Nervous System Problem Sets

Sodium ions diffuse from outside of teh cell to the inside of the cell through voltage gated channels during an action potential.

True?

If a drug blocks a channel protein on a cel used for K+ diffusion out of a cell, the inside of a cell will become more positive over time.

True

Only water can move freely across a cell membrane without the use of carrier or transport proteins.

False

A solution with a higher solute concentration would also have higher osmolarity.

True

Most water crosses a cells membrane via active transport.

False

Resting membrane potential is something all cells in the body have that is maintained by the Na+/K+ -pump.

True

Which of the following BEST describe osmosis?

Solute particles tend to diffuse from low solute to high solute concentration areas.

True

Only neurons and muscle cells have the ability to change their membrane potentials when stimulated.

Which of the following is NOT and example of passive membrane transport.

When solute concentration is equal on both sides of a human red blood cell membrane, then osmosis of water will NOT occur.

If RBSs are put into a solution with more solutes or “stuff” outside of the cell than inside then the RBCs will shrink or burst?

RBC Shrinks

If lots of K+ leaves the cell does this make the inside of the cell more or less negative.

The Na+/K+-pump moves a net positive charge into the cell?

False?

In osmosis, water will move from regions of high solute concentration to regions of low solute concentration.

True?