Human biology Flashcards

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1
Q

What is osmosis?

A

The net movement of water molecules from an area of low solute concentration to an area of high solute concentration, across a semi permeable membrane, until the equilibrium is established

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2
Q

What is diffusion?

A

The net movement of molecules from an area of high concentration to an area of low concentration, until the equilibrium is established

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3
Q

What is facilitated diffusion?

A

When the substance binds to a specific carrier protein causing it to change shape, and allow the substance to cross the cell membrane

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4
Q

What is active transport?

A

Carrier proteins use energy from ATP to move substances from low concentration to high concentration

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5
Q

What is vesicular transport?

A

Energy is used to move enclosed vesicles containing substances such as water enzymes into or out of the cell

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6
Q

What is exocytosis?

A

When vesicles are used to remove substances out of the cell

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7
Q

What is endocytosis?

A

When vesicles are used to bring substances into the cell

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8
Q

What is the term for endocytosis involving liquids?

A

Pinocytosis

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9
Q

What is the term for endocytosis involving solids?

A

Phagocytosis

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10
Q

What is a concentration gradient?

A

The difference in concentration between two areas

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