Colostrum, the yellowish, sticky breast milk produced at the end of pregnancy, is recommended by WHO as the perfect food for the newborn, and feeding should be initiated within the first hour after birth.
The plasma membrane is a fluid mosaic. This means that it is flexible and made up of many different types of molecules. Phospholipids form the basic structure of a cell membrane, called the lipid bilayer. Scattered in the lipid bilayer are cholesterol molecules, which help to keep the membrane fluid consistent. Membrane proteins are important for
The Fluid Mosaic Model describes membranes as a fluid lipid bilayer with floating proteins and carbohydrates. Cell junctions are a special set of proteins that anchor cells together (desmosomes), occlude water passing between cells (tight junctions), and allow cell to cell direct communication (gap junctions).