12 terms

5.5

Section 5.5 Review.
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Terms in this set (...)

Semipermeable Membrane
Only allows certain molecules to pass through it.
Diffusion
The net movement of molecules from an area of high concentration to an area of low concentration.
Concentration Gradient
The difference between the concentration of a particular molecule in one area and the concentration in an adjacent area.
Hypotonic Solution
The concentration of solutes outside is higher than the concentration of solutes inside the cell.
Hypertonic Solution
The concentration of solutes outside is lower than the concentration of solutes inside the cell.
Isotonic Solution
The concentration of the cells inside and outside are equal.
Facilitated Diffusion
The use of carrier proteins for diffusion.
Active Transport
This process is defined as the use of energy to carry molecules across the membrane.
Bulk Transport
In this process, large molecules, food, and other substances are packaged and moved across the membrane.
Energy
Explain how facilitated diffusion and active transport differ. Diffusion is the net movement of molecules while active transport uses ______.
Opposite
Explain how endocytosis and exocytosis differ. Exocytosis is the ______ of endocytosis.
Cell
Explain how pinocytosis differs from phagocytosis. In phagocytosis, the _____ engulfs a food particle instead of a drop of liquid.