Lipids in a bilayercanite aterally at a relatively fast rate, but \"flip-flop\"

Question

Lipids in a bilayercanite aterally at a relatively fast rate, but "flip-flop" from one leaflet to the other ve slowly without catalysis. Three protein families -flippases (or flipases), floppases, and scramblases- catalyze the movement of lipids across the bilayer. Sort each of the phrases as describing flippases, floppases, or scramblases. Choose the best, most-specific enzyme name. Note: If you answer any part of this question incorrectly, a single red X will appear indicating that one or more phrases are sorted incorrectly Flippases Floppases Scramblases move phospholipids from ABC transporter translocate phosphatidylserine, inner (cytoplasmic) leaflet preventing apoptosis and engulfment by macrophages to outer (extracellular) leaflet not ATP-dependent activation may result in increased membrane lipid symmetry move phospholipids across the lipid bilayer down the concentration gradient translocate lipids from outer (extracellular) leaflet to inner (cytosolic) leaflet

Explanation / Answer

flippases

-translocate lipids from outer to inner leaflet

floppases

- move phopholipid from inner leaflet to outer leaflet

- ABC transpoter

scrambles

-move phopspholipids across lipid bilayer down the concentration gradient

-translocate phosphatidylserine preventing apoptasis and engulfment by macrophages

-non ATP dependent

=activation may increses membranr lipid symmetry

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