Biology - Osmosis/Diffusion

Front

What is osmosis?

Back

Osmosis is the diffusion of water molecules through a semi-permeable membrane from an area of high concentration to an area of low concentration.

Front

What direction does water move during osmosis?

Back

Water moves from an area of high concentration to an area of low concentration.

Front

What happens to an animal cell placed in a hypertonic solution?

Back

The animal cell will shrink.

Front

Define diffusion.

Back

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

Front

What is active transport?

Back

Active transport is an energy-requiring process that moves material across a cell membrane against a concentration gradient, needing ATP.

Front

What is a semi-permeable membrane?

Back

A semi-permeable membrane is a barrier that allows certain molecules to pass through while blocking others.

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 a hypotonic solution?

Back

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

Front

What is a hypertonic solution?

Back

A hypertonic solution is one where the concentration of solutes is higher outside the cell than inside, causing water to move out of the cell.

Front

What is isotonic solution?

Back

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