ATP, Cell Membrane and Transport

Front

What is ATP?

Back

ATP (Adenosine Triphosphate) is a molecule that carries energy within cells.

Front

What does the 'TP' in ATP stand for?

Back

The 'TP' in ATP stands for tri (3) phosphates.

Front

What is the function of the cell membrane?

Back

The cell membrane controls the movement of substances in and out of the cell.

Front

What does 'selectively permeable' mean?

Back

Selectively permeable means that a membrane allows certain substances to pass while blocking others.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is the process of transporting substances across a membrane with the help of proteins, without using energy.

Front

What is osmosis?

Back

Osmosis is the movement of water across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What is the difference between active transport and passive transport?

Back

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

Front

What is a solvent?

Back

A solvent is a substance that dissolves a solute, forming a solution. In sugar water, water is the solvent.

Front

What is a solute?

Back

A solute is a substance that is dissolved in a solvent. In sugar water, sugar is the solute.

Front

What is a phospholipid bilayer?

Back

A phospholipid bilayer is a double layer of phospholipids that makes up the cell membrane.