1 3. In a resting neuron or muscle fiber this gate opens A. Na B. K C. Ca D. C 2

Question

1 3. In a resting neuron or muscle fiber this gate opens A. Na B. K C. Ca D. C 2. And the membrane potential becomes more A. Positive B. Negative C. Neither 3. And the force that moves Na+ when the Na gates open is A. Active transport using ATP B. Diffusion C. Action Potential 4 5. If an Action Potential occurs, this gate opens after the peak of the Action Potential A. Na B. K C. Ca 5. And the membrane potential becomes more A. Positive B. Negative C. Neither 6. To restore the ion balance after an action potential A. Na is pumped out and K is pumped in B. Na is pumped in and K is pumped out C. Na is pumped out and Ca is pumped in D. Na is pumped in and Ca is pumped out

Explanation / Answer

Answer

1-3

1.answer is A & B

here in resting state Voltage channels are closed. The potassium channels are leaky channels and the sodium pumps are also open to maithain the resting potential. it can be justified by Na+ K+ APTase,the protein actively pumps 3 sodium ions out of the cell and 2 potassium ions into the cell.

2. answer is C

The restin membrane potential is -70mV. At reating stage no change in membrane potential.

3. answer A

here in resting stage the opening of nodium channels is active transport using ATP.

Transpotation is takesplace by Na+/K+ ATP ase this enzyme transports of ions using ATP.

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