Cell Transport

Front

What type of molecules can directly go through the phospholipid bilayer without assistance?

Back

Very small non-polar molecules

Front

What is the process called when a cell takes in a large molecule by fusing it with the cell membrane?

Back

Endocytosis

Front

What is the sodium-potassium pump an example of?

Back

Active transport

Front

Which example is NOT a form of passive transport?

Back

Active transport

Front

What is the movement of molecules from high to low concentration called?

Back

Simple diffusion

Front

Define passive transport.

Back

The movement of substances across a cell membrane without the use of energy.

Front

What is osmosis?

Back

The diffusion of water molecules across a selectively permeable membrane.

Front

What is facilitated diffusion?

Back

The process of passive transport of molecules across a membrane via specific transmembrane proteins.

Front

What is the role of the cell membrane in transport?

Back

It regulates what enters and exits the cell, maintaining homeostasis.

Front

What is exocytosis?

Back

The process by which a cell expels materials in vesicles that fuse with the cell membrane.