IV.1 Lipids + IV.2 Membrane structure and function
7 important questions on IV.1 Lipids + IV.2 Membrane structure and function
What are the physical features of lipids?
What is the difference between saturated and unsaturated fatty acids?
Unsaturated fatty acids are ‘hungry’, they usually have a double bond which can be broken to add atoms.
The difference in lipids is that saturated fatty acids have a low fluidity, unsaturated fatty acids are less densely packed so a higher fluidity.
How does lipid composition influence membrane features?
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How are lipid membranes formed and help together?
Held together: electrostatic interactions of headgroups with water (hydrogen bonds) and ions (salt bridges) and the hydrophobic effect of fatty acids.
What is the biological function of membranes?
What are lipid rafts?
What is the role of a flippase and why is it important?
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