Regardless of which of the two situations above, one thing is consistent: cells with these two organelles have a stronger survival advantage, and they are undoubtedly more adaptable to the current environment than cells without either.

The so-called organelle, as the name suggests, is a miniature "organ" inside a cell with a certain structure and function. They often have distinct functions, just like the organs of the human body, with a clear division of labor! Without organelles, it is difficult for cells to carry out their life activities in an orderly manner.

There are a variety of organelles in the biological world, some of which are common to all cells, and some that are only available to certain kinds of cells. For example, ribosomes, the "molecular machines" that synthesize proteins, are found in all cells, while chloroplasts, which carry out photosynthesis, are only found in plant cells. In addition, vacuoles, which are only found in plant cells and lower cells, and centrosomes, which are only found in lower nucleus animal cells.

In short, in order to adapt to their own survival requirements, various cells have "evolved" to have their own functional structures. This is the wonder of nature! In the case of a large cardinal number, countless events with countless small probabilities are possible, so from an evolutionary point of view, it is not surprising that a cell that happens to adapt to the surrounding environment appears.

Speaking of organelles, Su Yuan thought of the origin of organelles, and she knew that there was an unconventional view in the biological world, that is, the "theory of internal symbiosis".

It is believed that in the early biological world, organelles were actually independent cells, and cells at that time were relatively low-level and had relatively simple functions. They often do not have the complex physiological activities of modern cells, and their greatest value is to maintain their existence at a minimum. And keep multiplying.

It wasn't until billions of years ago that a large cell with phagocytic ability appeared. It has successively annexed several prokaryotic cells, but the engulfed prokaryotic cells have not been digested and decomposed, but have been parasitic in large cells, and slowly transitioned from parasitism to symbiosis at the beginning, and finally became an important organelle of large cells.

Mitochondria and chloroplasts have almost the same structure as large cells, and contain their own genetic material, DNA and RNA, which can replicate and pass on their own, and their existence is reminiscent of the theory of intracellular symbiosis. If the doctrine is correct, then the survival of organelles in large cells is a very harmonious process.

Mitochondria are known as the power plants of the cell and are the machines that provide energy to the cells. In aerobic respiration, the absorbed glucose is first digested and broken down into pyruvate, and then enters the mitochondria to complete the tricarboxylic acid cycle and electron transfer, thus releasing a large amount of energy.

In this process, mitochondria receive energy substances from large cells and survive comfortably and worry-free inside large cells. Large cells, on the other hand, get the energy released by the mitochondria after breaking down energy substances, so they don't have to worry about energy. Coordinate and coexist with each other, each has its own needs, and gradually found a harmonious and unified rhythm of survival in the long evolutionary process!

This is where nature is magical!

Then Su Yuan had to have a suspicion: the two organelles found in the ancient head research. Are they similar? They also have a relatively stable independent structure, and they have their own genetic material, so are they from the outside world? and most importantly. What are the functions of these two organelles?

……

……

Sunday, December 9.

A light snow swept across the land of East China. The next morning, the morning light had just risen. The snow that has not yet melted is sparsely spread on the surface, slowly melting into a crystal clear liquid in the sun, converging into a stream, slowly passing under the withered yellow and decaying branches and leaves, making a midwinter sound of flowing.

In a mountain village at the foot of Phoenix Mountain, a girl in a white down jacket pushed open the door and walked out, holding a small ceramic bowl in her hand, which contained two-thirds of the porridge, and some eggs and mustard on it. In winter, a white mist rises, steaming, simple and unpretentious.

The girl walked to a large stack of processed bamboos in the courtyard, ate the bowl of porridge into her stomach in three or two bites, and turned back to another girl and said, "Sister Xia, let's move faster, otherwise we will miss the time machine coming!"

Xia Linfang unhurriedly settled her breakfast, and by the way, took the dishes and chopsticks in Su Yuan's hand and prepared to wash them together, and said leisurely: "Don't worry, I just inquired with Grandpa Liu, there is a road from the north mountain, which can lead to the winding mountain road we went to when we camped before, if we drive along the winding mountain road, and finally walk a little more, it will save a lot of time than climbing directly." ”

"Okay, even so, we have to hurry up!" Su Yuan looked at the time helplessly, "It's six thirty in the morning, I remember that the last time I crossed over was about nine o'clock, maybe even earlier, and it will take at least two hours for us to reach the top of the mountain, right?"

