Question

tonicity
is the comparison of relative concentrations of two solutions, separated by a selectively permeable membrane.
always causes cells to burst.
does not have anything to do with solute concentration.
does not affect cells.
always causes cells to shrink.
question 6
chambers a and b are placed next to each other but are separated by a film similar to a cell membrane. chamber a contains 80% carbon dioxide, and chamber b contains 20% carbon dioxide. which of the following will occur?
all of the carbon dioxide will move into chamber b.
some carbon dioxide will move from chamber a to chamber b.
all of the carbon dioxide will move into chamber a.
there will be no net movement of carbon dioxide molecules.
some carbon dioxide will move from chamber b to chamber a.

Explanation:

For the first question, tonicity is defined as the comparison of relative concentrations of two solutions separated by a selectively permeable membrane. The other options are incorrect: it doesn't always cause cells to burst (only in certain hypotonic cases), it is related to solute concentration, and it does affect cells.
For the second question, according to the principle of diffusion (movement from high to low concentration), since Chamber A has a higher concentration of carbon dioxide (80%) than Chamber B (20%), some carbon dioxide will move from chamber A to chamber B. Diffusion leads to an equilibrium, not all moving to one chamber.

Answer:

For the tonicity question: is the comparison of relative concentrations of two solutions, separated by a selectively permeable membrane.
For the chambers question: Some carbon dioxide will move from chamber A to chamber B.