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 Sending messages. Ion exchange. Moving lipid rafts. Endocytosis. 2. “Oligo” is Greek for:1 many long short few 3. When a protein passes all the way through a membrane from one side to the other, it is called a/an1 lipid raft transmembrane protein integral protein peripheral protein 4. “Glyco” is Greek and “sacchar” is Latin for1 "Protein" "Sugar" "Big" "Signal" 5. What is the job of the enzyme Flippase?1 turns transmembrane proteins upside down. takes two phospholipids and has them trade places. turns the hydrophobic tails towards the outside of the membrane. moves a phospholipid from one side of the bilayer to the other. 6. Only the cells in your reproductive system have “self” ID tags.1 True False 7. Where might you find a higher concentration of cholesterol in a membrane?1 In a lipid raft. In the enzyme Flippase. In an oligosaccharide. In a transmembrane protein. 8. What keeps transmembrane proteins bound to the membrane?1 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. They have a hydrophobic region in their middle. 9. Peripheral proteins1 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. are embedded in the membrane, all the way from one side to the other. 10. Which layer of the membrane has more phospholipid molecules in it?1 outer layer inner layer 11. All transmembrane proteins are integral proteins, but not all integral proteins are transmembrane proteins.1 True False 12. Lipid rafts help proteins that belong together, stay together.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)
