Unit 3 Review Study

Front

Potassium is found at a relatively higher concentration in the cytosol or at a relatively higher concentration in the interstitial fluid?

Back

at a relatively higher concentration in the cytosol

Front

sodium

Back

at a relatively higher concentration in the interstitial fluid

Front

chloride

Back

at a relatively higher concentration in the interstitial fluid

Front

calcium

Back

at a relatively higher concentration in the interstitial fluid

Front

Using the information in this table, calculate the concentration gradient for calcium (in mM). Always remember: outside-inside inside: 0.008mM outside: 5mM

Back

4.992 mM

Front

If the concentration of intracellular calcium is changed to 1 mM, what happens to the concentration gradient?

Back

it decreases

Front

Assuming that a cell is permeable to Na, what would happen if the outside concentration of Na changed from 150 mM to 200 mM?

Back

More Na+ ions enter the cell.

Front

By what process is sodium moved out of the cell?

Back

active transport

Front

If ​[K]out is changed to 150 mM, what happens to Ek?

Back

It becomes more positive.

Front

If ​[K]in is changed to 5 mM, what happens to Ek?

Back

It becomes zero.