Question

Someone sprays an air freshener. The scent fills the air. This is an example of

• A. Active transport
• B. Passive transport
• C. Diffusion
• D. Breathing

Answer 1

The correct option is C Diffusion

Diffusion is the movement of molecules from a region of high concentration to one of low concentration. So when the perfume is sprayed. Molecules of the scent escape from the container, where they are present in very high concentration. They spread outward in every direction to regions where they are in low concentration. Your nose is able to detect the smell of the cologne or perfume even if you are quite a distance from the bottle that has been opened.
Active and passive transport is a biological process that supplies nutrients, water and oxygen to cells and also removes waste products. Breathing is the process of moving air into and out of the lungs to facilitate gas exchange, mostly by bringing in oxygen and flushing out carbon dioxide.