Biology 1406 Chap 7

Last update by garydfreeman on 12/08/2012
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Which membrane protein would be used to move glucose across a membrane from a region of higher concentration to a region of lower concentration?

A) Pump
B) Ion channel
C) Transporter
D) No protein is necessary.


The GLUT-1 transporter assists the diffusion of glucose through the membrane.

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  • garydfreeman
    Which of the following statements is true about the net movement of an ion across a membrane by passive diffusion through a membrane channel?

    The charge on the other side of the membrane is generally the opposite of the ion's charge.
    b) The cell expends energy as the ion passes through the membrane.
    c) For every ion that diffuses through the membrane, a different ion diffuses in the opposite direction.
    d) There is a higher concentration of ions on the side of the membrane toward which the ion diffuses.
Biology 1406 Chap 7
Biology 1406 Chap 7
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