Animal and plant cells have cell membranes.

动和植细都具有细膜。

Cell membranes allow for diffusion of certain molecules.

细膜允许某些分子扩散。

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

在细膜内，有的细器。

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

动植的细都是被一层细膜包裹。

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

溶解性很重要，因为细膜是由脂质组成的。

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

质交换穿过细膜发生在细与其环境之间。

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

细膜挤压将两组染色单体分离成两个细。

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

反复镰变会损伤红细膜，使其过早破坏。

The cell membrane is covered with tiny projections.

细膜上覆盖著微的。

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

当抗体到达后，抗体周围的气泡会融入细膜。

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细膜，并依附其上。

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”是细碎片，而不是完整的细--尽管它们仍然被细膜包裹。

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

动细一个典型的动细包括细核、细膜和细质。

See, synthetic surfactants are really good at disrupting cell membranes: that thin layer that surrounds all living cells.

合成表面活性剂非常擅长破坏细膜：包围所有活细的薄层。

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细膜之类的东西，所以他的问题是，细膜的一些作用是什么？

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，可以穿过细膜完成扩散。

Meanwhile, lipid- or fat-soluble molecules, like oxygen and carbon dioxide, can dissolve and then diffuse across the endothelial cell membranes.

同时，脂质或脂溶性分子，如氧气和二氧化碳，可溶解并通过内皮细膜扩散。

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

钙离子通过在细膜上的两类通道，或者说是细入口，进入细。

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。

Water can travel across cell membranes from where there's a higher concentration of water to where there's a lower concentration.

水可以透过细膜从低渗透压一侧流至高渗透压侧。