Membrane proteins <u>DO NOT</u> produce phospholids.
Explanation:
Phospholipids are a category of lipids that are a key part of all cell membranes. They can form lipid bilayers because of their amphiphilic characteristic. The structure of the phospholipid molecule generally consists of two hydrophobic fatty acid "tails" and a hydrophilic "head" consisting of a phosphate group. The two components are usually joined together by a glycerol molecule.
The first phospholipid identified in 1847 by the French chemist and pharmacist Theodore Nicolas Gobley, in biological tissues was lecithin, or phosphatidylcholine, in the egg yolk of chickens. Purified phospholipids are produced commercially and have found applications in nanotechnology and materials science.
Membrane proteins in the mitochondria do more than just generate cellular energy. The proteins in the membranes of the mitochondria are complex machines in the nanoworld that mediate the oxygen-coupled generation of energy in cells. Their role in this process is not yet understood in detail.
Membrane proteins perform a variety of functions vital to the survival of organisms: Membrane receptor proteins relay signals between the cell's internal and external environments. Transport proteins move molecules and ions across the membrane.
Paleontologists didn't have the technology in that time to get a good estimation on the events. Back then, they had to rely on natural sources "markers" that made the estimations. Those estimations weren't accurate. Today's measures are accurate.
