[Answer] Which fact is most important in causing phospholipids to behave as they do in water?

Answer: Water molecules make hydrogen bonds; The hydrogen bonds in water exclude the nonpolar tails of phospholipids forcing the molecules into a bilayer.

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Which fact is most important in causing phospholipids to behave as they do in water? The phospholipids are amphiphilic. The hydrophilic end usually contains a negatively charged phosphate group and the hydrophobic end usually consists of two "tails" that are long fatty acid residues. In aqueous solutions phospholipids are driven by hydrophobic interactions that result in the fatty acid tails aggregating to minimize interactions with water molecules. The three main structures phospholipids form in solution; the liposome (a closed bilayer) the micelle and the bilayer. The lipid bilayer (or phospholipid bilayer) is a thin polar membrane made of two layers of lipid molecules. These membranes are flat sheets that form a continuous barrier around all cells. Cardiolipin (IUPAC name 1 3-bis(sn-3’-phosphatidyl)-sn-glycerol also known as Calcutta antigen) is an important component of the inner mitochondrial membrane where it constitutes about 20% of the total lipid composition.It can also be found in the membranes of most bacteria.The name "cardiolipin" is derived from the fact that it was first found in animal hearts. Sialic acids are a class of alpha-keto acid sugars with a nine-carbon backbone. The term "sialic acid" (from the Greek for saliva σίαλον - síalon) was first introduced by Swedish biochemist Gunnar Blix in 1952. The most common member of this group is N-acetylneuraminic acid (Neu5Ac or NANA) found in animals and some prokaryotes.. Sialic acids are found widely distributed in animal ... Elemental phosphorus was first isolated from human urine and bone ash was an important early phosphate source. Phosphate mines contain fossils because phosphate is present in the fossilized deposits of animal remains and excreta. Low phosphate levels are an important limit to growth in some aquatic systems. Cyanobacteria can be found in almost ...

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