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