Cell Transport

Front

What is cell transport?

Back

Cell transport refers to the movement of substances across the cell membrane, which can occur through various mechanisms such as diffusion, osmosis, and active transport.

Front

Define diffusion.

Back

Diffusion is the process by which molecules move from an area of high concentration to an area of low concentration until equilibrium is reached.

Front

What is osmosis?

Back

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

Front

What is a hypertonic solution?

Back

A hypertonic solution has a higher concentration of solutes compared to the inside of the cell, causing water to move out of the cell.

Front

What is a hypotonic solution?

Back

A hypotonic solution has a lower concentration of solutes compared to the inside of the cell, causing water to move into the cell.

Front

What is an isotonic solution?

Back

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

Front

What is active transport?

Back

Active transport is the movement of molecules across a cell membrane against their concentration gradient, requiring energy (ATP).

Front

What is facilitated diffusion?

Back

Facilitated diffusion is the process by which molecules pass through the cell membrane via protein channels, moving from high to low concentration without energy.

Front

What is exocytosis?

Back

Exocytosis is the process by which cells export large molecules, such as hormones, by vesicles fusing with the cell membrane.

Front

What is endocytosis?

Back

Endocytosis is the process by which cells take in large molecules by engulfing them in a vesicle formed from the cell membrane.