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