7: Membranes (part 3: The Fluid Mosaic Model) Quizellenj2022-11-23T15:37:01-05:00 Please sign up for the course before taking this quiz. 1. Where might you find a higher concentration of cholesterol in a membrane?1 In a transmembrane protein. In a lipid raft. In the enzyme Flippase. In an oligosaccharide. 2. What process is the enzyme Flippase especially helpful for?1 Ion exchange. Moving lipid rafts. Endocytosis. Sending messages. 3. Which layer of the membrane has more phospholipid molecules in it?1 outer layer inner layer 4. Only the cells in your reproductive system have “self” ID tags.1 True False 5. “Glyco” is Greek and “sacchar” is Latin for1 "Signal" "Protein" "Sugar" "Big" 6. “Oligo” is Greek for:1 few long many short 7. What keeps transmembrane proteins bound to the membrane?1 They are anchored in by many other proteins. They have an ionic charge that is attracted to the phospholipid tails. They have a hydrophobic region in their middle. They have a large hydrophilic region in their middle. 8. Peripheral proteins1 are embedded in a membrane, but don't go all the way through from one side to the other. don't go inside the membrane. are embedded in the membrane, all the way from one side to the other. are the same as integral proteins. 9. Lipid rafts help proteins that belong together, stay together.1 True False 10. All transmembrane proteins are integral proteins, but not all integral proteins are transmembrane proteins.1 True False 11. When a protein passes all the way through a membrane from one side to the other, it is called a/an1 integral protein peripheral protein lipid raft transmembrane protein 12. What is the job of the enzyme Flippase?1 moves a phospholipid from one side of the bilayer to the other. turns the hydrophobic tails towards the outside of the membrane. takes two phospholipids and has them trade places. turns transmembrane proteins upside down. 6: Membranes (part 2: Membrane Transport) 8: Proteins (part 1: Amino acids) Back to: 7: Membranes (part 3: The Fluid Mosaic Model)
