1. Protein anions have a charge.  However, they do not move across the membrane to produce changes in RMP.  Why?2. At the molecular level, what causes the absolute refractory period?3. At the molecular level, what is different during the relative refractory period?4. What would happen if Na+ channels opened and stayed open?5. How is stimulus intensity coded in APs?6. What effect does AP frequency have on NT release?

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Asked Oct 14, 2019
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1. Protein anions have a charge.  However, they do not move across the membrane to produce changes in RMP.  Why?

2. At the molecular level, what causes the absolute refractory period?

3. At the molecular level, what is different during the relative refractory period?

4. What would happen if Na+ channels opened and stayed open?

5. How is stimulus intensity coded in APs?

6. What effect does AP frequency have on NT release?

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Transport of uncharged molecules occurs through simple diffusion on the basis of concentration gradient. In the case of charged particles and ions, channel proteins are nee...

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