Explore Active and Passive Transport Mechanisms

Front

What is diffusion?

Back

Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration until equilibrium is reached.

Front

What is osmosis?

Back

Osmosis is the diffusion of water molecules through a selectively permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

Define isotonic solution.

Back

An isotonic solution is one where the concentration of solutes is equal inside and outside the cell, resulting in no net movement of water.

Front

Define hypotonic solution.

Back

A hypotonic solution has a lower concentration of solutes compared to the inside of the cell, causing water to move into the cell, potentially leading to swelling or bursting.

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).

Front

What is facilitated diffusion?

Back

Facilitated diffusion is the process of passive transport of molecules across a cell membrane via specific transmembrane integral proteins.

Front

What is phagocytosis?

Back

Phagocytosis is a type of active transport where cells engulf large particles or cells, forming a vesicle to bring them into the cell.

Front

What is pinocytosis?

Back

Pinocytosis is a form of endocytosis where cells take in liquid from the surrounding environment, forming small vesicles.

Front

What is exocytosis?

Back

Exocytosis is the process by which cells expel materials in vesicles that fuse with the plasma membrane, releasing their contents outside the cell.

Front

What is the role of Na+/K+ pumps?

Back

Na+/K+ pumps are active transport mechanisms that move sodium ions out of the cell and potassium ions into the cell, crucial for maintaining cellular function.