Characteristics of Prokaryotic Cells

Characteristics of Prokaryotic Cells

There are two types of cells on the basis of nucleus present within the cell.

1. Prokaryotic cell

2. Eukaryotic cell

1. Characteristics of Prokaryotic cell

Prokaryotic cell
   Prokaryotic cell

  • Prokaryotic cell type is called prokaryotes.
  • The size range of prokaryotic cell is usually smaller than 3 micrometer in diameter.
  • Genetic material of prokaryotic cell is located in nuclear region or nucleoid.
  • Here nuclear membane,nucleolus, histone proteins are absent.
  • Genes may be present in cluster.
  • Plasma membrane lacks sterols.
  • Ribosome is of 70 S structure and evenly dispersed in cytoplasm.
  • Chloroplast, Golgi body, Mitochondria, Pinacocytes and endoplasmic reticulum is absent.
  • Mesosomes and gas vacuole may be present in some prokaryotes.
  • Cell wall of prokaryotic cell is manly composed of peptidoglycan, polysaccharides and glycoprotein molecules.
  • It may show presence of endospore in some porkaryotes.
  • Respiratory system is located in plasma membrane.
  • Lysosome are absent in prokaryotes.
  • It shows wide variety of anaerobic energy yielding mechanism.
  • Prokaryotic cell has the ability to fix atmospheric nitrogen.
  • It shows presence of magnetosome.
  • The G+C content is around 28 to 70 %
  • Protein synthesis is carried out in cytoplasm.
  • It may contain flagella, pilli and capsule on its surface.
  • Chromosome are circular in shape.
  • Mitosis and Meosis mechanism is absent in prokaryotic cell.
  • Reproduction of prokaryotic cell is carried out binnary fission mechanism.
  • Magnetogenesis is absent in these cells.
  • Examples of prokaryotic cells are Bacteria , Cyanobacteria,  Eubacteria, and Archaebacteria.

Leave a Reply