Within bones, calcius is found primarily as hydroxy appetite, and is bound the collagen within bones.

在骨骼中，钙质主要作为的食欲，并与骨骼中的胶原蛋白结合。

THAT was the sound of 2-hydroxybenzaldehyde.

那是 2-苯甲醛的声音。

But others pointed out that the fossils were made from a mineral called hydroxylapatite.

但其他人指出，这些化石是由一种叫做灰石的矿物制成的。

But that discordant nightmare was an audible soundscape that represents the chemical properties of 2-hydroxybenzaldehyde.

但那个不和谐的噩梦是一种可听见的音景，它代表了 2-苯甲醛的化学性质。

For example if we have a carbonyl bonded to a Hydroxyl, that, my friends, is a Carboxylic Acid.

例如，如果我有一个与键合的羰，那，我的朋友， 就是一个羧酸。

Sometimes a hydroxyl group from one molecule is happy to join up with a hydrogen from another, forming water.

有时，一个分子中的很乐意与另一个分子中的氢结合， 形成水。

It does this by stimulating osteoclasts, the cells that break bone down, to release hydrogen ions which dissolves the hard, mineralized hydroxyapatite.

甲状旁腺过刺破骨细胞来释放氢离子；破骨细胞是一种分解骨骼的细胞，可溶解坚硬的矿化灰石。

They found that it binds to chromatin, the compact structure that allows long molecules of DNA to ball up and fit into a tiny cell.

研究人员认为，Dsup作为一种染色质绝缘体，可以保护DNA免受自由的攻击。

In the second step, the L-dopa formed by tyrosine hydroxylation is quickly decarboxylated by another enzyme called aromatic L-amino acid decarboxylase (AADC), to the neurotransmitter dopamine.

在第二步中，由酪氨酸化形成的L-多巴过酶快速脱羧另一种称为芳香族L-氨酸脱羧酶（AADC）的神经递质多巴胺。

It reacts with HOPDMS in such a way that it breaks off a hydroxyl group from one end of each chain, so that two chains can join together!

它与 HOPDMS 产生反应，过打断每一个链接末尾的组，使得两个链接可以结合在一起！

Monosaccharides link together through glycosidic bonding, which is when an " OH" from the carbon on one monosaccharide bonds with an " H" from the carbon of another monosaccharide.

单糖之间过糖苷键连接，即一个单糖分子碳原子上的与另一个单糖分子碳原子上的氢原子缩合。

Their experiments show that methanol, commonly known as wood alcohol, and hydroxyl react rapidly at –210 degrees Celsius to form methoxy, which has also been spotted in space.

他的实验显示，甲醇（俗名木精）和形成甲氧的反应速度在零下 210 摄氏度时很快，而研究人员也在宇宙中发现了这一过程。

If you were paying attention, you learned that alcohols are organic compounds with hydroxyl groups, if you dehydrogenate them, the hydroxyl converts to a carbonyl and they become dehydrogenated alcohols or aldehydes.

如果你留心的话，你就会知道醇是带有的有机化合物， 如果你将它脱氢， 就会转化为羰， 它就会变成脱氢的醇或醛。

In the body, about 85% of the phosphate is stored in the bones, where it combines with calcium to make a tough compound called hydroxyapatite which is the stuff that makes bones hard.

在人体中，约85%的酸盐储存在骨骼中，它在骨骼与钙结合形成一种叫做灰石的坚硬化合物，这是为什么骨头比较坚硬的原因。

All of this from body parts that are about 70% mineral, made of an inorganic material called hydroxyapatite that is stiff when compressed, combined with flexible protein called collagen to keep you from shattering.

所有这些身体部位大约 70% 是矿物质，由一种叫做灰石的无机材料制成，这种材料在压缩时是坚硬的，与一种叫做胶原蛋白的柔性蛋白质结合在一起，可以防止你粉碎。

It replaced one of salicylic acid's hydroxyl group — that's an oxygen and hydrogen bonded to a carbon — with an acetyl group, which is two carbons, one double-bonded to an oxygen and the other bonded to three hydrogens.

它用乙酰取代了水杨酸的一个——氧和氢与碳结合——乙酰是两个碳，一个与氧双键结合，另一个与三个氢结合。

If it's a six carbon chain with a carboxylic acid on it and an alcohol on one of the other carbons, our name has to do two things: identify that the hydroxyl group is there and identify where it is.

如果它是一个六碳链， 上面有一个羧酸， 另一个碳上有一个醇，我的名字必须做两件事：确定的存在并确定它的位置。