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 passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy, relying on concentration gradients.

Front

What is active transport?

Back

Active transport is the movement of substances against their concentration gradient, requiring energy (usually in the form of ATP).

Front

Define 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 is diffusion?

Back

Diffusion is the process by which molecules spread from an area of high concentration to an area of low concentration.

Front

What does isotonic mean?

Back

Isotonic refers to a solution that has the same concentration of solutes as another solution, resulting in no net movement of water.

Front

What does hypertonic mean?

Back

Hypertonic refers to a solution that has a higher concentration of solutes compared to another solution, causing water to move out of the cell.

Front

What does hypotonic mean?

Back

Hypotonic refers to a solution that has a lower concentration of solutes compared to another solution, causing water to move into the cell.

Front

What is exocytosis?

Back

Exocytosis is the process by which a cell expels large quantities of materials, such as waste or toxins, by vesicles fusing with the cell membrane.

Front

What is endocytosis?

Back

Endocytosis is the process by which a cell takes in large quantities of materials by engulfing them in a vesicle.