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55 Cards in this Set

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-Moves from Low concentration to high concentration.


-Energy required (atp) required

Active transport

-Moves from high concentration to low concentration


-no energy required

Passive transport

Equal movement back and forth across the membrane

Equilibrium

Movement of dissolved partials in a substance from areas of high concentration to areas of low concentration (spreading out)

Concentration gradient

Three types of passive transport

Diffusion


Osmosis


Facilitated diffusion

Common molecules that move across the membrane by diffusion are _________ _________and _________.

Carbon dioxide


Oxygen

Larger molecules like _____ _____ and ______ need help across. They diffuse using a ______ _____ to facilitate their movement.

Amino acids


Glucose


Channel protein

A special type of diffusion that involves the movement of water only.

Osmosis

A special type of diffusion that uses protein. (Lock and key)

Facilitated diffusion

To calculate the percent of change.

#of water molecules on the outside


____________________________


# of molecules outside total



Answer* 100 to get % of change

Combination of the solute and the solvent

Solution

The substance being dissolved

Solute

The substance doing the dissolving

Solvent

A physical process by which the solute is pulled into smaller pieces by the solvent.

Dissolving

The tendency of water to move across a membrane based on the number of solutes on each side.

Osmotic pressure

What type of solution is this?


-the cell will shrink


-higher concentration of soul it's outside the cell

Hypertonic solution

What type of solution is this?


-the cell will swell and possible burst


-lower concentration of solutes outside the cell

Hypotonic

What type of solution is this?


-equal amounts of solute inside and outside the cell


-equilibrium

Isotonic solution

What does the prefix Endo mean?

Inside

What does the prefix Exo mean?

Outside

What does the prefix Pino mean?

Drinking

What does the prefix Phago mean?

Eating

What does the suffix Cytosis mean?

Cell

What type of diffusion is this?

Osmosis

What type of diffusion is this?

Facilitated diffusion

What type of diffusion is this?

Ion channels

Special transport proteins that can open and close.

Ion channels

The process in which cells surround and engulf substances that are too big to enter the cell. The cell uses its own membrane to engulf the substance into a vehicle and bring it in.

Endocytosis

The process in which the cell forms a vehicle around the unwanted particles and expels them out the cell.

Exocytosis

A specialised protein that pumps 3 sodium ions out of the cell for every 2 potassium ions.



Against the gradient (low to high)

Sodium potassium pump

Osmosis (passive/active) energy required? _____

Passive


No

Endocytosis (passive/active) energy required? _____

Active


Yes

Ion channels (passive/active) energy required? _____

Passive


No

Facilitated diffusion (passive/active) energy required? _____

Passive


No

Exocytosis (passive/active) energy required? _____

Active


Yes

Sodium potassium pump (passive/active) energy required? _____

Active


Yes

What are three function of the cell membrane?

1) regulates what enters and leaves


2) provides protection and support


3) communicate with other cells

What is the cell membrane made up of?

Lipid bilayer

Lipid with a phosphate group attached. A polar group attached to the phosphate.

Phospholipid

Attracted to water

Polar


Hydrophilic

Repelled by water

Nonpolar


Hydrophobic

What surrounds each side of the cell membrane?

Water based fluids

What are the three main proteins in the plasma membrane important for cell function?

1) transport proteins


2) marker proteins


3) receptor proteins

What type of lipid in the cell membrane makes it more rigid?

Cholesterol

Proteins that go all the way through the bilayer

Integral

Proteins on only one side of the bilayer

Peripheral

What part of the membrane attracts water?

Phosphate head

What part of the membrane helps maintain flexibility?

Cholesterol

What part of the membrane is involved in cell recognition?

Peripheral protein


Carbohydrate chains

Repels water in the cell membrane

Fatty acid tails

Helps transport large molecules across the membrane.

Integral protein

What type of diffusion is this?

Sodium potassium pump

Difference in endocytosis and exocytosis.

What type of diffusion is this?

Exocytosis

What type if diffusion is this ?

Endocytosis