Núcleo celular
De CreacionWiki
Revisión del 13:13 23 mar 2013 de Luiz Alexandre Silva (Discusión | contribuciones) (Página creada con '{{traducción}} right The '''nucleus''' is the most conspicuous organelle found in a eukaryotic cell. It houses the...')
The nucleus is the most conspicuous organelle found in a eukaryotic cell. It houses the cell's chromosomes and is the place where almost all DNA replication and RNA synthesis occur. The nucleus is spheroid in shape and separated from the cytoplasm by a membrane called the nuclear envelope. The nuclear envelope isolates and protects a cell's DNA from various molecules that could accidentally damage its structure or interfere with its processing. During processing, DNA is transcribed, or synthesized, into a special RNA, called mRNA. This mRNA is then transported out of the nucleus, where it is translated into a specific protein molecule. In prokaryotes, DNA processing takes place in the cytoplasm.[1]
Referencias relacionadas
- The Nucleus Biology from About.com
| |||||||||||||||||
