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