protists8

protists8 - P ROTIS TS P ROTIS TS COMMON EXAMPLES: Amoeba,...

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PROTISTS
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PROTISTS COMMON EXAMPLES: Amoeba, paramecium, euglena, volvox, plasmodium EUKARYOTIC Have a nuclear membrane VERY DIVERSE GROUP most are unicellular, microscopic, aerobic Some are autotrophic, heterotrophic, sexual, asexual
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PROTISTS ENDOSYMBIONT THEORY Early eukaryotes developed symbiotic relationships with prokaryotic cells Prokaryotic cells lived inside eukaryotic cells Over time, the smaller prokaryotic cells evolved with the eukaryotic cells to become mitochondria and chloroplasts
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PROTISTS EXCRETION AND OSMOREGULATION Water balance = osmoregulation Done by contractile vacuole Wastes removed by diffusion RESPIRATION Carbon dioxide and oxygen diffuse in and out
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PROTISTS REPRODUCTION Asexual Mitosis and cytokinesis Budding – similar to mitosis except daughter cell is smaller than parent Schizogony – nucleus divides many times and cytoplasm divides to form many daughter cells as there are nuclei
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PROTISTS SEXUALLY Meiosis – special nuclear division to reduce chromosome number to haploid Union of gametes = diploid zygote Syngamy – fertilization between two individuals Autogamy – two gametes fuse within one organism Parthenogenesis – development of organism from gamete without fertilization Conjugation – exchange of nuclear material between two individuals
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PROTISTS DOMAIN EUKARYOTA KINGDOM PROTISTA Any eukaryote that is not classified as a fungus, plant, or animal is a PROTIST
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PROTISTS ANIMAL LIKE PROTISTS = PROTOZOA Classified by method of movement PLANT LIKE PROTISTS = ALGAE Classified by pigment color FUNGUS LIKE PROTISTS = MOLDS Classified by body form
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PROTISTS PROTIST CLASSFICATION Separated by feeding habits (nutrition) Autotrophic Able to make own food Photosynthetic – 30-40% of all photosynthesis worldwide is done by algae Heterotrophic Must eat other material Unicellular May be predators, decomposers, or parasites
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PROTISTS PROTOZOA Heterotrophic Unicellular 4 groups Sarcodinians Zooflagellates Ciliophorans Sporozoans
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This note was uploaded on 11/09/2011 for the course BIO 110 taught by Professor Harmon during the Winter '11 term at BYU.

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protists8 - P ROTIS TS P ROTIS TS COMMON EXAMPLES: Amoeba,...

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