Prokaryotic and eukaryotic cells

Cell Theory:

• Cell is as fundamental to the living organisms.
• Cells are an organisms's basic units of structure and function.
• All living organisms are made up of cells.
• The cells is derived from other cells by division.
• Cells contain genetic material of an organism which is passed from parent to daughter cell.
• All metabolic reaction take place within the cell.

Prokaryotic cells:

• Pro:before, karyon: nucleus.
• Included all bacteria and cynobacteria.
• Small cells. 0.5-10.0 mm.
• DNA not enclosed by nucelar membrane.
• Genetic material is circular DNA.
• Cytoplasm contain few organelles.
• Ribosomes are present but small compared to Eukaryote.
• Cell wall are rigid structure, made up of polysaccharide (peptidolycan) with amino acid.

Eukaryotic cells:

• Eu: true, karyon: nucleus
• e.g. animal and plant cells.
• Have chromosomes surrounded by well-defined nuclear membrane.
• Linear strands of DNA contained in nucleus.
• Contain many organelles(mitochondria, lysosome...)
• Flagella and cilia, if present, will construct from a system of  9+2 microtubules.
• Cell wall: contains cellulose(plant) and chitin(fungi).