Cells
Cell Membrane
Passive Transport
Active Transport
Osmosis
100
The smallest units of life
What are cells?
100
The structure that regulates what enters and exits the cell?
What is the cell membrane?
100

Transport that does not require cellular 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
Cells without a nucleus.
What are prokaryotes?
200

This term describes the membrane's ability to let some substances pass while blocking others.

What is semipermeable?

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

This molecule supplies the energy needed for active transport.

What is ATP?

200

Solution with equal solute concentrations as the inside of the cell.

What is isotonic.

300
A structure within a cell that performs a specific function.
What is an organelle?
300

The tails of phospholipids are made of these molecules.

What are fatty acids?

300

Diffusion of water across a membrane.

What is osmosis?

300

Molecules that are too large to move into the cell are transported through this process.

What is endocytosis?

300

Solution with higher solute concentrations than the inside of the cell.

What is hypertonic?

400
Which type of molecule forms a lipid bilayer within a cell?
What is a phospholipid?
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

Molecules that are too large to move out of the cell are transported through this process.

What is exocytosis?

400

Solution with lower solute concentrations than the inside of the cell.

What is hypotonic?

500
The two organelles that are in a plant cell, but not in an animal cell?
What are cell wall and chloroplast.
500

This lipid is embedded in the phospholipid bilayer and helps regulate membrane fluidity.

What is cholesterol?

500
These types of molecules move easily through a cell membrane.
What are small, nonpolar molecules.
500

Active transport moves substances in this direction relative to their concentration.

What is from low concentration to high concentration?

500
The direction water will travel if a cell is placed in a hypotonic solution.

What is into the cell?

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