7: Membranes (part 3: The Fluid Mosaic Model) Quizellenjmchenry2021-10-01T23:30:02-04:00 Please sign up for the course before taking this quiz. Where might you find a higher concentration of cholesterol in a membrane?1 In a transmembrane protein. In the enzyme Flippase. In an oligosaccharide. In a lipid raft. Lipid rafts help proteins that belong together, stay together.1 True False All transmembrane proteins are integral proteins, but not all integral proteins are transmembrane proteins.1 True False What process is the enzyme Flippase especially helpful for?1 Endocytosis. Sending messages. Moving lipid rafts. Ion exchange. “Glyco” is Greek and “sacchar” is Latin for1 "Big" "Signal" "Sugar" "Protein" 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. Only the cells in your reproductive system have “self” ID tags.1 True False Peripheral proteins1 are embedded in the membrane, all the way from one side to the other. don't go inside the membrane. are the same as integral proteins. are embedded in a membrane, but don't go all the way through from one side to the other. What keeps transmembrane proteins in the membrane?1 They have a hydrophobic region in their middle.. They are anchored in by many other proteins. They have a large hydrophilic region in their middle. They have an ionic charge that is attracted to the phospholipid tails. 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 peripheral protein integral protein 6: Membranes (part 2: Membrane Transport) 8: Proteins (part 1: Amino acids) Back to: 7: Membranes (part 3: The Fluid Mosaic Model)
