Which of the following molecules are not building block of phospholipids?glycerolfatty acidcholinelong-chain alcoholphosphoric acid
Question
Which of the following molecules are not building block of phospholipids?
- glycerol
- fatty acid
- choline
- long-chain alcohol
- phosphoric acid
Solution
To determine which of the provided molecules are not building blocks of phospholipids, we first need to understand the components of phospholipids. Phospholipids are composed primarily of:
- Glycerol - a backbone to which fatty acids and phosphate groups attach.
- Fatty Acids - long hydrocarbon chains that form hydrophobic tails.
- Phosphate Group - which is typically attached to the glycerol and can be further modified with other groups such as choline.
Based on this information:
- Glycerol - Building block of phospholipids.
- Fatty Acid - Building block of phospholipids.
- Choline - Often part of the phosphatidylcholine molecule, modifies the phosphate group, thus it can be considered indirectly related.
- Long-Chain Alcohol - Not a direct building block of phospholipids; phospholipids do not contain alcohols as structural components.
- Phosphoric Acid - Part of the phosphate group essential to the structure of phospholipids.
Final Answer
The molecule that is not a building block of phospholipids is long-chain alcohol.
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