Active and Passive Transport Review

Front

What is diffusion in the context of cellular transport?

Back

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

Front

What happens to diffusion in cells when equilibrium is reached?

Back

Diffusion stops when equilibrium is reached, meaning there is no net movement of molecules in or out of the cell.

Front

What is an example of diffusion in everyday life?

Back

An example of diffusion is when air freshener is sprayed in a room, and the scent spreads throughout the space.

Front

What is active transport in cellular processes?

Back

Active transport is the process by which cells use energy to move materials across the cell membrane against their concentration gradient.

Front

How does active transport differ from passive transport?

Back

Active transport requires energy to move substances from low to high concentration, while passive transport does not require energy and moves substances from high to low concentration.

Front

What is the role of the cell membrane in transport?

Back

The cell membrane controls the movement of materials in and out of the cell, acting as a selective barrier.

Front

True or False: Active transport can move molecules from an area of low concentration to an area of high concentration.

Back

True.

Front

What is equilibrium in the context of diffusion?

Back

Equilibrium is the state where the concentration of molecules is equal throughout a space, resulting in no net movement.

Front

What type of transport occurs without the use of cellular energy?

Back

Passive transport occurs without the use of cellular energy.

Front

What are some examples of passive transport mechanisms?

Back

Examples of passive transport mechanisms include diffusion, osmosis, and facilitated diffusion.