BIO D103 Prelecture Quiz with latest test.

BIO D103 Prelecture Quiz with latest test. Which of the following statements is true for phosphoglycerides and sphingolipids? Both are membrane proteins Both contain a glycerol backbone Both are glycosylated Both have an amphiphatic organization Both use serine as a head group - correct answers.Both have an amphiphatic organization Why is cholesterol able to integrate into a lipid bilayer? Because it is a bulky steroid Because it has a planar organization Because it binds covalently to phospholipids Because it has an amphiphatic organization, similar to membrane lipids Because it prevents the dense packing of phospholipids - correct answers.Because it has an amphiphatic organization, similar to membrane lipids Which activity can only be done by a transmembrane protein? 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 - correct answers. Imagine a small synthetic vesicle made from pure phospholipids enclosing an interior lumen containing 1 mM glucose and 1 mM sodium chloride. If the vesicle is placed in pure water, which of the following happens fastest? Na+ diffuses out. Cl- diffuses out. H2O diffuses in. Glucose diffuses out.