Cell Transport

Front

What is osmosis?

Back

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

Front

Which way do water molecules move during osmosis?

Back

Water molecules move out of the cell when the surrounding solution is hypertonic, causing the cell to shrink.

Front

What does selectively-permeable mean?

Back

Selectively-permeable means that a membrane allows certain substances to pass through while blocking others.

Front

During osmosis, water moves from _____ concentration to _____ concentration.

Back

During osmosis, water moves from high concentration to low concentration.

Front

What is the main substance that moves during osmosis?

Back

The main substance that moves during osmosis is water.

Front

If a gummy bear is placed in salt water, what happens to its mass?

Back

The mass of the gummy bear decreases because water moves out of the gummy bear.

Front

What process is represented when water moves out of a cell in a hypertonic solution?

Back

This process is called osmosis.

Front

What happens to a cell in a hypotonic solution?

Back

In a hypotonic solution, water moves into the cell, causing it to swell.

Front

What is diffusion?

Back

Diffusion is the movement of particles from an area of high concentration to an area of low concentration.

Front

How does osmosis differ from diffusion?

Back

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