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Vocabulary Review. Homeostasis and Cell Transport. The movement of substances across a cell membrane without any input of energy. Passive Transport. The movement of molecules from an area of higher concentration to an area of lower concentration. Diffusion.

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vocabulary review

Vocabulary Review

Homeostasis and

Cell Transport

the movement of molecules from an area of higher concentration to an area of lower concentration
The movement of molecules from an area of higher concentration to an area of lower concentration

Diffusion

slide7
Concentration of solute molecules outside the cell is LOWER than in the cytosol; water diffuses into the cell

Hypotonic

slide8
Concentration of solute molecules outside the cell is HIGHER than in the cytosol; water diffuses out of the cell

Hypertonic

the shrinking of a cell due to water s moving out the cell when placed in a hypertonic environment
The shrinking of a cell due to water’s moving out the cell when placed in a hypertonic environment

Plasmolysis

slide13
The swelling and eventual bursting of a cell as water moves into it when placed in a hypotonic environment

Cytolysis

the movement of substances across a cell membrane with the assistance of protein carriers
The movement of substances across a cell membrane with the assistance of protein carriers

Facilitated Diffusion

slide15
The proteins that move certain molecules into the cell that cannot readily diffuse through the cell membrane

Carrier Proteins

a complex of protein molecules in a cell membrane that form a pore through which ions can pass
A complex of protein molecules in a cell membrane that form a pore through which ions can pass

Ion Channels

slide17
The movement of chemical substances, usually across the cell membrane, against a concentration gradient; requires energy

Active Transport

slide18
A carrier protein that uses ATP to actively transport sodium ions out of a cell and potassium ions into the cell

Sodium-Potassium Pump

slide19
The process by which a cell membrane surrounds a particle and encloses the particle in a vesicle to bring the particle into the cell

Endocytosis

slide20
Small cavity or sac that contains materials; forms when part of the membrane surrounds the materials to be taken into or out of the cell

Vesicle

slide21
A method of active transport across the cell membrane in which the cell takes in extracellular fluids

Pinocytosis

slide22
The process by which a cell engulfs large particles or whole cells, either as a defense mechanism or as a means to obtain food

Phagocytosis

slide24
The process by which a substance is released from the cell through a vesicle that transports the substance to the cell surface and then fuses with the membrane to let the substance out

Exocytosis

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