Cell Transport

Front

What molecule powers Active Transport?

Back

ATP (Adenosine Triphosphate) is the energy currency of the cell, providing the energy needed for active transport.

Front

During active transport, molecules move from...

Back

...from low to high concentration, against the concentration gradient.

Front

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

Back

Endocytosis is the process where cells engulf large molecules by wrapping them in the cell membrane.

Front

What is the cell membrane primarily made of?

Back

The cell membrane is primarily made of a phospholipid bilayer, which provides structure and regulates what enters and exits the cell.

Front

What is the term for when large molecules exit a cell?

Back

Exocytosis is the process by which large molecules are expelled from the cell.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a passive transport process that allows substances to cross membranes with the assistance of special proteins.

Front

What is osmosis?

Back

Osmosis is the diffusion of water across a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What is the difference between passive and active transport?

Back

Passive transport does not require energy and moves substances down their concentration gradient, while active transport requires energy to move substances against their gradient.

Front

What role do transport proteins play in cell transport?

Back

Transport proteins facilitate the movement of substances across the cell membrane, either passively or actively.

Front

What is the significance of the phospholipid bilayer in cell membranes?

Back

The phospholipid bilayer creates a semi-permeable barrier that protects the cell and regulates the movement of substances in and out.