Both phospholipids and proteins are asymmetrically located in cell membranes - meaning the outer half and the inner half of the bilayer contain different phospholipids and the proteins have a cytoplasmic side and an "out" side. in experiments when detergents are used to disrupt the cell membrane, a water soluble mixture of lipids and proteins is the result. then, if the detergents are subsequently removed by dialysis, the lipid bilayer will reform spontaneously with the proteins included. except now the asymmetry is gone and both proteins and lipids are located randomly in the newly formed membrane. what does this result tell you about how the cell synthesizes cellular membranes

The process of cell membrane synthesis is regulated.

Explanation:

The components of cell membrane (lipids, proteins, carbohydrates) are synthesized inside the cell organelles: endoplasmic reticulum and Golgi apparatus. After the synthesis, they are transported via vesicular transport also called vesicular trafficking. The transport is also very regulated process (molecules contain transport signal sequences). Components are secreted from the vesicles via exocytosis, when they arrive to their target location.

protocol for imps extraction focusing on membrane protein extraction, solubilisation, and purification.

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.