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Questions and Answers
What is the main function of cholesterol in the cell membrane?
What is the main function of cholesterol in the cell membrane?
- Enhance membrane deformability
- Decrease membrane permeability to small molecules (correct)
- Promote aggregation of hydrocarbon chains
- Increase membrane fluidity
In what way do glycolipids contribute to cell function?
In what way do glycolipids contribute to cell function?
- Provide structural support to the cell membrane
- Increase cell stickiness
- Enhance cell recognition and adhesion (correct)
- Act as receptors for external molecules
What is a characteristic of integral membrane proteins?
What is a characteristic of integral membrane proteins?
- Easily extracted from the membrane
- Extend across the bilayer as a single alpha helix exclusively
- Only associated with one monolayer of the bilayer
- Interact with hydrophobic tails of lipid molecules (correct)
What is the purpose of sphingolipids in the cell membrane?
What is the purpose of sphingolipids in the cell membrane?
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How do peripheral membrane proteins differ from integral membrane proteins?
How do peripheral membrane proteins differ from integral membrane proteins?
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What is the main characteristic of lipid molecules in cell membranes?
What is the main characteristic of lipid molecules in cell membranes?
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How do unsaturated bonds in phospholipids affect membrane structure?
How do unsaturated bonds in phospholipids affect membrane structure?
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Why is the transition temperature lower in membranes with more double bonds in their phospholipids?
Why is the transition temperature lower in membranes with more double bonds in their phospholipids?
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How does tail length and saturation of phospholipids affect membrane fluidity?
How does tail length and saturation of phospholipids affect membrane fluidity?
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What is the role of phospholipids in the structure of a lipid bilayer?
What is the role of phospholipids in the structure of a lipid bilayer?
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