Cell Transport - Diffusion and Osmosis

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 characteristic of a cell membrane allows it to control materials entering and leaving a cell?

Back

A cell membrane is semi-permeable.

Front

What happens to wastes in a cell?

Back

Wastes are removed through the semi-permeable membrane.

Front

In which organisms can diffusion occur?

Back

Diffusion can occur in both plants and animals.

Front

Why can water molecules enter an egg membrane but not sugar molecules?

Back

The holes of the semi-permeable membrane were too small to let sugar molecules through.

Front

What is diffusion?

Back

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

Front

What is a semi-permeable membrane?

Back

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

Front

What role does the cell membrane play in osmosis?

Back

The cell membrane regulates the movement of water in and out of the cell during osmosis.

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 particles.

Front

How does temperature affect diffusion?

Back

Higher temperatures increase the energy of particles, leading to faster diffusion.