1.Animal and plant cells have cell membranes.

动物和植物都具有膜。

2.Cell membranes allow for diffusion of certain molecules.

膜允许某些分子扩散。

3.The cell membrane is covered with tiny projections.

膜上覆盖著微小的突起物。

4.Both plant cells and animal cells are surrounded by a cell membrane.

动植物的都是被一层膜包裹。

5.Inside the cell membrane, cells have smaller parts called organelles.

在膜内，有着较小的器。

6.When it gets there, the bubble surrounding the antibody fuses to the cell membrane.

当抗体到达后，抗体周围的气会融入膜。

7.The cell membrane pinches to separate the two sets of chromatids into two cells.

膜挤压将两组染色单体分离成两个。

8.Repeated sickling of red blood cells damages their cell membranes and promotes premature destruction.

反复镰变会损伤红膜，使其过早破坏。

9.Both of these are called diffusible because they're small enough to diffuse across cell membranes.

这两者都被称作可扩散钙，因为它们的体积足够小，可以穿过膜完成扩散。

10.The exchange of materials occurs between cells and their environment across the cell membrane.

物质交换穿过膜发生在与其环境之间。

11.But they also have another kind of complex protein on the outside of the cell membrane.

但在膜外，它们拥有另一种复杂的蛋白质。

12.Solubility is important because your cell membranes are made of lipids.

溶解性很重要，因为膜是由脂质组成的。

13.They do so by recognizing the foreign proteins, or antigens, embedded in an intruder's cell membrane.

通过识别嵌于入侵膜中的蛋白质和抗原。

14.One portion of the molecule recognises a protein on the cell's membrane, and links to it.

响尾蛇蛋白分子的一部分能识别膜，并依附其上。

15.But other enzymes are actually bound to cell membranes in the intestinal mucosal layer, and they're reusable.

但是其他酶实际上与肠粘膜层的膜结合，它们是可重复使用的。

16.Now, calcium gets into the cell through two types of channels, or cell doors, within the cell membrane.

钙离子通过在膜上的两类通道，或者说是入口，进入。

17.These curious beasts, are cell fragments rather than complete cells -- though they are still surrounded by cell membranes.

这些不寻常的“野兽”是碎片，而不是完整的--尽管它们仍然被膜包裹着。

18.Animal Cells A typical animal cell will include the nucleus, a cell membrane and a cell cytoplasm.

动物一个典型的动物包括核、膜和质。

19.So the first lecture was about cell membranes and stuff, so his question is, what are some roles of the cell membrane?

所以第一节课是关于膜之类的东西，所以他的问题是，膜的一些作用是什么？

20.Okay, so as a quick recap: the protein dystrophin is super important for stabilizing the muscle cell membrane.

抗肌萎缩蛋白对肌纤维稳定性的维持极其重要。