URGENT PLEASE

The resting potential is generated by
A. K+ ions diffusing into the cell.
B. K+ ions diffusing out of the cell.
C. Na+ ions diffusing into the cell.
D. Na+ ions diffusing out of the cell.

B

Explanation:

Depolarization occurs by the opening of K+ voltage gated channels that cause K+ to leave the cell down a chemical gradient. This makes the inside of the cell less positive until there's reversal of polarity and eventually the resting potential is generated at -70 mV.

This is helped by ATP dependent Na+-K+ pumps.

the right side of the picture going down is:

polymerase

protein

transport vesicle

modified protein

the left side of the picture going down is:

dna helix

single-stranded rna

endoplasmic reticulum

ribosome

golgi apparatus

protein released from vesicle

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