a. movement of a substance down the

substance’s concentration gradient

b. causes a cell to shrink because of

osmosis

c. movement of a substance by a

vesicle to the outside of a cell

d. an example of a cell membrane “pump”

e. protein used to transport specific

i. concentration of molecules is equal

throughout a space

j. difference in the concentration of

molecules across a space

k. diffusion of water through a

membrane

l. organelle that pumps water out of

the cell

m. passive transport using carrier

proteins

q. organelle that fuses with lysosomes in

order that contents can be digested

Copyright © by Holt, Rinehart and Winston. All rights reserved.

Modern Biology 9 Vocabulary Review

In the space provided, write the letter of the description that best matches the

term or phrase.

______ 1. passive transport

______

2. concentration gradient

______

6. hypertonic solution

______

7. hypotonic solution

______

8. isotonic solution

______

9. ion channel

______

______

______

______

______