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11 Cards in this Set

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Protist
diverse collection of eukaryotic organisms; some are animal-like, plant-like, and fungus-like.
Can be single cell, or simple multi-cellular organisms that do not fit in any other kingdom. some of the oldest eukaryotic cells, 2 billion years ago
endosymbiosis
smaller organism lives in larger organism; hypothesis that protists and other eukaryotes arose from ancient prokaryotes that lived in endosymbosis
classification of protists
is still evolving, but divided by body plan, motility, and nutrition plan
multiple fission
form of cell division that produces more than 2 genetically identical offspring
conjugation
sexual reproduction in which 2 individuals join and exchange genetic material stored in a small second nucleus. cells will then divide and produce 4 offspring which are genetically different from the parent cells.
pseudopodia
large, rounded cytoplasmic extensions that function both in movement and feeding, a form of amoeboid movement, using cytoplasmic streaming
pellicle
found on ciliates, a clear elastic layer of protein that surrounds the cell membrane. Contains funnel-like depression- the oral grove, mouth pore, anal pore, gullet
Algae
autotrophic protists, have chloroplasts,and produce their own carbohydrates by photosynthesis
gametangia
single-celled gamete chambers found in algae
phytoplankton
unicellular algae, free living aquatic organisms, forming the base of nearly all marine and freshwater food chains
thallus
plantlike body portion of a seaweed, its cells are haploid