• lve
  • Helping Hand
They are morphologically the most primitively cells.they seemed to have appeared 3.5 million years ago.they have one envelope system.they have a size of range 1 to 10 um.they have a slime layer or capsule,a middle cell walling an inner cell membrane.cytoplasm lacks most organelles.genetic material is not enclosed by nuclear is coiled in the form of nucleic. Dna is double stranded and helical and coiled.they are haploid.they have only one copy of a chromosome.They have much less Dna tht codes for far fewer proteins than the eukaryotic cells. There is no nucleus.they are more versatile in their synthetic activities.they are more suitable for study in biochemistry. They have 70s ribosomes.