Which of the Following Are Not Enzymes Involved in Moving

question 19

Multiple Choice

Which of the following are not enzymes involved in moving phospholipids from one leaflet to another?

• A)Flippases that move phosphatidylethanolamine and phosphatidylserine
• B)Floppases that move phospholipids from the cytosolic leaflet to the extracellular leaflet
• C)Flip-floppases that allow phospholipids to move back and forth between the inner and outer leaflets
• D)Scramblases that allow phospholipids to move down their concentration gradient
• E)Phosphatidylinositol transfer proteins that play a role in lipid signaling