"Okay, let's go. You go and pick up the car first, and I'll say goodbye to Grandpa Liu. After cleaning the dishes and chopsticks, Charlene wiped her hands and said with a light smile.

A few minutes later, the car drove out of Xiaoqiao Village at the foot of Phoenix Mountain, passed through the rows of houses in the village, and gradually sank into a lush mountain road on both sides, and soon turned into a cement winding mountain road. The mountain road is relatively steep, and it winds and undulates between the foothills, and Su Yuan drove for nearly an hour and a half before arriving at his destination.

Parking the car on the side of the road, Su Yuan and Xia Linfeng hiked into the mountain forest on one side, and the surrounding area was an endless mountain forest, with staggered vegetation and mountains, although it was winter, it was also shaded by evergreen trees throughout the year.

"Here we are, here it is!"

According to the memory in her mind, Su Yuan took Charlene to stop in the middle of the two mountains, which was the place where she landed with the first time using the time machine, and the distance between the second landing was several mountains.

"Is it here?" Charlene nodded slightly, this place is quiet and peaceful, with blue sky and white clouds, and the blue sky seems to have been washed. A few squirrels were curiously watching the two people below between the gray-brown tree trunks, and as Charlene looked over, the squirrels hurriedly jumped between the treetops and hid.

Su Yuan nodded, came to a big tree that had broken a branch by heavy snow, and reached out to gently touch the rough and cold bark, "There will be no mistake, I have an impression of this tree!"

"Now that we've confirmed that it's here, let's wait. ”

After saying this, Charlene found a place to sit down, took out her mobile phone and played games to pass the time.

Seeing this, the corners of Su Yuan's mouth raised slightly, and his casual expression flashed a hint of cunning, so he sat down next to her, and also took out his mobile phone, but he looked at the current popular online novel.

At this time, almost three months had passed since she came to this world, and she was more than halfway through the analysis of the experimental log book left behind by the ancient head. In the past three months, Su Yuan has forced himself to supplement a lot of knowledge about biotechnology, and now he seems to be able to keep up with the old experimental ideas!

Of course, in addition to the understanding of the two organelles with the ancient head's thoughts, Charlene was not idle, a few days ago, the world's first world line olfactory was completed in her hands, and Su Yuan knew the world line value of the current world for the first time after coming to this world - α=1.00106!

Yes, not part of the α=0.8 set, nor part of the α=1.2 set, but of a completely new α=1.0.

Since the materials for the manufacture of the olfactory are all provided by Su Caiwei, the selected components are the best quality and the most expensive on the market, so the possibility of data errors can be eliminated to the greatest extent! And in order to increase credibility, Charlene is not a final word, on the contrary, she has the wealth to make three world line sniffers at one time, and it turns out that the data displayed by these three world line sniffers is basically the same.

In other words, the worldline value of the current world α=1.00106 is accurate.

After getting this value, Su Yuan himself was the happiest, because this value meant a completely different world trend from the previous experiences, and a bright future! Su Yuan, who was still entangled in whether to "sacrifice himself to protect everyone" in the end, completely broke free from his gloomy mood.

After being in a good mood, the time also came to the crucial December 9th, and today in the previous world, she took a time machine to that world at this point in time.

So what Su Yuan and Xia Linfeng need to prove is that on the same December 9th, will there be another Su Yuan who will travel to the world they are currently in on a time machine. If you speculate according to the structure of the "World Line Story Tree", there should not be such a "Traverser Su Yuan" in this world.

Because Su Yuan's previous crossing was still carried out within the branch line of α=0.8, and now, due to Su Yuan's last crossing, the entire branch line of α=0.8 has been wiped out the moment it crossed into this world on September 3, resulting in a new world line of α=1.0 that should not inherit the "history" that has not yet happened behind the crossing point.

It is based on the structure of the world line: in the process of inheriting the world line, if the time point that occurs later is the time after the previous time crossing, then the previous time crossing will be faithfully retained, that is, the new world that has been crossed to retains everything that happened before, including the self that was last crossed!

These are Su Yuan's guesses, and if it turns out that their guess is correct - there is indeed no other Su Yuan who arrived in a time machine in this world, then the theory of the inheritance and beating of the world line will be more perfect! (To be continued......