Cell Transport, Homeostasis and Processes

Front

What is endocytosis?

Back

Endocytosis is the process by which cells take in substances by engulfing them in a membrane. This allows the cell to absorb large molecules or particles.

Front

What is active transport?

Back

Active transport is the movement of molecules across a cell membrane from a region of low concentration to a region of high concentration, requiring energy.

Front

What does active transport require?

Back

Active transport requires energy, usually in the form of ATP (adenosine triphosphate).

Front

What happens to a cell in an isotonic solution?

Back

A cell in an isotonic solution will stay the same size because the concentration of solutes is equal inside and outside the cell.

Front

What is passive transport?

Back

Passive transport is the movement of particles across a cell membrane without the use of energy, typically moving from high to low concentration.

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 evenly distributed.

Front

What is osmosis?

Back

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

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, crucial for maintaining homeostasis.

Front

What is homeostasis?

Back

Homeostasis is the process by which living organisms maintain a stable internal environment despite changes in external conditions.

Front

What is the role of ATP in cellular processes?

Back

ATP (adenosine triphosphate) provides the energy required for various cellular processes, including active transport and muscle contraction.