Cell Transport

Front

What is homeostasis?

Back

Homeostasis is the process by which all organisms maintain constant internal physical and chemical conditions necessary for survival.

Front

What is diffusion?

Back

Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration.

Front

What does active transport depend on?

Back

Active transport depends on the cell using energy to move substances against their concentration gradient.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is the movement of molecules through the cell membrane with the help of a carrier or channel protein.

Front

What is endocytosis?

Back

Endocytosis is the process by which materials are taken into the cell.

Front

What is exocytosis?

Back

Exocytosis is the process by which materials are expelled from the cell.

Front

What is osmosis?

Back

Osmosis is the diffusion of water molecules through a selectively permeable membrane.

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 concentration gradient?

Back

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

Front

What role do carrier proteins play in cell transport?

Back

Carrier proteins assist in the transport of substances across the cell membrane, especially during facilitated diffusion.