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.
The âbounceâ of a wedge is the area of the club that hits the turf, hence âbouncesâ the club through the surface under the ball at impact. Bounce is the group name for the elements involved in sole design: the bounce angle, sole width, leading edge, rocker and camber of a wedge.