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Passive Transport – Transport Across Cell Membranes

by Georgina Cornwall, PhD
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    About the Lecture

    The lecture Passive Transport – Transport Across Cell Membranes by Georgina Cornwall, PhD is from the course Cellular Structure.


    Included Quiz Questions

    1. False
    2. True
    1. Down the concentration gradient with zero energy expenditure
    2. Down the concentration gradient by using one ATP for each molecule transferred
    3. Up the concentration gradient with zero energy expenditure
    4. In either direction and is independent of a concentration gradient
    5. Up the concentration gradient by using one ATP for each molecule moved
    1. The participation of carrier protein molecules or gated channels
    2. The participation of peripheral proteins
    3. The participation of phospholipids molecules
    4. The participation of hydrophobic molecules
    5. The participation of hydrophilic heads of phospholipids
    1. The rate of facilitated diffusion of glucose across the cell membrane is directly dependent on the number of ATP molecules hydrolyzed during movement of glucose molecules
    2. Facilitated diffusion does not utilize any energy during the transfer of the molecules from the exterior of the cell to the cell interior
    3. The conformational changes in the carrier proteins of gated channels lead to opening and closing of the gated channels
    4. The carrier proteins or gated channels provide the selective aqueous passage for the hydrophilic and larger molecules
    5. During facilitated diffusion, the molecules move down their concentration gradients across the cell membrane

    Author of lecture Passive Transport – Transport Across Cell Membranes

     Georgina Cornwall, PhD

    Georgina Cornwall, PhD


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    excelent
    By Juan Diego A. on 30. March 2018 for Passive Transport – Transport Across Cell Membranes

    very good, is complicated, but i understand everything, she is a good teacher

     
    Try to use animations please
    By Tamunotonye T. on 05. February 2018 for Passive Transport – Transport Across Cell Membranes

    couldnt understand a thing. Please try to use animation to explain better