Organisms

Organisms - Organisms Organisms Must o Obtain food and...

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Organisms Organisms Must o Obtain food and exchange gases Plants exchange gas through the stomata Plants make their own food Fungi suck up food o Maintain homeostasis, especially water balance Have regulation of their internal medium o Remove waste (metabolic waste in animals = ammonia, urea, uric acid) Nitrogenous: big difficult waste in animals Nitrogen waste is poisonous Plants don’t have nitrogen waste because they don’t eat organisms They make carbohydrates and build up from there o Reproduce Constraints on body structures o Body structures: Organelles, cells, tissues, organs, organ systems o I. Environment Marine (ocean) isotonic: same concentration in two places, usually on the sides of membranes o organisms have the same concentration inside them as the ocean Buoyant: will hold up body more readily than freshwater External fertilization with free swimming larvae o Sperm and egg can exist in the environment and fertilize
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This note was uploaded on 03/26/2008 for the course BIOL 101 taught by Professor Hogan during the Spring '08 term at UNC.

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Organisms - Organisms Organisms Must o Obtain food and...

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