Cell Transport

Front

What is Facilitated Diffusion?

Back

Facilitated diffusion is the process of molecules diffusing across a membrane through protein channels, moving from an area of higher concentration to an area of lower concentration without the use of energy.

Front

What is Active Transport?

Back

Active transport is the movement of substances across a cell membrane against their concentration gradient, requiring energy in the form of ATP.

Front

What does it mean for a solution to be Hypotonic?

Back

A hypotonic solution has a lower concentration of solutes compared to the inside of the cell, causing the cell to swell as water enters.

Front

What happens to a cell in an Isotonic solution?

Back

In an isotonic solution, the concentration of solutes is equal inside and outside the cell, resulting in no net movement of water and the cell maintaining its size.

Front

What is the role of ATP in Active Transport?

Back

ATP provides the energy required for active transport to move substances against their concentration gradient.

Front

Define Simple Diffusion.

Back

Simple diffusion is the process by which small or nonpolar molecules pass through the lipid bilayer of a cell membrane from an area of higher concentration to an area of lower concentration without the need for energy.

Front

What is Osmosis?

Back

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

Front

What is a Hypertonic solution?

Back

A hypertonic solution has a higher concentration of solutes compared to the inside of the cell, causing the cell to shrink as water exits.

Front

Explain 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 a Concentration Gradient?

Back

A concentration gradient is the difference in the concentration of a substance between two areas, which drives the movement of molecules during diffusion.