Cell Transport Review

Front

What is osmosis?

Back

Osmosis is the diffusion of water across a cell or semi-permeable membrane.

Front

What type of transport occurs when particles move against the concentration gradient?

Back

Active transport is the process where particles move against the concentration gradient, requiring energy.

Front

What is a hypotonic solution?

Back

A hypotonic solution is one where the concentration of solutes is lower outside the cell than inside, causing water to enter the cell.

Front

What is active transport?

Back

Active transport is the movement of molecules across a cell membrane using energy, often against a concentration gradient.

Front

Why does active transport require energy?

Back

Active transport requires energy because it moves substances against their concentration gradient.

Front

What is diffusion?

Back

Diffusion is the passive movement of particles from an area of higher concentration to an area of lower concentration.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is the process of passive transport of molecules across a cell membrane via specific transmembrane proteins.

Front

What is a hypertonic solution?

Back

A hypertonic solution has a higher concentration of solutes outside the cell than inside, causing water to leave the cell.

Front

What is passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the use of energy, following the concentration gradient.

Front

What role do protein pumps play in active transport?

Back

Protein pumps are integral membrane proteins that use energy to transport ions or molecules against their concentration gradient.