HNRS 1007 Lecture 3: Membranes.docx
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1.) Which of the following statement best describes how bacteriain a hot spring control the fluidity of their plasma membrane?
They decrease the percentage of lipids with unsaturatedhydrocarbon chains in their plasma membrane |
Because they don't synthesize cholesterol, they cannot controlmembrane fluidity and therefore have a very fluid plasmamembrane. |
They use cholesterol to prevent membranes from becoming toofluid. |
They form lipid rafts to prevent too much fluidity |
They increase the percentage of lipids with unsaturatedhydrocarbon chains in their plasma membrane. |
2.) Which activity can only be done by a transmembraneprotein?
To be phosphorylated |
To signal from one side of the membrane to the other |
To be glycosylated |
To associate with other proteins |
To bind transiently to a lipid bilayer |