QUESTION 26 Arrange the following fatty acids in the order of increasing melting points (lowest to highest). Give sufficient explanation for your answer. (a) 16:0 (b) 16:1 (D) cis configuration ANC) 16:1 (D) trans configuration (d) 16:2 (D9.12) cis configuration (e) 18:0 For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). BIUS Paragraph

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 26**

Arrange the following fatty acids in the order of increasing melting points (lowest to highest). Give sufficient explanation for your answer.

(a) 16:0  
(b) 16:1 (Δ⁹) cis configuration  
(c) 16:1 (Δ⁹) trans configuration  
(d) 16:2 (Δ⁹,¹²) cis configuration  
(e) 18:0  

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**Question 27**

When a molecule of lactosylceramide is hydrolyzed to its components, it will yield which different components? Name them all.

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**Explanation for Educational Context:**

- **Fatty Acids Melting Point:** The melting point of fatty acids is influenced by chain length and the presence of double bonds. Saturated fatty acids (no double bonds) generally have higher melting points than unsaturated ones (having one or more double bonds). The configuration of the double bond—cis or trans—also impacts the melting point, with trans having a higher melting point than cis due to its straighter structure.

- **Lactosylceramide Hydrolysis:** This process breaks down lactosylceramide, a lipid found in cell membranes, into its constituent components, which typically include sphingosine, a fatty acid, and a sugar molecule (lactose in this case).
Transcribed Image Text:**Question 26** Arrange the following fatty acids in the order of increasing melting points (lowest to highest). Give sufficient explanation for your answer. (a) 16:0 (b) 16:1 (Δ⁹) cis configuration (c) 16:1 (Δ⁹) trans configuration (d) 16:2 (Δ⁹,¹²) cis configuration (e) 18:0 --- **Question 27** When a molecule of lactosylceramide is hydrolyzed to its components, it will yield which different components? Name them all. --- **Explanation for Educational Context:** - **Fatty Acids Melting Point:** The melting point of fatty acids is influenced by chain length and the presence of double bonds. Saturated fatty acids (no double bonds) generally have higher melting points than unsaturated ones (having one or more double bonds). The configuration of the double bond—cis or trans—also impacts the melting point, with trans having a higher melting point than cis due to its straighter structure. - **Lactosylceramide Hydrolysis:** This process breaks down lactosylceramide, a lipid found in cell membranes, into its constituent components, which typically include sphingosine, a fatty acid, and a sugar molecule (lactose in this case).
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