V2EX nuclear membrane

Nuclear Membrane

释义 Definition

核膜(也常称 nuclear envelope,核被膜):包围细胞核的膜结构,将细胞核与细胞质分隔开,并通过核孔控制物质进出;在真核细胞中通常由内外两层膜构成。

例句 Examples

The nuclear membrane protects the DNA inside the nucleus.
核膜保护细胞核内的 DNA。

During cell division, the nuclear membrane breaks down and later reforms around the chromosomes.
在细胞分裂过程中,核膜会解体,随后又在染色体周围重新形成。

发音 Pronunciation (IPA)

/nuklir mmbren/

词源 Etymology

nuclear 来自拉丁语 nucleus,意为“核心、核”;membrane 来自拉丁语 membrāna,意为“薄膜、皮膜”。合起来字面意思是“细胞核的膜”,用于描述包围细胞核、起分隔与调控作用的膜性结构。

相关词 Related Words

文学与著作中的用例 Literary & Notable Works

  • Molecular Biology of the Cell(Alberts 等):在细胞核结构与核-质运输章节中频繁讨论核膜/核被膜及核孔复合体。
  • Campbell Biology(Urry 等):在真核细胞结构与细胞分裂章节中介绍核膜的功能与分裂期的解体/重建。
  • The Cell: A Molecular Approach(Cooper & Hausman):系统讲解核膜的双层结构、与内质网的连续性及核内外物质交换。
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