Cell membrane function in bacterial cell

Many bacteria have proteins in the membrane which helps movement of water against the concentration gradient. Plasma membrane lies inside the cell wall and is separated from the latter by a periplasmic space. It is present just above the cell membrane and gives a specific shaped to the cell. The cell membrane is a biological membrane that separates the interior of all cells from the outside environment which protects the cell from its environment. The cell membrane plasma membrane is a thin semi permeable membrane that surrounds the cytoplasm of a cell. Membrane proteins which may be structural or functional may be permanently or transiently associated with one side or the other of the membrane or even be permanently built into the bilayer while other proteins span the bilayer and may form transport channels through the membrane. This membrane can be invaginated to form simple internal membranous structures called mesosomes. The bacteria cell wall is an important structure which is rigid and non living envelop around the cell. It is rigid solid covering which provides shape and structural support to the cell. Its function is to protect the integrity of the interior of the cell by allowing certain substances into the cell while keeping other substances out. Because of this cell wall bacteria can survive harshest environmental conditions like the drought heat chemical exposure pressure etc. The membrane also contains membrane proteins including integral proteins that go across the membrane serving as membrane transporters and peripheral proteins that loosely attach to the o. Cell wall protects the bacterial cells against bursting in hypotonic solution. It is selectively permeable as it allows to pass selective substances such as sugar aminoacids across it. The membranes of bacteria are structurally similar to the cell membranes of eucaryotes except that bacterial membranes consist of saturated or monounsaturated fatty acids rarely polyunsaturated fatty acids.

The cell membrane consists of a lipid bilayer including cholesterols that sit between phospholipids to maintain their fluidity at various temperatures. Bacterial cell membrane has electron transport chains in the cell membrane. Atp synthase enzyme which is a protein is also located in the membrane. Periplasmic space occurs between plasma membrane and cell wall. Iron sulfur proteins are located in the membrane. Bacterial cells almost always are surrounded by a chemically complex cell wall. Cell wall lies between plasma membrane and glycocalyx. This allows the cell to take up chemicals and. Cell membrane of bacteria is composed of phospholipid and proteins.

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