Cell Transport - Obtaining and Removing Materials

Front

What is Exocytosis?

Back

Exocytosis is the process during which a cell's vesicles join with the cell membrane, releasing their contents outside the cell.

Front

What is Facilitated Diffusion?

Back

Facilitated Diffusion is a type of passive transport that allows substances to cross membranes with the assistance of special proteins.

Front

What is Diffusion?

Back

Diffusion is the passive transport process where small molecules move 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 from an area of lower solute concentration to an area of higher solute concentration.

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 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 role do vesicles play in Exocytosis?

Back

Vesicles transport materials within the cell and fuse with the cell membrane to release their contents outside.

Front

What is the difference between Active Transport and Passive Transport?

Back

Active Transport requires energy to move substances against their concentration gradient, while Passive Transport does not require energy and moves substances along the gradient.

Front

What is a selectively permeable membrane?

Back

A selectively permeable membrane is a barrier that allows certain substances to pass while blocking others.

Front

What is the significance of concentration gradients in cell transport?

Back

Concentration gradients drive the movement of substances in diffusion and osmosis, influencing how materials enter and exit cells.