Each cell of our bodies contains 46 chromosomes.
我们体内的每个细胞都有46条染色体。
The cell is the unit of which all living organisms are composed.
细胞是构成一切生物的单位。
Stem cell research is supported by many doctors.
干细胞研究得到很多医生的支持。
Sickle-cell anaemia is passed on through a recessive gene.
镰状细胞贫血通过隐性基因遗传给后代。
This differs with the type of cell.
这与细胞类型不同。
For starters, protein is critical for every cell in our body.
首先，蛋白质对我们身体的每个细胞都至关重要。
This cell can only be an effective barrier if there's no way to get past it.
这个细胞只有在无法通过时才能成为有效的屏障。
The cells of this cluster inside next to the fluid-filled cavity is a region of the blastocyst called the inner cell mass.
在充满液体的腔体旁边的这个簇状细胞是囊胚的一个区域，称为内细胞团。
I thought so too, but I missed some questions about cell division on the exam.
我也这么想，但是我错过了一些考试中涉及的细胞分裂问题。
Oxygen is essential for the metabolic process known as cell respiration that allows cells to efficiently harvest energy from organic food.
氧气在细胞呼吸的新陈代谢过程中是必不可少的，它能使细胞有效地从有机食物中获取能量。
Much of the food value is lost in the animal's process of digestion and cell replacement.
食物的大部分价值在动物的消化和细胞替代过程中丧失了。
That's what's illustrated here with the end result being that there's some change in the life of the cell.
这就是这里所展示的最终结果就是细胞的寿命发生了一些变化。
This led them to believe that the cells in the early embryo are undetermined in the sense that each cell has the potential to develop in a variety of different ways.
这使他们相信早期胚胎中的细胞是不确定的，因为每个细胞都有可能以各种不同的方式发育。
A motive is just a little cell, a germ, out of which the composer will build other musical material.
动机只是个小小的细胞，一个胚芽，作曲家将从中创造出其他的音乐素材。
In other cases, the virus propagates in such high numbers that release is literally an explosion of the cell.
在其他情况下，病毒以如此高的数量繁殖，以至于释放出的病毒简直就是细胞的爆炸。
Now, the problem is solved by injecting it directly into the cell. Shown here, that's one issue with gene delivery.
现在，这个问题已经通过将其直接注入细胞的方法解决了。如图所示，这是基因传递的一个问题。
"They don't like to associate technology with food," said Nicholas Genovese, a visiting scholar in cancer cell biology.
“他们不喜欢把科技和食物联系起来。”癌症细胞生物学访问学者尼古拉斯·热诺维斯说。
When water moves through the wall of a plant cell, it will move from the side containing water with the lowest amount of salt into the side containing the highest amount of salt.
当水通过植物细胞的细胞壁，它会从含盐量最低的一侧进入含盐量最高的一侧。
Before egg fertilization, the gene produces a protein, found in the cytoplasm of the egg, that controls the pattern of cell division and thus handedness.
卵子受精之前，这种基因会产生一种蛋白质，这种蛋白质存在于卵子的细胞质中，它控制着细胞分裂的模式，从而控制着旋向性。
Auxin, for instance, stimulates the rate of cell elongation, causes shoots to grow up and roots to grow down, and inhibits the growth of lateral shoots.
例如，生长素刺激细胞延伸的速度，促使芽和根生长，而抑制侧枝的生长。
I was so impressed with the way you handle the microscope and the samples of onion cells, and with how carefully you observed and diagramed and interpreted each stage of cell division.
你操作显微镜和洋葱细胞样本的方式，以及对细胞分裂各阶段的仔细观察、描绘和解释，让我印象非常深刻。
The answer is that only a small subset of the genes in a particular kind of cell are expressed, or turned on, at a given time.
答案是特定细胞中只有一小部分基因在特定的时间被表达或使用。
Someday we may be able to take any cell and keep it alive functioning and reproducing itself essentially forever through the use of telomerase.
总有一天，我们也许能够利用端粒酶使任何细胞保持活力，使其正常工作并永久地自我复制。
Basal cell carcinomas can appear in some pretty strange places, including the eyelid, where it often causes a sore and the loss of eyelashes.
基底细胞癌可以出现在一些非常奇怪的地方，包括眼睑，在那里它经常引起疼痛和睫毛脱落的现象。
"There's no way on earth that genes from an alga should work inside an animal cell," says Sidney Pierce from the University of South Florida.
来自南佛罗里达大学的西德尼·皮尔斯说：“在地球上，藻类的基因不可能在动物细胞内起作用。”
Every time the Chromosome divides—every time one cell divides into two—pieces of the ends of the Chromosome, the telomere, get broken off.
当每次染色体分裂时——即当每次一个细胞分裂成两个时——染色体的尾部，也就是端区，就会发生断裂。
A drug might be able to kill some but not all of the cancer because each cell is a little different.
药物也许能杀死某些细胞，但是不能杀死所有的癌细胞，因为每个细胞都略有不同。
The nucleus is removed from the egg cell.
细胞核已经从卵细胞中移除。
They are located in the cytoplasm of the egg cell.
它们位于卵细胞的细胞质中。
A scientist showed that mouse leukemia could be transmitted by cell-free filtrates.
一位科学家发现小鼠白血病可以通过细胞游离滤液传播。
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