Zhao Yue'er bit her pen and pondered about the textbook on the table, but she still couldn't think of the answer after thinking for a long time, and couldn't help but sigh faintly. Pen & Fun & Pavilion www.biquge.info

In order to avoid the harassment of Moxican, she has changed her position from the third floor to the second floor, not that she doesn't want to leave the library, but in fact, what kind of activities are going to be used in the teaching building in the past two days, and there are leaders inside, and there is no careful position.

As for the dormitories......

Can you still study well if you stay in the dormitory?

Several sisters are watching dramas and playing games, how embarrassing it is to bury yourself in hard study alone!

Zhao Yue'er knew that she must have gotten into the tip of the horns, and at this time, someone should come and dial it, as long as it was a little bit, she would definitely be able to get through.

But who's going to dial it?

Zhao Yue'er sighed again and held her face, if only he were there......

Her eyes wandered leisurely, but when she swept the spiral staircase, Zhao Yue'er was suddenly stunned, this, this is not ...... Yang Tian?

For fear that she was mistaken, Zhao Yue'er didn't think much about it, stood up and waved her hand over there, waving her hand and shouting:

"Brother Tian!"

"Huh?"

Yang Tian held two thick anatomical atlases, frowned and turned around, just in time to see a girl who was waving at him not far away.

Isn't this the girl I met in the cafeteria yesterday?

Glancing at it, it was still a blue casual top, denim suspenders, an airport, short hair, black-framed glasses, and a light-colored schoolbag, Yang Tian nodded politely, and then wanted to continue walking.

"Wait!"

"How?"

Yang Tian looked at the girl who had already run over, and was a little puzzled, why did he stop himself?

"That ......" Zhao Yue'er was a little excited, and her cheeks turned slightly red due to congestion.

Looking closer, Yang Tiancai found that although this girl is not as temperamental as Han Bing, nor as smart and cute as Xie Xin, and not as stupid and cute as Wang Zhi's sister, who is the flower of the nursing department this year, she still looks good.

I can watch it, I don't get tired of watching it, it's the type of little girl next door.

"What's the matter, just say it." Seeing that Zhao Yue'er was holding the pestle in front of him for a long time, but he didn't hold back a word, Yang Tian spoke, if he was fine, he would have to go back to the dormitory to study!

Take a sentence on the Internet to describe the current Yang Tian, that is, he is addicted to learning every day and can't extricate himself.

"Yes, that's right." Zhao Yue'er was in a hurry, and finally caught Yang Tian, this goods didn't come out once in hundreds of years, how could he run away again? Letting go of all his reserves, "May I ask you a question?" It's biochemical. ”

"That's the problem."

Yang Tian estimated that he had basically learned the content of the biochemistry textbooks issued by the school in the systematic learning space, and the general topics should not take too much time.

"Okay."

Yang Tian followed Zhao Yue'er to the table and saw the question she wanted to ask.

"That's right, the question is very simple, the question is what is the change in the Km value of the enzymatic reaction performance when competitive inhibition, and the answer is to increase, which I can understand, but you can see that the answer analysis not only gives competitive inhibition, but also gives the change of the two values of non-competitive inhibitors and anti-competitive inhibitors."

Zhao Yue'er began to explain her doubts in detail beside her, her brows furrowed slightly, and her fingers tapped, wanting Yang Tian to understand where her doubts were, which was not the same as throwing the book irritably when she treated Mo Xigan's head before.

"I can probably guess the principle of non-competitive inhibitors, but why do anti-competitive inhibitors change like this?"

Yang Tian silently finished reading the table of questions and answers, and then looked at Zhao Yue'er, who was frowning and began to bite the pen again, "In this way, you first talk about your understanding of the two dynamic parameters of Km and Vmax." ”

"Well, that's right." Zhao Yue'er thought for a moment and organized her language, "These two parameters are put in the inhibition of inhibitors on enzymatic reactions, so I will talk about enzymatic reactions first." ”

"There is a thing called a catalyst in chemistry, and the role of a catalyst is to change the speed of the reaction that was originally carried out in a step-by-step manner, for example, a reaction normally takes five minutes, and after adding a catalyst, it can be completed in three seconds."

"Well, go on." Yang Tian nodded.

Zhao Yue'er's face was a little more normal, and once she started to discuss and study, she was relieved from that state of sincere fear, cleared her throat, and Zhao Yue'er continued to speak.

"Enzymes are actually a kind of catalysts, and they are unique catalysts to organisms, which can catalyze various reactions in organisms to carry out efficiently, generally speaking, enzymes are proteins, but some enzymes are nucleotides."

Zhao Yue'er continued under Yang Tian's encouraging eyes, "Enzymatic reactions are reactions catalyzed by enzymes, and almost every reaction in our human body is an enzymatic reaction. ”

"Of course, there is inhibition, and when the enzyme promotes the reaction, there is also [enzyme inhibitor] to resist the action of the enzyme, so that the reaction does not go so smoothly, we call this the inhibition of the enzyme."

"The inhibitory effect of enzymes can be mainly divided into reversible inhibition and irreversible inhibition, in which the inhibitor will destroy the enzyme molecule, so that the enzyme will lose its effect, and it cannot be recovered, which is equivalent to the bottom of the kettle."

"In reversible inhibition, the inhibitor will temporarily reduce the activity of the enzyme, which is probably equivalent to pulling the enzyme to prevent her from doing the right thing, so that the time taken to complete this thing increases."

"Yes." Yang Tian nodded, "You continue." ”

Zhao Yue'er had completely calmed down at this time, and her voice had returned to normal, "In this way, as long as the enzyme can break free from the inhibitor's hand, it can continue to promote the reaction, so there is a possibility to discuss how the reaction will proceed." ”

"The Km value is the characteristic constant of the enzyme, that is, the Michaelis constant, and its value is equal to the substrate concentration when the enzymatic reaction rate reaches half of the maximum reaction rate, which can be used to express the affinity of the enzyme to the substrate, and the smaller the Km, the greater the affinity."

"Vmax is the maximum reaction rate of the enzymatic reaction."

"Well, I'm done."

Zhao Yue'er looked at Yang Tian, who nodded and groaned, a little apprehensive.

"That's good, you understand it thoroughly, but it's not straightforward enough." Yang Tian nodded, "Let's give a simple example, Cinderella can become a princess, but the premise is to marry a rich and handsome prince."

"Among them, Cinderella is the substrate, the princess is the product, and the rich and handsome prince is our enzyme, it is worth noting that it is impossible to change without the rich and handsome prince Cinderella, and before and after marriage, the rich and handsome prince is still the rich and handsome prince, he himself has not changed, just like the enzyme in the enzymatic reaction will not change."

Yang Tian glanced at Zhao Yue'er and continued.

"Let's say we have a lot of Cinderellas here, and we have a lot of princes, and the task of the princes is to turn all the Cinderellas into princesses."

"A prince can only marry one Cinderella at a time, but after the wedding, he can continue to marry the next Cinderella, but Cinderella can only marry one prince as a girl, and after the union, she cannot become a virgin again."

Zhao Yue'er's eyes lit up when she heard this, it seemed that this was the truth, much more useful than what she just said! It's simply incisive no!

Brother Tian is really amazing!