MRSA is an infection caused by a type of staph bacteria thatâs resistant to many different antibiotics. Learn about its symptoms, causes, and treatment. MRSA is an infection caused by a type of staph bacteria thatâs resistant to many different antibiotics. Learn about its symptoms, causes, and treatment. Newsletter
description. Egg yolk forms about 30% of an egg. It is the part of an egg which feeds the embryo, hence it is a major source of fat, protein, vitamin and minerals. Egg yolk mainly consists of protein and lipids, The lipid part is almost fully bound to proteins, as lipoproteins. This is why egg yolk is a good emulsifier.
The answer, they say, is the chicken. Researchers found that the formation of egg shells relies on a protein found only in a chicken's ovaries. Scientists have discovered that eggs can only have been laid by chickens, thus solving the puzzle. Therefore, an egg can exist only if it has been inside a chicken. The protein-called ovocledidin-17, or OC-17 - acts as a catalyst to speed up the development of the shell. This hard shell is essential to house the yolk and its protective fluids while the chick develops inside.