Cell Transport Review

Front

What is osmosis?

Back

Osmosis is the movement of water molecules through a selectively permeable membrane from an area of higher water concentration to an area of lower water concentration.

Front

What does it mean for a solution to be hypertonic?

Back

A hypertonic solution has a higher concentration of solutes compared to another solution, leading to water moving out of cells placed in this solution.

Front

What happens to a cell in a hypertonic solution?

Back

Water moves from the inside of the cell to the outside solution, causing the cell to shrink.

Front

Define hypotonic solution.

Back

A hypotonic solution has a lower concentration of solutes compared to another solution, resulting in water moving into cells placed in this solution.

Front

What is an isotonic solution?

Back

An isotonic solution has equal concentrations of solutes inside and outside the cell, leading to no net movement of water.

Front

What is the primary factor that drives osmosis?

Back

The concentration gradient of water molecules.

Front

How does osmosis differ from diffusion?

Back

Osmosis specifically refers to the movement of water, while diffusion refers to the movement of solutes.

Front

What role do cell membranes play in osmosis?

Back

Cell membranes are selectively permeable, allowing water to pass through while restricting the movement of solutes.

Front

What is facilitated diffusion?

Back

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

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, requiring energy.