1. Plasma Membrane
Vocabulary
Ms. Polson - Biology
Name: _________________________________________
Date: _________________________
Period: _________________________
Please select a word from the word bank and match it with its proper definition. Each word will be used only
once. Not all words will be used.
1. ________________________The movement of material out of a cell in which the material
within the cell is enclosed in a membrane-bound sac that moves to the plasma membrane
and unites with it. Releasing the material outside of the cell.
2. _______________________The movement of materials across a membrane through the use
of cellular energy. Usually across a concentration gradient.
3. ________________________Literally means “water-fearing”. Refers to a substance that
does not dissolve in water, such as oil and other lipids.
4. ______________________ Movement of materials across a membrane without the use of
energy. Usually moves from an area of high concentration to an area of lower
concentration.
5. _______________________ The result of inherent kinetic energy; requiring no energy.
6. ________________________ Refers to a solution having a higher concentration of
dissolved particles than the cytoplasm of a cell. (Usually causes water to move out of a cell
into the solution)
7. ________________________ Refers to a solution that has the same concentration as the
cytoplasm of a cell.
8. ________________________ The movement of material into the cell in which the plasma
membrane engulfs extracellular material (material from outside of the cell), forming a
membrane bound sac that enters the cytoplasm.
9. ________________________ Literally meaning “water-loving”. Refers to a substance that
dissolves readily in water, or to parts of a large molecule which forms weak hydrogen bonds
with water.
10. ________________________ A stable internal environment of an organism.
Word Bank:
active transport hydrophobic
endocytosis hypertonic
Exocytosis hypotonic
facilitated diffusion isotonic
homeostasis passive transport
hydrophilic plasma membrane

2. simple diffusion