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Cell Membrane Structures
Cell Membrane Function
Passive Transport
Active Transport
Osmosis
100
Which type of molecule forms a lipid bilayer within a cell?
What is a phospholipid?
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?
200

The hydrophilic __________ of the phospholipids face towards the outside of the bilayer

What are heads?

200

The cell membrane is described as this, which means that it allows only certain particles through. 

What it semi-permeable?

200
The movement of molecules from high concentration to low concentration.
What is diffusion?
200

Type of active transport that macrophages use to engulf bacteria

What is endocytosis?

200
This solution has an equal number of solutes in and outside the cell.
What is isotonic.
300

The hydrophobic _______ of the phospholipids face towards the inside of the bilayer

What are tails?

300

These act as channels to allow molecules to move in and out of the cell in both active and passive transport.

What are intrinsic or channel proteins?

300
Diffusion of water.
What is osmosis?
300

Molecules that are too large to exit the cell through the membrane or proteins are transported through this process.

What is exocytosis?

300
Solution with high solute concentrations on the outside of the cell, making a cell shrink.
What is hypertonic?
400

These consume ATP (energy) when performing active transport 

What are intrinsic or channel proteins

400

Four ringed structure in the cell membrane that keeps it fluid and provides support. 

What is cholesterol?

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?
500

A protein found on the outside of cells.

What is a glycoprotein or an extrinsic protein?

500
They function as identification markers on the cell membrane.
What are glycoproteins?
500

These types of molecules move easily through a cell membrane.

What are small, nonpolar (uncharged) molecules.

500

During active transport molecules move in this concentration 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 equilibrium?