CH 5 Definitions Flashcards

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1
Q

Define Selectively Permable Membrane

A

A membrane that allows only certain substances to pass through it

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2
Q

Define Diffusion

A

The movement of particles from an area of higher concentration to an area of lower concentration

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3
Q

Define Concentration Gradient

A

A difference in concentration of a substance between two areas

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4
Q

Define Osmosis

A

The diffusion of water across a selectively permeable membrane from an area of higher water concentration (or low solute concentration) to an area of lower water concentration (or high solute concentration)

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5
Q

Define Turgor Pressure

A

The outward pressure that is exerted on a plant cell wall by the cell contents when water is taken in by Osmosis

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6
Q

Define Endocytosis

A

The process by which a cell moves large amounts of material, or non-dissolved particles, into its cytoplasm from the outside environment

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7
Q

Define Phagocytosis

A

A type of endocytosis in which a cell uses pseudopods to move non-dissolved solid particles into its cytoplasm from the outside environment

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8
Q

Define Exocytosis

A

The process by which large amounts of material, or large non-dissolved particles, are moved from a cell’s cytoplasm to the outside environment

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9
Q

Define Permeable

A

Allowing passage

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10
Q

Define Impermeable

A

Not allowing passage

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