Active Transport, Cell Membrane, and Homeostasis

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, using energy in the form of ATP.

Front

Define Cell Membrane.

Back

The cell membrane is a biological membrane that separates and protects the interior of all cells from the external environment, controlling the movement of substances in and out.

Front

What is Homeostasis?

Back

Homeostasis is the process by which living organisms regulate their internal environment to maintain stable, constant conditions, such as temperature and pH.

Front

What happens during Endocytosis?

Back

Endocytosis is a process where the cell membrane engulfs particles or fluids, forming a vesicle to bring them into the cell.

Front

What is Diffusion?

Back

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

Front

Explain 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

What is the role of the cell membrane in homeostasis?

Back

The cell membrane regulates what enters and leaves the cell, helping to maintain homeostasis by controlling the internal environment.

Front

Define Isotonic Solution.

Back

An isotonic solution is a solution that has the same concentration of solutes as another solution, resulting in no net movement of water across the cell membrane.

Front

What is the difference between Active Transport and Passive Transport?

Back

Active transport requires energy to move substances against their concentration gradient, while passive transport does not require energy and moves substances along their concentration gradient.

Front

What is a Vesicle?

Back

A vesicle is a small, membrane-bound sac that transports materials within a cell or to the cell membrane for export.