Remediation EOC Review (Cell Transport)

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 semi-permeable membrane from an area of lower solute concentration to an area of higher solute concentration.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is the process of transporting molecules across a cell membrane via protein channels, moving from high to low concentration without the use of energy.

Front

What is active transport?

Back

Active transport is the movement of molecules across a cell membrane from an area of lower concentration to an area of higher concentration, requiring energy (ATP) to do so.

Front

What role do proteins play in cell transport?

Back

Proteins assist in the transport of large molecules across the plasma membrane, either through facilitated diffusion or active transport.

Front

What is a semi-permeable membrane?

Back

A semi-permeable membrane is a barrier that allows certain substances to pass through while blocking others, crucial for maintaining homeostasis in cells.

Front

How does concentration gradient affect diffusion?

Back

A concentration gradient is the difference in concentration of a substance between two areas; substances tend to diffuse from areas of high concentration to areas of low concentration.

Front

What is equilibrium in the context of diffusion?

Back

Equilibrium is the state reached when the concentration of a substance is equal throughout a space, resulting in no net movement of molecules.

Front

What is the difference between passive and active transport?

Back

Passive transport does not require energy and moves substances down their concentration gradient, while active transport requires energy to move substances against their concentration gradient.

Front

What is the significance of ATP in active transport?

Back

ATP (adenosine triphosphate) provides the energy required for active transport processes to move ions and molecules against their concentration gradient.