Cell Transport Part 1

Front

What type of membrane transport requires energy?

Back

Active transport requires energy to move molecules against their concentration gradient.

Front

What does it mean when a cell membrane is described as selectively permeable?

Back

It means the membrane only allows certain molecules to pass while keeping others out.

Front

Identify structure Y in a plant cell and describe its main function.

Back

Structure Y is the cell membrane, which regulates what enters and leaves the cell.

Front

How do small molecules like O2 and CO2 move directly between phospholipids?

Back

They move through simple diffusion.

Front

What is the direction of particle movement in passive transport?

Back

Passive transport moves particles from areas of HIGH concentration to areas of LOW concentration.

Front

Define passive transport.

Back

Passive transport is the movement of molecules across a cell membrane without the use of energy.

Front

What is active transport?

Back

Active transport is the movement of molecules against their concentration gradient, requiring energy.

Front

What is osmosis?

Back

Osmosis is the diffusion of water molecules across a selectively permeable membrane.

Front

What role do phospholipids play in the cell membrane?

Back

Phospholipids form the basic structure of the cell membrane, creating a barrier that separates the inside of the cell from the outside.

Front

What is the function of the cell wall in plant cells?

Back

The cell wall provides structure and support to the plant cell.