To be a TV presenter you will need to have: 1  confidence and an outgoing personality. 2  excellent communication and presentation skills. 3  a flexible approach. 4  the ability to improvise when necessary. 5  research and interviewing skills. 6  calmness under pressure. 7  the ability to work to strict deadlines.
See Organelle. 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.
It is sometimes called a plasma membrane. The cell membrane separates the cell from its external environment and from the neighboring cells. It also regulates the passage or transport of certain molecules into and out of the cell, while preventing the passage of others.