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  1. #1
    Roxanita is offline Senior Member
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    Membrane Transport q2 N*

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    An experiment was conducted to study diffusion across the nerve cell membrane. Electrophysiologic measurements in several different nerve cells were conducted in response to the addition of several different particles.

    Diffusion would most likely be increased by which of the following?

    a) Decreased concentration Gradient
    b) Decreased electrical Gradient
    c) Decreased membrane surface area
    d) Increased membrane thickness
    e) Lipophilic particles

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    Asclepius1 is offline Ultimate Member 537 points
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    Re: Membrane Transport q2 N*

    Quote Originally Posted by Roxanita
    An experiment was conducted to study diffusion across the nerve cell membrane. Electrophysiologic measurements in several different nerve cells were conducted in response to the addition of several different particles.

    Diffusion would most likely be increased by which of the following?

    a) Decreased concentration Gradient
    b) Decreased electrical Gradient
    c) Decreased membrane surface area
    d) Increased membrane thickness
    e) Lipophilic particles
    My educated guess is E.

  3. #3
    Roxanita is offline Senior Member
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    very well educated

    membrane, you know your stuff

    Diffusion Rate depends on many factors some will increase and others will decrease its rate.
    Increase:
    If Concentration Gradient or electrical gradient across the membrane increases
    If Surface of the membrane increases
    If Solubility in the mb or permeability increases

    Decreases:
    If Thicknes of the mb increases
    Molecular weight does not affect that much



    Ref. kaplan Physiology Notes. page 4. Membrane Transport.

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