Bio- Cell Transport Study Guide
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10 Terms
The cell membrane is
a selectively permeable barrier that controls the movement of substances in and out of the cell, maintaining homeostasis.
what is it called when substances can move in and out of the cell
active transport and passive transport
What forms of membrane transport requires energy?
Active transport, endocytosis, and exocytosis.
What forms of membrane transport do not require energy?
Passive transport, diffusion, and facilitated diffusion. osmosis.
what does facilitated diffusion require?
a protein channel (not energy)
EXO-cytosis is when…
molecules move from an area of HIGH concentration to an area of LOW concentration
ENDO-cytosis is when…
molecules move from an area of LOW concentration to an area of HIGH concentration
Cell membrane is a ____ - like membrane
FLUID
Active Transport:
the movement of molecules from an area of LOW concentration to an area of HIGH concentration
Diffusion
when molecules move from an area of HIGH concentration to an area of LOW concentration.
Note 
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