Skip to main content
Select Source:

nuclear envelope

nuclear envelope The double membrane that separates the nucleoplasm (see nucleus) of a cell from the cytoplasm. The membranes consist of lipid bilayers that are separated by a perinuclear space (or compartment). The outer membrane is continuous with the rough endoplasmic reticulum and is structurally and functionally distinct from the inner membrane. The envelope is perforated at intervals by nuclear pores, which provide a channel for the selective transfer of water-soluble molecules between the nucleus and the cytoplasm. Each nuclear pore is surrounded by a disc-shaped structure (nuclear pore complex) consisting of an octagonal arrangement of eight protein granules.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"nuclear envelope." A Dictionary of Biology. . Encyclopedia.com. 22 Aug. 2017 <http://www.encyclopedia.com>.

"nuclear envelope." A Dictionary of Biology. . Encyclopedia.com. (August 22, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/nuclear-envelope-1

"nuclear envelope." A Dictionary of Biology. . Retrieved August 22, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/nuclear-envelope-1

nuclear envelope

nuclear envelope (nuclear membrane) The structure that separates the nucleus of eukaryotic cells from the cytoplasm. It comprises 2 unit membranes each 10nm thick, separated by a perinuclear space of 10–40nm. At intervals, the 2 membranes are fused around the edges of circular pores (nuclear pores) which allow for the selective passage of materials into and out of the nucleus.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"nuclear envelope." A Dictionary of Plant Sciences. . Encyclopedia.com. 22 Aug. 2017 <http://www.encyclopedia.com>.

"nuclear envelope." A Dictionary of Plant Sciences. . Encyclopedia.com. (August 22, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/nuclear-envelope

"nuclear envelope." A Dictionary of Plant Sciences. . Retrieved August 22, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/nuclear-envelope

nuclear envelope

nuclear envelope (nuclear membrane) The structure that separates the nucleus of eukaryotic cells from the cytoplasm. It comprises two unit membranes each 10 nm thick separated by a perinuclear space of 10–40 nm. At intervals, the two membranes are fused around the edges of circular pores which allow for the selective passage of materials into and out of the nucleus.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"nuclear envelope." A Dictionary of Zoology. . Encyclopedia.com. 22 Aug. 2017 <http://www.encyclopedia.com>.

"nuclear envelope." A Dictionary of Zoology. . Encyclopedia.com. (August 22, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/nuclear-envelope-0

"nuclear envelope." A Dictionary of Zoology. . Retrieved August 22, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/nuclear-envelope-0

nuclear membrane

nuclear membrane See NUCLEAR ENVELOPE.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"nuclear membrane." A Dictionary of Plant Sciences. . Encyclopedia.com. 22 Aug. 2017 <http://www.encyclopedia.com>.

"nuclear membrane." A Dictionary of Plant Sciences. . Encyclopedia.com. (August 22, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/nuclear-membrane

"nuclear membrane." A Dictionary of Plant Sciences. . Retrieved August 22, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/nuclear-membrane

nuclear membrane

nuclear membrane See NUCLEAR ENVELOPE.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"nuclear membrane." A Dictionary of Zoology. . Encyclopedia.com. 22 Aug. 2017 <http://www.encyclopedia.com>.

"nuclear membrane." A Dictionary of Zoology. . Encyclopedia.com. (August 22, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/nuclear-membrane-0

"nuclear membrane." A Dictionary of Zoology. . Retrieved August 22, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/nuclear-membrane-0