For now, just remember that cellular respiration breaks down nutrient molecules to generate ATP.

，只要记住细胞分解营养分子生成三磷酸腺苷。

This process of using oxygen to break down sugars into chemical energy is called cellular respiration.

线粒体利用氧气把糖分分解成化学过程叫做细胞。

And we can't forget mitochondria, the kidney-bean-shaped sites of cellular respiration in both plant and animal cells.

我们也不忘记线粒体，这是植物和动物细胞中肾豆状细胞部位。

Cellular respiration is the process by which chemical energy stored in sugars is converted to energy molecules that fuel life's essential processes.

细胞是将储存糖中化学转化为为生命基本过程提供燃料量分子过程。

Because it uses oxygen, cellular respiration is also called aerobic respiration.

因为细胞使用氧气，所以它也被称为有氧。

The whole point of cellular respiration is to generate these molecules.

细胞整个目就是生成这些分子。

Next time, we'll be seeing these plants in action as they accomplish some of their most important processes: cellular respiration and photosynthesis.

下节课，我们将看到这些植物完成一些最重要过程：细胞和光合作用。

The first bit of glucose gets delivered throughout the body and is tapped to generate ATP on the spot, through cellular respiration.

第一部分葡萄糖被输送到全身，并通过细胞当场产生三磷酸腺苷。

A process called cellular respiration consumes glucose and oxygen to form ATP, the energy currency of the cell.

称为细胞过程消耗葡萄糖和氧气以形成 ATP，即细胞量货币。

Meanwhile other carbohydrates, the ones that are used to produce energy, go through a process called cellular respiration.

与此同时，其他碳水化合物， 即用于产生量碳水化合物，会经历一个称为细胞过程。

In other words, oxygen is needed for cellular respiration and carbon dioxide is produced as a result.

换言之，细胞需要氧气，因此产生二氧化碳。

Most of us may think of Vitamin C as Citric acid, which is generated during cellular respiration of mammals including humans, but actually, it is not.

我们大多数人可认为维生素 C 是柠檬酸，它是包括人类内哺乳动物细胞过程中产生，但实际上并非如此。

Now, the conversion of food energy is part of the great balancing act that is maintaining homeostasis, and one of its greatest tricks is cellular respiration.

食物量转换是维持体内平衡伟大平衡行为一部分，它最伟大技巧之一是细胞。

It's only by working together and using both the bulk flow and simple diffusion of oxygen that they can make possible the process of cellular respiration.

只有通过协同工作，同时利用容积运动和氧气简单扩散，它们才使细胞过程成为可。

When we breathe in, our blood takes oxygen out of the air through our lungs and carries it to our cells where it's used in the process of cellular respiration.

当我们气时，我们血液通过肺部从空气中收氧气，并将其输送到我们细胞中，那里用于细胞过程。

Oxygen does play a crucial role in one of the last steps of cellular respiration, but luckily our bodies have alternative pathways that help us survive when we temporarily lack oxygen.

氧气确实细胞最后一个步骤中起着重要作用，但幸运是我们身体内存着交替途径，可以帮助我们临时缺氧情况下活下来。

Cellular respiration occurs in three simultaneous phases, where glucose is broken down by glycolysis and other catabolic reactions; and then turned into pyruvic acid and acetyl CoA; and finally ushered into the Kreb's cycle.

细胞发生三个同时阶段，其中葡萄糖被糖酵解和其他分解代谢反应分解；然后转化为丙酮酸和乙酰辅酶 A；最后进入克雷布循环。

Ultimately, this is how nutrients, like O2 get pushed out to the organs and tissues that need it; and how wastes, like CO2, or carbon dioxide, which is the main by-product of cellular respiration, gets removed.

此系统中，营养物质（如氧气）被送到所需器官和组织中；同时，身体产生废物（如二氧化碳，细胞主要副产品）被移出体外。

And when you inhale, your red blood cells grab the O2 from your lungs, and pass it off to your other cells, which use it for cellular respiration -- the process of breaking down sugar to create chemical energy.

当您气时，您红细胞会从您肺部获取氧气， 并将其传递给您其他细胞，这些细胞将其用于细胞——分解糖分以产生化学过程。