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 type of transport is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that allows substances to cross membranes with the assistance of special proteins.

Front

What is an isotonic solution?

Back

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

Front

What happens to cells in a hypotonic solution?

Back

Cells in a hypotonic solution will expand as water enters the cell due to osmosis.

Front

What is a hypertonic solution?

Back

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

Front

Define diffusion.

Back

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

Front

What is active transport?

Back

Active transport is the movement of substances across a cell membrane against their concentration gradient, requiring energy.

Front

What is the role of a semi-permeable membrane in osmosis?

Back

A semi-permeable membrane allows only certain molecules, like water, to pass through while blocking others.

Front

What occurs when a cell is placed in pure water?

Back

When a cell is placed in pure water, it will swell and may burst due to the influx of water.

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 particles.