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Algae

Campbell Biology Chapter 28

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Chapter 28- Protists Overview: Living Small Protist- the informal name of the group of mostly unicellular eukaryotes Protists constitute a polyphyletic group, and Protista is no longer valid as a kingdom caused by systematics. Molecular data shows there is genetic diversity. Concept 28.1: Most eukaryotes are single celled organisms Protists are eukaryotes most are unicellular, but there are some colonial and multicellular species Protists are the most diverse of the eukaryotes Single celled protists can be very complex, as all biological functions are carried out by organelles in each individual cell don?t see the division of labor like in multicellular eukaryotes, every single cell has all the organelles a protist needs to survive

Biology 10/12 Notes

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Photosynthesis Plants use sun to make glucose Photosynthesisers are base of food chain Too much algae? You got problems Need water Sunlight Nutrients Fertilizer runs into water, increases nutrients, too much algae Too much fish food/waste also does this Dead zone - an area in ocean or lace with scant or little oxygen Increased nutrients Increased algae growth Increased O2 from algae photosynthesis during day At night, respiration decreases O2 Uses up nutrients and die Decomposing bacteria consume/decompose algae Bacteria then blooms Oxygen is decreased even further Anoxic conditions - marine life cannot be supported Organic must have carbon AND hydrogen Chloroplasts - organelles consisting of photosynthetic pigments, enzymes, and other molecules grouped together in membranes

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