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The following is a summary of some of the knowledge points of the People's Education Version: ** 1. Water Absorption and Dewatering of the Cell ** 1. ** Principle **: There are two conditions for the infiltration to occur. One is that there is a semi-transparent membrane, and the other is that the solution on both sides of the membrane has a concentration difference. 2. ** Water Absorption and Dewatering of Animal Cell (Take Red Blood Cell as an example)** - The red blood cell membrane was equivalent to a semi-transparent membrane. When the concentration of the external solution was less than the concentration of the plasma, the cell absorbed water; when the concentration of the external solution was greater than the concentration of the plasma, the cell lost water; when the concentration of the external solution was equal to the concentration of the plasma, the water entered and exited the cell. 3. ** Water Absorption and Dewatering of Plant Cell ** - In mature plant cells, the protoplasts (cell membrane + tonoplasts + the plasma between the two) were equivalent to a semi-transparent membrane. The condition for plasmosis to occur in mature plant cells was that the concentration of the external solution was greater than the concentration of the cell fluid, and the condition for plasmosis to occur was that the concentration of the external solution was less than the concentration of the cell fluid. ** 2. Other examples of material transport across membranes ** 1. The characteristics of a biological membrane: cell membranes and other biological membranes allow water molecules to pass through freely. Some ions and small molecules can also pass through, while other ions, small molecules, and large molecules cannot pass through. Therefore, they are all permissive membranes. The similarity between a semi-transparent membrane and a permissive membrane was that some substances could pass through while others could not. The difference was that a permissive membrane must be a semi-transparent membrane, but a semi-transparent membrane might not be a permissive membrane. ** 3. Knowledge about the existence of mineral salt in the body ** 1. ** distribution **: The distribution of mineral salt in the body is extremely uneven. For example, most of the calcium and phosphorus are in the hard tissues such as bones and teeth, iron is concentrated in the red blood cells, and iodines are concentrated in the thyreoid. 2. ** The importance to tissue and cell structure ** - Hard tissues such as bones and teeth are mostly composed of calcium, phosphorus, and calcium, while soft tissues contain more potassium. The mineral salt ions in body fluids regulated the cell membrane's penetrability, controlled water content, maintained normal osmonic pressure and acid base balance, helped transport common elements throughout the body, and participated in nerve activity and muscle contraction. Some of them were components of the prosthetic group, hormones, vitamins, protein, and DNA that constituted the protein, or they could be used as an initiator of many kinds of protein systems. They were involved in many important physiological functions, such as maintaining the activity of the heart and brain, and helping the formation of antibiotics. 3. ** Metabolization and replenishment ** - Due to metabolism, a certain amount of mineral salt was discharged from the body through various channels every day and needed to be supplemented through diet. Its metabolism can be determined by analyzing the concentration in blood, hair, urine, or tissues. In the appropriate concentration range, it was beneficial to health. Deficiency or excess could cause diseases. Deficiency of calcium, iron, and iodines was more common in China. Selenium, fluorin, etc. were different with the biochemical environment. There were both deficiency and excess diseases. ** 4. Cell structure and division ** 1. ** Chromatin, Chromosome, Sister Chromatids ** - Chromatin: A substance in the nucleus that is easily dyed dark by basic dye. It is composed of DNA and protein. During the interphase of cell division, it is a slender silk that interwove into a net. - During cell division, the Chromatin in the nucleus is highly spiraled, shortened and thickened, and can be seen under an optical microscope. - Sister Chromatids: Chromatids self-replicate during mitosis (including Meiosis), forming two identical chromatids connected by a kinetochore. If the kinetochore splits, they each become a single Chromatin. Each sister Chromatids contained one DNA, and each DNA generally contained two deoxy chains. 2. ** Concepts related to mitosis ** - Mitosis: The main way for most plants and animals to increase the number of body cells. The parent cell's embryos duplicate once and the cell splits once. - Cell cycle: A cell that continuously splits, starting from the completion of one division to the completion of the next division, including the interphase and division phase. The interphase was from the end of one cell division to the end of the next cell division. The mitosis period began after the end of the interphase, and the interphase was longer than the mitosis period. - Spindle: A structure that appears in the middle of mitosis and is closely related to the movement of the nuclei. - Equator plate: In the middle stage of mitosis, the kinetochore of the sperm is precisely arranged on the equator of the Spindle. - Amitosis: There are no changes in the Spindle and Chromosome during mitosis, such as the red blood cells of frogs. At the same time, the number of nuclei was equal to the number of kinetochore. The calculation of the number of DNA was divided into two situations. When the nucleus did not contain sister chromatids, a nucleus only contained one DNA. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

If you want to draw a kindergarten green leaf, you can refer to the following steps: First, draw a slightly curved arc as the main vein of the leaf, which is the central support part of the leaf. Then, from the main vein to the two sides, he drew some arcs of different lengths and degrees of curvature to represent the edge of the leaf, making the leaf look naturally curved. Next, he added some shorter lines on both sides of the main vein to represent the leaf veins. The leaf veins could have different directions. For example, some could extend diagonally to the edge of the leaf, and some could be slightly curved. In terms of color, you can choose to use a green colored pen or paint to cover the leaves. Dark green is used to show the darker parts of the leaves, and light green is used to show the parts that receive more light or are tender. This can make the leaves look more three-dimensional. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

