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The complex I structure contains the lipid shown to the right, which contains two linked phospholipids. Circle the two phospholipids. Briefly explain your choice.

The complex I structure contains the lipid shown to the right, which contains two linked phospholipids. Circle the two phospholipids. Briefly explain your choice.

Biochemistry
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
Section: Chapter Questions
Problem 1P
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**Educational Website Content:** --- ### Question: The complex I structure contains the lipid shown to the right, which contains two linked phospholipids. Circle the two phospholipids. Briefly explain your choice. ### Diagram Description: To the right of the text, there is a diagram depicting the molecular structure of a lipid. The lipid structure consists of a long hydrocarbon chain, indicative of fatty acid tails, linked to a region with several atoms arranged in groups that likely represent the headgroups of phospholipids. The diagram seems to represent a complex lipid structure, possibly with two distinct phospholipid components connected. ### Explanation: In the given lipid diagram, the structures that form the phospholipids can be identified by looking for distinct regions that include both a hydrophilic (water-attracting) head and hydrophobic (water-repelling) tails. Typically, the hydrophilic head contains a phosphate group (often represented with 'P' or 'O - P' bonded atoms), while the hydrophobic tails are long hydrocarbon chains. - **Hydrophobic Tails**: These are long chains of carbon and hydrogen (C-H) as seen extending away from the central region. - **Hydrophilic Heads**: Characterized by the presence of a phosphate group (P) within the structure often connected to other molecules like glycerol. By circling the distinguishing phospholipid head regions connected to the hydrophobic tails, one can identify the two linked phospholipids within the overall complex lipid structure. ▶ **Note for Students**: When identifying phospholipids in a structure, always look for the signature phosphate group which differentiates the head from the long hydrocarbon chains of the tails. --- **[Insert Diagram Here]** ---
Transcribed Image Text:**Educational Website Content:** --- ### Question: The complex I structure contains the lipid shown to the right, which contains two linked phospholipids. Circle the two phospholipids. Briefly explain your choice. ### Diagram Description: To the right of the text, there is a diagram depicting the molecular structure of a lipid. The lipid structure consists of a long hydrocarbon chain, indicative of fatty acid tails, linked to a region with several atoms arranged in groups that likely represent the headgroups of phospholipids. The diagram seems to represent a complex lipid structure, possibly with two distinct phospholipid components connected. ### Explanation: In the given lipid diagram, the structures that form the phospholipids can be identified by looking for distinct regions that include both a hydrophilic (water-attracting) head and hydrophobic (water-repelling) tails. Typically, the hydrophilic head contains a phosphate group (often represented with 'P' or 'O - P' bonded atoms), while the hydrophobic tails are long hydrocarbon chains. - **Hydrophobic Tails**: These are long chains of carbon and hydrogen (C-H) as seen extending away from the central region. - **Hydrophilic Heads**: Characterized by the presence of a phosphate group (P) within the structure often connected to other molecules like glycerol. By circling the distinguishing phospholipid head regions connected to the hydrophobic tails, one can identify the two linked phospholipids within the overall complex lipid structure. ▶ **Note for Students**: When identifying phospholipids in a structure, always look for the signature phosphate group which differentiates the head from the long hydrocarbon chains of the tails. --- **[Insert Diagram Here]** ---
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