Hydrophobic is the tail of the the molecule that is atrracted to fatty acids and is a water fearing subtance. Also the tail is None-Polar. Hydrophilic is fatty acid fearing and is attracted to water it is the head of the hydrophobic tail. The head is polar.
The Phospholipid Bilayer is made up of phospholipids. These phospholipids have a hydrophillic head, and a hydrophobic tail. They are structured so that the hydrophillic head interacts with water, and the hydrophobic tails stays away from water, but mixes with fat. This makes the phospholipids form the phospholipid bilayer. The Phospholipid Bilayer has intrinsic proteins and extrinsic proteins attached, which may have glycoproteins attached to them. Glycolipids may also be attached to the hydrophillic heads of the phospholipid. Cholestrol is also part of the phospholipid bilayer, which adds strengh to the structure.
The sequence of a bilayer consists of two layers of phospholipid molecules arranged with their hydrophobic tails facing each other and their hydrophilic heads facing outward towards the aqueous environment. This structure helps create a barrier that separates the inside and outside of the cell or organelle.
Hydrophillic
The function of a Philips head screwdriver is to turn Philips head screws.
I think you're thinking of lipids, the things with the hydrophobic tail and the hydrophillic head? I think that's it.
Hydrophillic means water loving matter. In dry seeds this matter is present which prompts the process of imbebition at the time of seed germination.
Well , do you think if the fish has no head it can be complete ? Of course not , the function of head in fish it to give protection.
having a strong affinity for water
No. Hydrophillic freely associates with water, readily entering into solution, and water loving. Fats, or lipids, are hydrophobic, which are incapable of freely associating water molecules, insoluble, and water-fearing.
what is the function of the head of the sewing machine
Depends on each animal. On humans it seems they have no function except the head hair which has a protective function against heat and cold on the head.
I'm not sure what your question is asking - if you mean what waterproofs cells in general, it's the phospholipid bilayer. In cells, the phospholipid bilayer has a hydrophobic (water hating) tail, pointed inwards, and a hydrophillic head (water loving) head on the outside.