Hydrocarbon chain

Definition

A hydrocarbon chain is a long, continuous string of carbon atoms bonded to hydrogen atoms. These chains are the fundamental components of many lipids.

5 Must Know Facts For Your Next Test

1. Hydrocarbon chains can be saturated or unsaturated depending on the presence of double bonds between carbon atoms.
2. The length and saturation level of hydrocarbon chains affect the fluidity and melting point of lipids.
3. In biological membranes, hydrocarbon chains in phospholipids influence membrane permeability and flexibility.
4. Fatty acids, which are key building blocks of lipids, consist mainly of hydrocarbon chains.
5. Hydrophobic interactions among hydrocarbon chains contribute to the formation of lipid bilayers.

Review Questions

• What is the primary difference between saturated and unsaturated hydrocarbon chains?
• How do hydrocarbon chains influence the properties of biological membranes?
• Why are hydrophobic interactions important for lipid bilayer formation?

Related terms

Fatty Acid: A carboxylic acid with a long hydrocarbon chain.

Phospholipid: A lipid containing a phosphate group in its molecule, essential for cell membranes.

Lipid Bilayer: A double layer of lipids that forms the core structure of cell membranes.