Bio Lecture 14: Protists
Bio Lecture 14: Protists BIO 209L-001
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This 3 page Class Notes was uploaded by Kiara Reyes on Wednesday September 30, 2015. The Class Notes belongs to BIO 209L-001 at Northern Illinois University taught by Dr. Renee Kopulos in Summer 2015. Since its upload, it has received 24 views. For similar materials see Human Anatomy and Physiology I Lab - SL in Biological Sciences at Northern Illinois University.
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Date Created: 09/30/15
Lecture 14 Protists 1 Eukaryotic leftover Paraphyletic quotKingdomquotl Any eukaryotic that is not a plant animal or fungi Not monophyletic contains some but not all descendant of a common ancestor Eukaryotic that are quotsingle celled or quotmulticellularquot without highly differentiated cell type have mitocandria linear cell 2 Grouping by Energy Protists can be grouped by how they obtain energy If containing chloroplasts so photosynthesize Photoautotrophs like plant If ingest food particles iHeterotrophs like bacteriagt energy around them Mixotrophs iBoth providing stored energy Some protists Brown Algae Exhibit alternation of Generations 2nChromosome in Paris 1n 1 of each chromosome 3 Endosymbionts Some protsits live in close association with endosymbionts other eukaryotes EX wooddigesting protsits digest cellulose in the gut of termites Lichens Algae and Fungi live together or sometimes Cyanobacteria and Fungi Some photosynthesis use light energy and carbon protists are a result of Secondary Endosymbiosis a A 39 Ph WOS fwt rst 39 T we 56 r 41 4 Important Protists Ciliates Cilia Short Eukaryoticgt Flagella hair like substance around the cell Cell engulfs food feeding by cell Phagocytosis eating other cells Micronucleus for sexual reproduction Macronucleus to run cellgt Normal stuff Contractile Vacuole start like shape in the cell Excess water into there then exocytosis expels water to maintain internal cell conditions makes water exit cell Food vacuoles to store food before digestion looks like water drop A protists that has this changeable shape is called an Amoeb plural amoebaegt blob like quotFalse feet Pseudopodia gt cytoplasm pulses out and quotblobquot that way to move Diatoms 2 piece cell wall fits together like a shoe box made of Silico Si02 Dino agellate Spin 1 Flagella 2I101 Flagella as rubber 0 Some live in corals as Endosymbionts live within providing food via photosynthesis If diegt coral bleaching 9 Some bioluminescent give off lights 9 Sometimes part of harmful Algal blooms toxic to sh human manatees negative affect on the environments Plasmodium Transmitted by mosquitos and need human to complete life cycle 0 Challenges in treatment 9 Rapidly involving Organism target membranesproteins 9 Changes its surface protein often 9 Occurs inside cell liver and Red blood cell Algae Red Algae Brown Algae Green Algae Algae means Photosynthetic Aquatic Plant like 0 Are they monophyletre given this phylogeny No Called Seaweeds when multicellular quotleafquot like but some Algae are unicellular EX Kelp Forest Giant Brown Algae Green Algae closest relatives of land plant Oomycetes Most are decomposers like this water model 9 Breaking down dead body hair like brisal around dead body Alsogt Potato Blightgt Potato Famine 9 MoldySmushCan t eat Slime Molds 2 types of slime molds both release spores plasimodial slime mold bag of cytoplasm with 1000 s of nucles Celluar Slime Mold each cell 1 nucleus and feeds by itself But if food shortagegt aggregate and act as on gt send signal to come together to find sources each cell moves towards the cell relasing the most aggregation chemical
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