MEMBRANE TRANSPORT TABLE.docx - Movement Across a Membrane Type of Movement Diffusion Facilitated diffusion Description Substance s Diffusion is the

MEMBRANE TRANSPORT TABLE.docx - Movement Across a Membrane...

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Movement Across a Membrane Type of Movement Description Substance s Energy require d? Part of the membrane involved Other Diffusion Diffusion is the movement of a substance from an area of high concentration to an area of low concentration. Water, carbon dioxide, and oxygen No Phospholipid Bilayer Facilitated diffusion Movement of large or charged molecules via membrane proteins. It moves material along a concentration gradient. (high concentration low concentration) chloride, sodium, calcium, and potassium ions No Protein Channel
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Active transport active transport is the movement of molecules across a membrane from a region of their lower concentration to a region of their higher concentration— against the concentration gradient. Active transport requires cellular energy (ATP) to achieve this movement.
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Unformatted text preview: Glucose, sodium ions, and potassium ions Yes Carrier Protein Endocytosis The process of capturing a substance or particle from outside the cell by engulfing it with the cell membrane, and bringing it into the cell. It is the opposite of Exocytosis. Phagocytos is (Phagocyte s swallowing bacteria) and Pinocytosis (when the plasma membrane folds inward to “swallow” the substance ex. water) Yes Vesicles Exocytosis The process of capturing a substance or particle from outside the cell by engulfing it with the cell membrane, and bringing it into the cell. It is the opposite of Exocytosis. Waste, hormones, proteins, chemical signal messaging and cell to cell communica tion. Yes Vesicles...
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  • Fall '11
  • CarolYeung

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