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