Cell Transport

Front

What is diffusion?

Back

Diffusion is the movement of molecules from an area of high concentration to an area of low concentration until equilibrium is reached.

Front

What is osmosis?

Back

Osmosis is the process where water molecules move across a semipermeable membrane from an area of high water concentration to an area of low water concentration.

Front

What role do proteins play in cell transport?

Back

Proteins embedded in the lipid bilayer help transport molecules across the cell membrane.

Front

What is active transport?

Back

Active transport is the movement of molecules against their concentration gradient, requiring energy in the form of ATP.

Front

What is the difference between passive and active transport?

Back

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

Front

What is exocytosis?

Back

Exocytosis is the process by which particles are removed from a cell by being pushed out through the cell membrane.

Front

What is endocytosis?

Back

Endocytosis is the process by which cells take in substances by engulfing them in a membrane.

Front

What is a semipermeable membrane?

Back

A semipermeable membrane allows certain molecules to pass through while blocking others, facilitating selective transport.

Front

What is the concentration gradient?

Back

The concentration gradient is the difference in concentration of a substance across a space, driving diffusion and osmosis.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that uses transport proteins to help move molecules across the cell membrane.