Cell Membrane
Passive Transport
Active Transport
Osmosis
MISC.
100
The structure that regulates what enters and exits the cell?
What is the cell membrane?
100
Transport that does not require energy.
What is passive transport?
100
Movement of molecules across a cell membrane that requires energy.
What is active transport?
100
Osmosis is considered this type of transport.
What is passive transport?
100

20% solute solution inside the cell. 50% solute solution outside the cell. What direction is water going to move?

Out! 

200
Four ringed structure in the cell membrane that keeps it fluid.
What is cholesterol?
200
The movement of molecules from high concentration to low concentration.
What is diffusion?
200

Active transport that keeps sodium from building up in the cell.

What is a sodium potassium pump (molecular pump)?

200
This solution has an equal number of solutes in and outside the cell.
What is isotonic.
200

50% solute solution inside the cell. 50% solute solution outside the cell. What direction is water going to move?

Equally! 

300

What is the structure of a phospholipid? Draw it! 

PICUTRES!

300
Diffusion of water.
What is osmosis?
300
Molecules that are too large to move in the cell are transported through this process.
What is endocytosis?
300
Solution with high solute concentrations on the outside of the cell, making a cell shrink.
What is hypertonic?
300

50% solute solution inside the cell. 20% solute solution outside the cell. What direction is water going to move?

In! 

400
These act as channels to allow molecules to move in and out of the cell.
What are proteins?
400
The movement of molecules across a membrane with the help of a protein. Does not require energy.
What is facilitated diffusion?
400
Vesicles transport wastes out of the cell through this process.
What is exocytosis?
400
Solution with a low solute concentration on the outside, making the cell swell.
What is hypotonic?
400

Concept that cell membranes allow some substances in and not others. 

Semipermeable membrane 

500

Hydrophilic and Hydrophobic portions of the phospholipids. 

Hydrophilic head.

Hydrophobic tails. 

500
These types of molecules move easily through a cell membrane.
What are small, nonpolar molecules.
500
During active transport molecules move in this direction across the cell membrane.
What is from low concentration to high concentration?
500
After diffusion or osmosis a cell will be in this state.
What is homeostasis?
500

O2 and CO2 are examples of substances that move in this manner across a membrane 

Simple diffusion

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