Topic 2 - lipid bilayer (lec 3)

Test your knowledge a protist giardia is suddenly

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Unformatted text preview: djustments might the protist make to maintain membrane fluidity following this change in temperature? a. Decrease the length of the hydrocarbon tails in its membrane phospholipids. b. Decrease the proportion of unsaturated hydrocarbon tails in its membrane phospholipids. c. Decrease the amount of cholesterol in the membrane. d. Decrease the proportion of phosphatidylcholine relative to phosphatidylethanolamine. e. Both (a) and (d) would be appropriate responses for the protist to make to maintain the same level of membrane fluidity following the change in environmental temperature. Explain your answer. BIO 1140 – SLIDE 22 Can you meet these objectives? By the end of this lecture you will be able to... Describe the fluid mosaic model of membrane structure List and explain the functions of cell membranes Distinguish, with examples, among phosphoglycerides, glycolipids and sterols Explain, with examples, membrane asymmetry Define homeoviscous adaptation and explain several mechanisms through which it is accomplished Describe the benefits of a PUFA-rich diet to birds Describe a technique used to investigate mobility in membranes Distinguish between correlation and causation BIO 1140 – SLIDE 23 e - Both (a) and (b) would be appropriate responses for the protist to make to maintain the same level of membrane fluidity following the change in environment temp...
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