Peripheral membrane proteins

Associated with the internal surface of the membrane

Is the movement of molecules through the membrane in which no energy is required and molecules move in response to a concentration gradient.

Concentration gradient

A difference in concentration of a substance from one location to another, often across a membrane.

is movement of molecules from high concentration to low concentration

Facilitated Diffusion

Diffusion of molecules across a cellular membrane through specific channels from a region of higher concentration to one of lower concentration. Does not require energy from ATP cant go thru membrane easily can go thru proteins

The net diffusion of water across a membrane toward a higher solute concentration

A solution with a higher concentration of solutes than the cell. Tends to lose water by osmosis.

A solution with a lower concentration of solutes than the cell. Tens to take in water by osmosis.

A solution having the same concentration of solutes as the cell. Tends to take in and lose the same amount of water.

Moves substances from low to high concentration and requires energy ATP.

A carrier protein in a cell's membrane that transports only a single type of molecule or ion.

A carrier protein in a cell's membrane that transports two molecules or ions in the same direction across the membrane.

A carrier of protein in a cell's membrane that transports two molecules in opposite directions across the membrane.

Movement of substances into the cell.

Movement of substances out of the cell.

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Biology

Chapter 5 Vocabulary

Question	Answer
Integral membrane proteins	Are embedded in the membrane
Peripheral membrane proteins	Associated with the internal surface of the membrane
Passive Transport	Is the movement of molecules through the membrane in which no energy is required and molecules move in response to a concentration gradient.
Concentration gradient	A difference in concentration of a substance from one location to another, often across a membrane.
Diffusion	is movement of molecules from high concentration to low concentration
Facilitated Diffusion	Diffusion of molecules across a cellular membrane through specific channels from a region of higher concentration to one of lower concentration. Does not require energy from ATP cant go thru membrane easily can go thru proteins
Osmosis	The net diffusion of water across a membrane toward a higher solute concentration
Hypertonic	A solution with a higher concentration of solutes than the cell. Tends to lose water by osmosis.
Hypotonic	A solution with a lower concentration of solutes than the cell. Tens to take in water by osmosis.
Isotonic	A solution having the same concentration of solutes as the cell. Tends to take in and lose the same amount of water.
Active Transport	Moves substances from low to high concentration and requires energy ATP.
Uniporter	A carrier protein in a cell's membrane that transports only a single type of molecule or ion.
Symporter	A carrier protein in a cell's membrane that transports two molecules or ions in the same direction across the membrane.
Antiporter	A carrier of protein in a cell's membrane that transports two molecules in opposite directions across the membrane.
Endocytosis	Movement of substances into the cell.
Exocytosis	Movement of substances out of the cell.

Created by: Caitlin_stafford

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