Question

In order to create the net negative -70mV charge inside the cell membrane of a nerve cell, energy is needed to move Na+ ions out of the cell. This is an example of:

a) Active transport
b) Osmosis
c) Facilitated diffusion
d) Passive transport

Answer 1

The process described is an example of active transport, where energy is needed to move Na+ ions out of the cell membrane of a nerve cell.

Step-by-step explanation:

The process described, where energy is needed to move Na+ ions out of the cell membrane of a nerve cell, is an example of active transport. Active transport is the energy-requiring process of pumping molecules or ions across a cell membrane against their concentration gradient. In this case, energy is used to move Na+ ions from outside the cell to inside the cell, creating a net negative charge of -70mV inside the cell membrane.