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AHSGE Standard 2

AHSGE Standard 2. Describe cell processes necessary for achieving homeostasis, including active and passive transport, osmosis, diffusion, exocytosis, and endocytosis. Standard 2: Vocabulary. Homeostasis: process of maintaining stable internal environment

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AHSGE Standard 2

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  1. AHSGE Standard 2 Describe cell processes necessary for achieving homeostasis, including active and passive transport, osmosis, diffusion, exocytosis, and endocytosis.

  2. Standard 2: Vocabulary • Homeostasis: process of maintaining stable internal environment • Active transport: energy-requiring process that moves material across a cell membrane • Passive transport: process that moves material across a cell membrane without the use of energy • Osmosis: diffusion of water through a selectively permeable membrane

  3. Diffusion: movement of molecules from area of high concentration to areas of low concentration • Exocytosis: process where cell releases large amounts of a substance. • Endocytosis: process of taking material into the cell through a pocket in the cell membrane. • Isotonic: when two solutions are of the same strength; example- kool-aid • Hypotonic: a diluted solution; watered down tea • Hypertonic: a concentrated solution; example- frozen fruit juice

  4. http://www.youtube.com/watch?v=AYNwynwaALo&feature=player_detailpagehttp://www.youtube.com/watch?v=AYNwynwaALo&feature=player_detailpage

  5. Identify these cells first, then tell whether they are prokaryote or eukaryote.

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