The Cytoplasma Membrane

The cell wall maintains the integrity of the cell. The cell wall helps protect the cell against the environmental changes it it allows most molecules to pass through it. This layer is composed of molecules called peptidoglycans. Just inside the cell wall is a less rigid envelope called the plasma membrane also known as the cytoplasmic membrane. In bacterial cells the plasma membrane has two primary functions: it serves as a selective barrier to molecules that are penetrating the cell wall allowing water and oxygen to flow easily into the cell but restricting other proteins from entering; secondly, the plasma membrane contains enzymes proteins that cause chemical reactions to occur that are vital to the life functions of the cell. Bacteria can
Some of these channels are non-specific which means that they allow molecules up to a certain size to pass through but other channels are specific which means that certain particular molecules can pass through them by not allowing other molecules including antibiotics into the cell. The cell wall channels protect the cell contents. The cytoplasm is a stick substance that serves as the matrix for all the interior contents of the cell. Cytoplasm is made up of 80% of water, 20% enzymes, nutrients and other molecules. In most bacteria the genetic material is contained is one circular chromosome and this contains all the information that is needed to form another bacteria. The chromosome consists of genes which are made up of DNA. DNA consists of long twisted strands of compounds called nucleotides arranged in a double helix structure. DNA carries the code for reproducing specific proteins which determine characteristics or function of the organism. Bacterial cells lack cell nucleus therefore they are called
Plasmids may carry genes that code for resistance to antibiotics and for production of toxins and both of these are important to bacterial survival. However the DNA contained in them is not necessary for reproduction or other basic cell functions. There is more than one type of RNA: ribosomal RNA and other proteins complex to form the ribosome. Ribosomes are structures that serve us protein factories for a cell. The cell cannot survive without proteins, ribosomes are vital to cell life. Like DNA, RNA is a component of all living cells and it is composed of nucleotides and arranged in long