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🔬general biology i review

Omega

Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025

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.

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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.

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