Cell Membrane and Transport

Front

What is the definition of Concentration in the context of cell transport?

Back

Concentration refers to the amount of a substance in a specific volume, indicating how densely packed the particles are.

Front

What type of cell transport is represented by the process of endocytosis?

Back

Endocytosis is a type of active transport where cells engulf substances from the outside environment, bringing them into the cell.

Front

What energy molecule is typically used in Active Transport?

Back

ATP (Adenosine Triphosphate) is the energy molecule used in Active Transport to move materials across the cell membrane.

Front

Name two examples of Passive Transport.

Back

Diffusion and Osmosis are two examples of Passive Transport, where substances move across the cell membrane without the use of energy.

Front

What is Osmosis?

Back

Osmosis is the movement of water across a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What is Passive Transport?

Back

Passive Transport is the movement of substances across a cell membrane without the use of energy, relying on concentration gradients.

Front

What is the difference between Active Transport and Passive Transport?

Back

Active Transport requires energy (ATP) to move substances against their concentration gradient, while Passive Transport does not require energy and moves substances along their gradient.

Front

What role does the cell membrane play in transport?

Back

The cell membrane acts as a barrier that regulates what enters and exits the cell, maintaining homeostasis.

Front

What is Diffusion?

Back

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

Front

What is the significance of a concentration gradient?

Back

A concentration gradient is essential for processes like diffusion and osmosis, as it drives the movement of substances across membranes.