Active and passive transport

Front

What is active transport?

Back

Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy (ATP).

Front

What is passive transport?

Back

Passive transport is the movement of molecules across a cell membrane without the use of energy, moving from an area of higher concentration to an area of lower concentration.

Front

What is osmosis?

Back

Osmosis is the passive transport 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 passive movement of particles from an area of higher concentration to an area of lower concentration until equilibrium is reached.

Front

What is exocytosis?

Back

Exocytosis is an active transport process where cells expel materials in vesicles that fuse with the cell membrane, releasing their contents outside the cell.

Front

What is endocytosis?

Back

Endocytosis is an active transport process where cells engulf materials from the outside environment, forming vesicles to bring them into the cell.

Front

What is an example of diffusion?

Back

An example of diffusion is the spreading of food coloring in water.

Front

What is glucose transport in cells?

Back

Glucose transport can occur through active transport, where glucose is moved against its concentration gradient, requiring energy.

Front

What role does ATP play in active transport?

Back

ATP provides the energy required for active transport processes to move substances against their concentration gradient.

Front

What is a selectively permeable membrane?

Back

A selectively permeable membrane is a barrier that allows certain substances to pass through while blocking others, crucial for maintaining homeostasis in cells.