Wax

Definition

Waxes are a type of lipid characterized by long-chain fatty acids esterified to long-chain alcohols. They are hydrophobic and serve protective and structural functions in various organisms.

5 Must Know Facts For Your Next Test

1. Waxes are composed of long-chain fatty acids and alcohols linked by ester bonds.
2. They are primarily hydrophobic, making them effective barriers to water loss in plants and animals.
3. Beeswax is a well-known example used by bees to construct their hives.
4. In plants, waxes form a protective layer called the cuticle on the surface of leaves and stems.
5. Waxes play a role in preventing dehydration by providing a waterproof barrier.

Related terms

Lipids:

A diverse group of hydrophobic molecules, including fats, oils, waxes, phospholipids, and steroids.

Ester Bond: A chemical bond formed between an acid and an alcohol with the release of water.

Cuticle:

A protective layer made primarily of wax found on the surfaces of plant leaves and stems that helps prevent water loss.