Cell Transport Vocab

Front

What is osmosis?

Back

Osmosis is the movement of a solvent (usually water) from a low solute concentration to a high solute concentration in order to equalize the concentration of the two solutions, and it does not require energy.

Front

Define exocytosis.

Back

Exocytosis is the movement of very large molecules out of the cell across the cell membrane through the fusion of vesicles, and it requires energy.

Front

What is diffusion?

Back

Diffusion is the movement of both solvent and solute particles from high concentration to low concentration in order to equalize the concentration of the solution, and it does not require energy.

Tags

NGSS.HS-LS2-3

Front

Explain active transport.

Back

Active transport is the movement of a substance across a cell membrane against its concentration gradient, from lower concentration to higher concentration, and it requires energy.

Front

What is endocytosis?

Back

Endocytosis is the movement of very large molecules into the cell across the cell membrane through the fusion of vesicles, and it requires energy.

Front

What role does the cell membrane play in transport processes?

Back

The cell membrane acts as a selective barrier that regulates the movement of substances in and out of the cell, facilitating processes like osmosis, diffusion, active transport, exocytosis, and endocytosis.

Front

Differentiate between passive and active transport.

Back

Passive transport does not require energy and includes processes like osmosis and diffusion, while active transport requires energy to move substances against their concentration gradient.

Front

What is the concentration gradient?

Back

The concentration gradient is the difference in the concentration of a substance across a space, which drives the movement of particles during diffusion and osmosis.

Front

How does temperature affect diffusion?

Back

Higher temperatures increase the kinetic energy of molecules, leading to faster diffusion rates, while lower temperatures decrease molecular movement and slow down diffusion.

Tags

NGSS.MS-PS1-4

Front

What is the significance of vesicles in cellular transport?

Back

Vesicles are membrane-bound sacs that transport large molecules in and out of cells during processes like exocytosis and endocytosis.