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Unformatted text preview: requires ATP. An exchange pump is an active transport mechanism that moves two substances in opposite directions across the cell membrane. • Secondary active-transport uses the power of one substance moving down its concentration gradient to move another substance into the cell. Endocytosis and Exocytosis • Endocytosis is the movement of materials into cells by the formation of a vesicle. Phagocytosis is the movement of solid material into cells by the formation of a vesicle. Pinocytosis is similar to phagocytosis, except that the material ingested is much smaller and is in solution. • Exocytosis is the secretion of materials from cells by vesicle formation. Cell Metabolism • Aerobic respiration requires oxygen and produces carbon dioxide, water, and 36 to 38 ATP molecules from a molecule of glucose. • Anaerobic respiration does not require oxygen and produces lactic acid and two ATP molecules from a molecule of glucose....
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This note was uploaded on 12/04/2011 for the course ANTHRO 2000 taught by Professor Monicaoyola during the Fall '10 term at Broward College.
- Fall '10