The molecular structure shown here represents which lipid component? monounsaturated fatty acid saturated fatty acid simple lipid trans fatty acid polyunsaturated fatty acid

Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
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### Question 18:

The molecular structure shown here represents which lipid component?

a) saturated fatty acid  
b) simple lipid  
c) monounsaturated fatty acid  
d) trans fatty acid  
e) polyunsaturated fatty acid  

### Detailed Explanation:

**Molecular Structure:**  
- The structure features a long hydrocarbon chain with a terminal carboxyl group (COO-). 
- There is a double bond present in the chain, indicating unsaturation. The rest of the chain consists of single-bonded carbon and hydrogen atoms.

### Options Explained:

- **Saturated Fatty Acid:** No double bonds between carbon atoms.
- **Simple Lipid:** Generally refers to esters of fatty acids with alcohols, such as triglycerides.
- **Monounsaturated Fatty Acid:** Contains one double bond in the hydrocarbon chain.
- **Trans Fatty Acid:** Contains trans double bonds, as opposed to cis double bonds, affecting the geometry and properties.
- **Polyunsaturated Fatty Acid:** Contains more than one double bond.

**Conclusion:** Based on the structure, which includes one double bond, option c) "monounsaturated fatty acid" is correct.
Transcribed Image Text:### Question 18: The molecular structure shown here represents which lipid component? a) saturated fatty acid b) simple lipid c) monounsaturated fatty acid d) trans fatty acid e) polyunsaturated fatty acid ### Detailed Explanation: **Molecular Structure:** - The structure features a long hydrocarbon chain with a terminal carboxyl group (COO-). - There is a double bond present in the chain, indicating unsaturation. The rest of the chain consists of single-bonded carbon and hydrogen atoms. ### Options Explained: - **Saturated Fatty Acid:** No double bonds between carbon atoms. - **Simple Lipid:** Generally refers to esters of fatty acids with alcohols, such as triglycerides. - **Monounsaturated Fatty Acid:** Contains one double bond in the hydrocarbon chain. - **Trans Fatty Acid:** Contains trans double bonds, as opposed to cis double bonds, affecting the geometry and properties. - **Polyunsaturated Fatty Acid:** Contains more than one double bond. **Conclusion:** Based on the structure, which includes one double bond, option c) "monounsaturated fatty acid" is correct.
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