lesson one生物专业英语译文第一课.pdf

Lesson one Inside the living cell: Structure and function of internal cell parts 1. Cytoplasm 2. The Nucleus 3. Organelles 4. The Cytoskeleton 5. Cellular Movements 1 2 1.Cytoplasm: The Dynamic, Mobile factory 细胞质：动力工厂 cytoplasm ：n.[生]细胞质 cytoplasmic : adj.[生]细胞质的 organelle: n.[生]细胞器 cytoskeleton : n.细胞骨架 3 Most of the properties we associate with life are properties of the cytoplasm. 生命的大部分特征表现在细胞质的特征上。 Much of the mass of a cell consists of this semifluid substance, which is bounded on the outside by the plasma membrane. 细胞的大部分物质由半流体物质组成，并且是由细胞膜 （原生质膜）包被。 4 Organelles are suspended within it, supported by the filamentous network of the cytoskeleton. 细胞器悬浮在其中，并由丝状的细胞骨架支撑。 Dissolved in the cytoplasmic fluid are nutrients, ions, soluble proteins, and other materials needed for cell functioning. 细胞质中溶解了大量的营养物质，离子，可溶蛋白以及 维持细胞生理需求的其它物质。 5 2. The nucleus: information central 细胞核：信息中心 The eukaryotic cell nucleus is the largest organelle and houses the genetic material (DNA) on chromosomes. (In prokaryotes the hereditary material is found in the nucleoid.) 真核细胞的细胞核是最大的细胞器，在其染色体上携带有遗传 物质 （原核细胞的遗传物质存在于拟核中）。 6 nucleus n. 细胞核 eukaryote n.真核生物 eukaryotic adj. 真核状态