BIO 1140 Study Guide - Final Guide: Lipid Bilayer, Passive Transport, Exocytosis
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___________________________________________________: circle the statements below that would be true about simple diffusion. It is a form of passive transport: molecules travel with the concentration gradient. It is how glucose travels across the cell membrane. It is how oxygen and carbon dioxide travel across the membrane: this transport is typical for large molecules. Moving with the concentration gradient: moving with the flow (i. e. going with the concentration gradient) is the direction of flow in passive transport. Show this in the diagram on right by drawing in 10 total circles (to represent molecules). You must decide a certain amount to place on the left vs. the right side after viewing the arrow indicating the direction of movement. Label the high concentration side and low concentration side. _____________________________________________: give a scenario where a cell may need to perform a form of endocytosis. ________________________________________________________________________________________________________: give a scenario where a cell may need to perform a form of exocytosis.