Cell Transport

Front

What is cell transport?

Back

Cell transport refers to the movement of substances across the cell membrane, which can occur through passive or active mechanisms.

Front

What is the difference between passive and active transport?

Back

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

Front

What is osmosis?

Back

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

Front

What does it mean if a solution is isotonic?

Back

An isotonic solution has the same concentration of solutes as another solution, resulting in no net movement of water across the cell membrane.

Front

What is a hydrophilic substance?

Back

A hydrophilic substance is one that is attracted to water and can easily dissolve in it.

Front

What is a hydrophobic substance?

Back

A hydrophobic substance is one that repels water and does not dissolve in it.

Front

What role do protein channels play in cell transport?

Back

Protein channels facilitate the movement of large molecules and ions across the cell membrane that cannot pass through the lipid bilayer.

Front

What is the function of the cell membrane?

Back

The cell membrane regulates what enters and exits the cell, providing protection and structural support.

Front

What is endocytosis?

Back

Endocytosis is the process by which cells engulf substances from their environment, bringing them into the cell.

Front

What is exocytosis?

Back

Exocytosis is the process by which cells expel materials from the cell, often using vesicles.