Cell Transport Vocab

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).

Tags

NGSS.HS-LS2-3

Front

What is passive transport?

Back

Passive transport is the movement of molecules across a cell membrane without the use of energy, occurring along the concentration gradient.

Front

Define osmosis.

Back

Osmosis is the diffusion of water molecules through a selectively permeable membrane from an area of high water concentration to an area of low water concentration.

Tags

NGSS.MS-LS1-2

Front

What is diffusion?

Back

Diffusion is the process by which molecules spread from areas of high concentration to areas of low concentration until equilibrium is reached.

Tags

NGSS.HS-LS2-5

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 without energy.

Front

What is the role of ATP in active transport?

Back

ATP provides the energy required for active transport 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.

Front

Explain the difference between osmosis and diffusion.

Back

Osmosis specifically refers to the movement of water, while diffusion refers to the movement of any type of molecule.

Front

What is concentration gradient?

Back

A concentration gradient is the difference in the concentration of a substance between two areas, which drives the movement of molecules.

Front

What is endocytosis?

Back

Endocytosis is the process by which cells engulf substances from their external environment, bringing them into the cell.