Practice Quiz
Diffusion
MULTIPLE CHOICE- Select the answer that best makes the following statements true by putting the letter corresponding to your answer in the space by the statement.
_____1.
Diffusion into a cell can be by:
A. osmosis. C. Both A and B
B. dialysis. D. Neither A nor B
_____2. An aquatic
single cell protists that is 85% water reponds to an environment that is 20%
salt by:
A. losing salts D. A and C
B. increasing in size
C. losing water E. A, B, and C
_____3. Besides
temperature, the rate of diffusion into a cell is affected by:
A. the amount of water D. B and C
B. the conductivity of the cytosol E. A, B, and C
C.
the
concentration gradient of solutes
_____4. A
phosholipid has a nitrogen-phosphate group that is:
A. polar and water soluble
B. non-polar and water soluble D. polar and water insoluble
C. non-polar and water insoluble E. none of these
TRUE-FALSE: Circle either T for TRUE or F for FALSE for the following statements.
T
F 5.
Conductivity is measured in units of centimeters/sec.
T F 6. Diffusion by
passive transport requires no energy expended by the cell
T F 7. Diffusion can not
occur if osmosis is operating.
8. This is a LoggerPro graph of the data you
will collect. Label the dependent and independent axes.
