus and photoautotroph.
extracellular digestion and absorption
Mode of nutrition…