Transport and Colligative Properties Flashcards

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1
Q

What is a colligative property?

A

a property that depends on number of solute rather than type

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2
Q

What are the colligative properties?

A

Vapor-Pressure depression, Boiling Point elevation, Freezing point depression, osmotic pressure

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3
Q

What effects all colligative properties?

A

Adding more solute

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4
Q

What is diffusion?

A

tendency for gases and liquids to occupy volume

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5
Q

Solutes will always diffuse in which direction?

A

high to low. Down it’s concentration gradient

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6
Q

When is there no net movement during diffusion?

A

when solute is evenly distributed

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7
Q

What is osmosis?

A

diffusion in which solvent diffuses rather than solute

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8
Q

What is hypertonic?

A

Environment has more solute than cell. May cause cell to shrink

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9
Q

What is hypotonic?

A

Environment has less solute than cell. May cause cell to lyse

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10
Q

What is Osmotic Pressrue?

A

Pressure it would take to stop osmosis from occurring

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11
Q

What is facilitated diffusion?

A

movement of solute across a membrane down a gradient when membrane is impermeable to solute. Uses Channel or carrier protein

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12
Q

What are two types of passive transport?

A

Simple diffusion and Facilitated diffusion

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13
Q

What are uniport carriers?

A

transport one molecule across membrane at a time

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14
Q

What are symport carriers?

A

two substances in the same direction

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15
Q

What are antiport carriers?

A

two substances, different direction

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16
Q

What limits simple diffusion?

A

surface area and size of gradient

17
Q

What limits facilitated diffusion?

A

integral membrane proteins and saturation kinetics

18
Q

What makes primary active transport unique?

A

coupled to ATP hydrolysis

19
Q

What makes secondary active transport unique?

A

First ATP is used to create gradient, then potential energy in gradient is used to drive transport of another molecule