Introduction. Silicosis is a long-term lung disease caused by inhaling large amounts of crystalline silica dust, usually over many years. Silica is a substance naturally found in certain types of stone, rock, sand and clay.Working with these materials can create a very fine dust that can be easily inhaled.ilicosis is a long-term lung disease caused by inhaling large amounts of crystalline silica dust, usually over many years.
Phospholipids are a class of lipids that are a major component 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.
A cell membrane is composed of a double layer of phospholipids, more commonly referred to as a phospholipid bilayer, and each phospholipid itself is important to the structure â¦ and function of the cell membrane. phospholipid is made up of a hydrophobic (water-avoiding) tail and a hydrophilic (water-liking) head. the OH group in C1 is esterified with a saturated Fatty acid. the OH group iin C2 is esterified with unsaturated fatty acid.