The Cell By: David Yepes Vivas
ÂżHow many and what types of cells exist?
Prokaryotes: This cells contains genetic material that is on the cytoplasm. And it doesnâ€™t have nuclear membrame. Eukaryotes: It contains genetic material and nuclear membrame in the cromosomes.
Prokaryotic Cells The prokaryotes are a group of organisms that lack a cell nucleus, or any other membrane bound organelles. The organisms that have a cell nucleus are called eukaryotes. Most prokaryotes are unicellular, but a few such as mycobacteria have multicellular stages in their life cycles.
Eukaryotic Cells It called on all eukaryotic cells that have the fundamental genetic material enclosed within a double membrane, nuclear envelope, which defines a cell nucleus. These cells come to be microscopic in size but large and varied compared to other cells. It is divided in animal cell and plant cell
ÂżWhat does â€œCellâ€? means? The term cell has three major uses. On the one hand, this is the fundamental unit of living organisms, with ability to reproduce independently and consists of cytoplasm and a nucleus surrounded by a membrane. A cell is a group of people who work independently within an organization.
多What is a virus? A virus is a small infectious agent that can replicate only inside the living cells of organisms. Most viruses are too small to be seen directly with a light microscope. Viruses infect all types of organisms, from animals and plants to bacteria and archaea. In 1892, an article describing a non-bacterial pathogen infecting tobacco plants, and the discovery of the tobacco mosaic virus Beijerinck in 1898, about 5,000 viruses have been described in detail, although there are millions of different types.
Published on Oct 5, 2011