Active and Passive Transport

Front

What is Homeostasis?

Back

Homeostasis is the state in which the internal environment of a cell or organism is maintained at a stable, constant condition, despite changes in the external environment.

Front

What is the main difference between Active 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 concentration gradient.

Front

What happens to a cell in a hypotonic environment?

Back

In a hypotonic environment, water enters the cell, causing it to swell and potentially burst due to increased internal pressure.

Front

What regulates what enters and leaves a cell?

Back

The Cell Membrane regulates what enters and leaves a cell, acting as a selective barrier.

Front

What is Active Transport?

Back

Active transport is the process of moving molecules from an area of low concentration to an area of high concentration, requiring energy (ATP).

Front

What is Passive Transport?

Back

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

Front

What is Osmosis?

Back

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

Front

What is Diffusion?

Back

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

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, such as the cell membrane.

Front

What role do transport proteins play in Active Transport?

Back

Transport proteins facilitate the movement of substances across the cell membrane during active transport, often using energy to change shape and move molecules.