Osmosis & Diffusion Flashcard 1

Front

What is osmosis?

Back

Osmosis is the diffusion of water across a selectively permeable membrane.

Front

What is diffusion?

Back

Diffusion is the movement of solutes (molecules) from an area of high concentration to an area of low concentration.

Front

What is a selectively permeable membrane?

Back

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

Front

What is the main substance that osmosis focuses on?

Back

Water.

Front

What happens to perfume in a room over time?

Back

The perfume molecules diffuse from an area of high concentration (the bottle) to an area of low concentration (the room).

Front

What is facilitated diffusion?

Back

Facilitated diffusion is a type of passive transport that uses proteins to help move molecules across a membrane.

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What is active transport?

Back

Active transport is the movement of molecules against their concentration gradient, requiring energy.

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 solutes.

Front

What is an example of diffusion in everyday life?

Back

An example of diffusion is the smell of cookies spreading throughout a house.

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.