Prokaryotes have only one lipid bilayer- the cell membrane (also known as the plasma membrane). Many prokaryotes also have a cell wall, but the cell wall is composed of proteins or long chain carbohydrates, not lipids.
3. countable noun. A wedge is an object with one pointed edge and one thick edge, which you put under a door to keep it firmly in position. 4. countable noun. A wedge is a piece of metal with a pointed edge which is used for splitting a material such as stone or wood, by being hammered into a crack in the material.
A Links is any rough grassy area between the sea and the land and the word itself is derived from the Anglo-Saxon word 'hlinc', of about 931 AD, meaning a ridge. Later the word was used to denote any common grassy area and today the term 'The Links' is used to refer to any golf course.