Cell Transport

Front

What is exocytosis?

Back

Exocytosis is the process by which a cell expels waste or secretes substances by vesicles fusing with the cell membrane.

Front

What is active transport?

Back

Active transport is the movement of substances across a cell membrane against their concentration gradient, requiring energy.

Front

What is diffusion?

Back

Diffusion is the passive movement of molecules from an area of higher concentration to an area of lower concentration.

Front

What is osmosis?

Back

Osmosis is the diffusion of water molecules through a selectively permeable membrane.

Front

What is the function of the cell membrane?

Back

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

Front

What is an isotonic solution?

Back

An isotonic solution is one where the concentration of solutes is equal inside and outside the cell, allowing for balanced movement of water.

Front

What is a hypertonic solution?

Back

A hypertonic solution has a higher concentration of solutes outside the cell, causing water to move out and the cell to shrink.

Front

What is a hypotonic solution?

Back

A hypotonic solution has a lower concentration of solutes outside the cell, causing water to move in and the cell to swell.

Front

What is passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy, following the concentration gradient.

Front

What is endocytosis?

Back

Endocytosis is the process by which a cell engulfs substances from the outside environment, bringing them into the cell.