From the following options (a, b, c), choose the corresponding letter that best

Question

From the following options (a, b, c), choose the corresponding letter that best describes the response to the indicated change.

a) increased

b) unchanged

c) decreased

1. Chloride flow through CFTR, with 2 ATP bound at the NBDs, upon activation of PKA

2. Sodium/potassium pump activitiy in response to depolarization of a 1 um3 patch of axon membrane for 100 msec

3. Potassium ion flow across a membrane patch containing a sodium channel in response to depolarization

4. Amplitude of an evoked synaptic potential when extracellular sodium concentration is increased by 2X

5. Response of a muscle cell to direct ACh application, in a rabbit that had eel AChRs injected into it

6. Expansion of Mucins, after secretion from exocrine glands, when Cl- concentration in the duct fluid is normal

7. Movement of charges in S4 (Segment 4) of the sodium channel protein's transmembrane domains during the rising phase of a depolarizing voltage step applied to the membrane

8. Frequency of asynchrous, spontaneous miniature synaptic potentials in the presence of TTX

Explanation / Answer

1.a.increased.

2.c.decreased.

3.a.increased.

4.a.increased.

5. into multiple paraspinal sites and a.increased.

6.a.increased(by 19%)

7.b.unchanged.

8.a.increased

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