Osmosis

Front

What is osmosis?

Back

Osmosis is the movement of water across a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What is the primary substance that moves during osmosis?

Back

Water.

Front

What is diffusion?

Back

Diffusion is the process by which molecules move from an area of high concentration to an area of low concentration.

Front

What is the difference between osmosis and diffusion?

Back

Osmosis specifically refers to the movement of water, while diffusion refers to the movement of any type of molecules.

Front

What is an isotonic solution?

Back

An isotonic solution is one where the concentration of solutes is the same inside and outside of the cell, resulting in no net movement of water.

Front

What is a hypertonic solution?

Back

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

Front

What is a hypotonic solution?

Back

A hypotonic solution has a lower concentration of solutes outside the cell than inside, causing water to move into the cell.

Front

What is the role of ATP in active transport?

Back

ATP provides the energy required to move substances against their concentration gradient, from low to high concentration.

Front

What happens to a cell in a hypertonic solution?

Back

The cell will lose water and may shrivel due to the higher concentration of solutes outside.

Front

What happens to a cell in a hypotonic solution?

Back

The cell will gain water and may swell or even burst due to the lower concentration of solutes outside.