A) ;;They may shorten the process of cell division.

它们可以缩短胞分裂的过程。

Shortening with each cell division, they help determine how fast a cell ages.

随着胞分裂的缩短，它们有助于确定胞衰老的速度。

Mitosis produces identical copies of cells and is how most of our cells divide.

有丝分裂产生相同的胞，这我们大多数胞分裂的方式。

More cells equals more cell divisions.

更多的胞等于更多的胞分裂。

These can occur when DNA replicates, either when a baby is conceived or as cells divide during our lives.

这些可能发生在DNA复制的时候，怀孕的时候，在我们的生胞分裂的时候。

And more cell divisions means more chances of mutations that could let a cell become cancerous.

更多的胞分裂意味着更多可能导致胞癌变的突变。

I thought so too, but I missed some questions about cell division on the exam.

我也这么想的, 但我错过了考试关于胞分裂的一些问题。

P16INK4A is part of the control mechanism that brings cell division to a halt when this limit is reached.

P16INK4A 分子当这一限度达到时令胞分裂终止的控制机制的一部分。

Some small animals, like worms and flies, are also limited by the mechanics of their cell division.

一些小型动物，例如蠕虫和苍蝇，受限于它们的胞分裂机制。

Thus, irreversible arrest of cell division and expression of the terminally differentiated phenotype are interdependent.

因此，胞分裂的不可逆停滞和终末分化表型的表达相互依赖的。

Mitosis is when cells divide, okay?

有丝分裂胞分裂的时候, 好吗?

These cells become a myriad of tissue types that will make up bones, skin, nerves, and organs.

这些胞分裂成无数的组织型将来成为成骨头，皮肤，神经和器官。

But when a plant experiences temperature extremes, cell division in the developing fruit can go off track.

但当植物经历极端温度时，正在发育的果实的胞分裂可能会偏离轨道。

When proto-oncogenes, like epidermal growth factor receptor and RAS, are activated, it turns them into oncogenes that promote cell division.

当原癌基因（如表皮生长因子受体基因、RAS基因）被激活时，它们就变成了促进胞分裂的癌基因。

Even simple bacteria like E. Coli make about 50 times their body weight in ATP for every cell division.

即使简单的菌（如大肠杆菌），每次胞分裂所产生的ATP重量也约为其体重的50倍。

Many of the awful side-effects of chemotherapy are a result of this breakdown in cell division.

化疗的许多可怕副作用都胞分裂断的结果。

That runaway cell division forms a tumor, which will keep growing even as it invades and destroys neighboring tissues.

这种失控的胞分裂形成了一个肿瘤，即使它侵入并破坏了邻近的组织，它也会继续生长。

The reproduction of cells is a process of cell division. The division of normal cells is a highly regulated process.

胞的繁殖胞分裂的过程。正常胞的分裂一个高度调节的过程。

Crucially, these changes are generally passed on to the daughter cells produced when a cell divides, and are thus perpetuated throughout an animal's life.

至关重要的一点，这些变化一般在胞分裂的同时传递给子胞，因此这些变化将贯穿动物的一生。

Telomeres cap chromosomes to allow DNA to get copied every time a cell divides without damaging the cell's genetic code, and they shorten with each cell division.

每次胞分裂的时候，染色体端粒帽保证着胞可以正确复制胞的遗传代码。同时，随着胞的分裂，它们也在不断变短。