Animal and plant cells have cell membranes.

物和植物胞都具有胞膜。

Cell membranes allow for diffusion of certain molecules.

胞膜允许某些分子扩散。

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

在胞膜内，有着较小的胞器。

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

植物的胞都是被一层胞膜包裹。

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

溶解性很重要，因为胞膜是由脂质组成的。

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

胞膜挤压将两组染色单体分成两个胞。

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

反复镰变会损伤红胞膜，使其过早破坏。

The cell membrane is covered with tiny projections.

胞膜上覆盖著微小的突起物。

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胞膜。

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

物质交换穿过胞膜发生在胞与其间。

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胞膜，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”是胞碎片，而不是完整的胞--尽管它们仍然被胞膜包裹着。

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

物胞一个典型的物胞包括胞核、胞膜和胞质。

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胞膜：包围所有活胞的薄层。

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胞膜类的东西，所以他的问题是，胞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小，可以穿过胞膜完成扩散。

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，可溶解并通过内皮胞膜扩散。

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

钙子通过在胞膜上的两类通道，或者说是胞入口，进入胞。

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.

水可以透过胞膜从低渗透压一侧流至高渗透压侧。