Membrane and Cell Transport (Honors Bio)

Front

What does it mean that the cell membrane is selectively permeable?

Back

It means that certain things can enter while others cannot.

Front

What tool is used to view cells?

Back

Microscope

Front

What is osmosis a form of?

Back

Passive Transport

Front

What does active transport require?

Back

ATP (energy) and it moves materials from low to high concentration, against the concentration gradient.

Front

What is the movement of molecules against a concentration gradient called?

Back

Active transport.

Front

Define passive transport.

Back

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

Front

What is facilitated diffusion?

Back

A process that allows substances to cross membranes with the assistance of special proteins.

Front

What is the primary function of the cell membrane?

Back

To protect the cell and regulate what enters and leaves.

Front

What is the difference between active and passive transport?

Back

Active transport requires energy to move substances against their concentration gradient, while passive transport does not.

Front

What role do proteins play in cell transport?

Back

Proteins help facilitate the movement of substances across the cell membrane.