Omega

Definition

Omega refers to the position of the last carbon in a fatty acid chain, particularly used in identifying omega-3 and omega-6 fatty acids. These are essential fats important for numerous biological functions and must be obtained through diet.

5 Must Know Facts For Your Next Test

1. Omega-3 and omega-6 fatty acids are classified based on the position of the first double bond from the methyl end (omega end) of the fatty acid chain.
2. Omega-3 fatty acids include alpha-linolenic acid (ALA), eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA).
3. Omega-6 fatty acids include linoleic acid (LA) and arachidonic acid (AA).
4. Both omega-3 and omega-6 fatty acids play crucial roles in cell membrane structure, inflammation regulation, and brain function.
5. A proper balance between omega-3 and omega-6 intake is important; an imbalance can lead to health issues such as chronic inflammation.

Review Questions

• What distinguishes an omega-3 fatty acid from an omega-6 fatty acid?
• Name three types of omega-3 fatty acids.
• Why is it important to maintain a balance between omega-3 and omega-6 fatty acids?

Related terms

Fatty Acid: A carboxylic acid consisting of a hydrocarbon chain that is either saturated or unsaturated.

Lipid: Organic compounds that are insoluble in water but soluble in organic solvents, including fats, oils, waxes, and steroids.

Polyunsaturated Fat: A type of fat containing multiple double bonds within the hydrocarbon chain, which includes essential fats like omega-3 and omega-6.