Cell Structure and Transport

Front

What is active transport?

Back

A process that requires energy (ATP) to move substances against their concentration gradient across a cell membrane.

Front

What is the role of ATP in cellular processes?

Back

ATP (adenosine triphosphate) provides the energy required for active transport and other cellular functions.

Front

What are the main components of the cell membrane?

Back

The cell membrane is primarily composed of a phospholipid bilayer, proteins, cholesterol, and carbohydrates.

Front

What are membrane proteins?

Back

Proteins embedded in the cell membrane that assist in transport, communication, and structural support.

Front

What is osmosis?

Back

The movement of water molecules across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What is diffusion?

Back

The passive movement of molecules from an area of higher concentration to an area of lower concentration.

Front

What does hypertonic mean?

Back

A solution that has a higher concentration of solutes compared to another solution, causing cells to lose water.

Front

What does hypotonic mean?

Back

A solution that has a lower concentration of solutes compared to another solution, causing cells to gain water.

Front

What is isotonic?

Back

A solution that has the same concentration of solutes as another solution, resulting in no net movement of water.

Front

What are organelles?

Back

Specialized structures within a eukaryotic cell that perform distinct functions necessary for the cell's survival.