Cellular Transport

Front

What is endocytosis?

Back

Endocytosis is the process by which cells engulf large molecules and move them inside the membrane, using energy.

Front

What happens to a cell placed in an isotonic solution?

Back

The cell will stay the same size because the concentration of water is the same inside and outside the cell.

Front

What occurs to a cell in a hypotonic solution?

Back

A cell in a hypotonic solution will swell as water moves into the cell.

Front

What is active transport?

Back

Active transport is the movement of substances against the concentration gradient (from low to high concentration) that requires energy (ATP).

Front

What is diffusion?

Back

Diffusion is the movement of particles through the cell membrane from an area of high concentration to an area of low concentration.

Front

What is osmosis?

Back

Osmosis is the diffusion of water across a selectively permeable membrane.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is the process of passive transport of molecules across a cell membrane via specific transmembrane integral proteins.

Front

What is a concentration gradient?

Back

A concentration gradient is the difference in the concentration of a substance across a space.

Front

What is the role of ATP in cellular transport?

Back

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

Front

What is exocytosis?

Back

Exocytosis is the process by which cells expel large molecules from the cell, using energy.