physioex exercise 1 Cell Transport Mechanisms and Permeability

lmschnoor

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11 years ago

physioex exercise 1 Cell Transport Mechanisms and Permeability

I am trying to figure out in the Facilitated diffusion activity 2, if the diffusion rate of NaCl changes with the number of receptors? Also, what is the mechanism of the NaCl transport?
Thanks Lisa

Source Physioex on the physiologyplace website

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bio_man

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11 years ago

Hi there, hope this helps you out.

1. They are moving with their concentration gradient.

2. The rate of facilitated diffusion increased when the number of carriers was increased.

3. Equilibrium was not reached with 100 membrane carriers and 10mM glucose because the carriers became
saturated and unable to move the glucose across the membrane fast enough.

4. The membrane imbedded carrier in this simulation is only transporting glucose. It is not depending upon the cotransport of Na+Cl–, so the addition of Na+Cl– had no effect.

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lmschnoor Author

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11 years ago

so then, would it be correct to say that the diffusion rate of NaCl does not change with the number of receptors because the receptors are specific to glucose? And I am still not sure what to put for the mechanism of the NaCl transport?

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