The DNA or the genetic material of a bacteria is organised in a circular structure which could be present freely in the cytosol or enclosed in a nucleoid.
The genetic material is usually present in the center of the cell as it controls the functions of the cell and it gets equally divided during the binary fission process in the bacteria. So the central position of the DNA facilitates the equal distribution during binary fission.
<span>As the DNA is present in the nucleus there is a compartmentalisation and the process becomes more efficient without the interaction of external bodies. The membrane of the nucleus protects the DNA from injuries</span>
Rigid skeletons are formed from materials including chitin (in arthropods), calcium compounds such as calcium carbonate (in stony corals and mollusks) and silicate (for diatoms and radiolarians).
Energy stored in food can be used by cells to add a phosphate group to ADP to make ATP. This cycling of ATP to ADP occurs in a metabolic process called cellular respiration. phosphate group breaks, and energy is released. ATP becomes ADP, and the cycle of storing and releasing energy continues until the cell dies.