Here are some recommendations for novels that include the female lead and servant girl characters: - << Golden Dream Servant Girl >>: It tells the story of the heroine's ancient life and struggles after she transmigrated to become a servant girl. - " Servant Girl Princess " was a romance web novel. However, it's not clear if these novels are completed. You can further check their completion status on the relevant novel reading platform. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

The Di tier embryonic pill was the only Di tier medicinal pill that still existed in the 'Battle Through the Heavens' comic. Its cultivation was at the advanced nine star Dou Sheng level and its strength was equivalent to a half-step Dou Di. It had a trace of essence Di Qi. This was the key to Hun Tiandi becoming a Dou Di. It did not fall into a disadvantage when fighting against Hun Tiandi, Gu Yuan, Zhu Kun, and the Nihility Devouring Flame, these four nine star Dou Shengs. If the Nihility Devouring Flame had not used the Pill Transformation Divine Art, the Di tier embryonic pill would have been able to suppress these four nine star Dou Shengs. A tier 9 Mysterious Pill was comparable to a six star Dou Sheng while a tier 9 Golden Pill could reach the level of a seven star or even an eight star Dou Sheng. The quality of a Di tier embryonic pill far exceeded that of a tier 9 Golden Pill. Hurry up and click on the link below to return to the original classic, Battle Through the Heavens!

The following is a table tennis tutorial from scratch: ** 1. Hold the racket ** 1. ** Horizontal Plate Grip Technique ** - He used three to four fingers to gently grip the racket handle, and the thumb and forefinger pressed against the shoulder. The center of the thumb and forefinger was the most suitable for the side of the ball. Stick the inside of your big toe to the rubber of your forehand. Straighten your index finger and basically stick it to the rubber of your backhand. Don't lift it up. 2. ** Straight Grip ** - There were many ways to hold the straight board, and they were not uniform. As long as the last three fingers did not spread apart, they would feel comfortable. There was also a requirement for the degree of tightness when holding the racket. It was appropriate to hold it to the extent that others could not pull it out of your hand. ** Two, bouncing the ball ** - This was the first step to mastering the "ball nature". It looked simple, but the effect was obvious. Under the condition of no mistakes, the more bouncing the ball, the better. When one was proficient in bouncing the ball, the difficulty could be increased, such as bouncing the ball while walking, or rotating the ball from the front to the back, etc. ** 3. Barehanded Bats ** - The speed could be slow, but they had to practice every day without interruption. Practicing in front of the mirror was better, and only the backhand and backhand attacks were enough. The bare-handed swing was the most effective way to establish a new movement. It was suitable for both beginners and those who wanted to improve their movements. Compared to directly playing on the stage, it was more helpful in reducing detours. While watching the Olympics, you can also read the wonderful novels related to the Olympics!

Cough in children may be caused by a variety of factors, such as allergic cough, gastric-esophagus reflex, cough variant asthma, etc. If it's allergic cough, anti-allergic drugs such as loratadin syrup and levocetirizine drops can be given; If it's gastroesophagus reflex, try to raise the upper body during sleep first. If there is no obvious improvement, use a proton-pump indicator such as omeprazol to reduce gastric acid secretion; If it's cough variant asthma, inhaled steroids such as budesuron suspension for inhalation, or beta 2 receptor stimulants such as salbutamer sulfuric acid, etc. can be given. In addition, if it is upper respiratory tract cough syndrome, oral administration of cough medicine such as dexmethorphan or ketonifen or drugs to improve respiratory sensitivity can be used. However, when a child has symptoms of dry cough, it is not recommended to blindly use medicine. The cause needs to be determined first, and then the treatment should be targeted at the cause, and the above medicines should be used under the guidance of a doctor. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

The following are some novels and comics related to young ladies who shave their heads: - In the novel," No One to Grey With You," the main character, Shen Ruyi, chose to shave her head because she had a brain tumor and needed to open her skull. She originally hoped that Gu Ze would accompany her, but Gu Ze stood her up because he wanted to take the artiste Jiang Tang to trim her bangs. Shen Ruyi could only face the matter of shaving her head alone. - In the comic " Comic Comic ", in order to help Vivi solve her hair loss problem, Silly Qiang shaved Vivi's head. Vivi was very surprised to find that she was bald when she woke up. Silly Qiang even asked Vivi for a relationship under such circumstances. - In the story, Chen Ludan's hair loss was caused by excessive stress. After being diagnosed by the doctor, she shaved her head in a barbershop. After that, she regretted it when she saw herself in the mirror.

The following are some recommendations for novels related to the finished group pets: - " Diary of the Dragon's Growth ": The protagonist Lan Dong was originally an evil dragon that could summon wind and rain. After coming to the Otherworld and becoming a little baby dragon, she was adopted. In this process, she kept doing missions to obtain experience points, and her strength gradually recovered. Finally, there were emotional lines and other plots. - The Evil Dragon Cub is Three and a Half Years Old, written by Yun Zhi. There are 117 chapters in total. The Evil Dragon Cub is a group pet. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

" Ten years " was a Chinese word that meant a long time. In history, there was an expression such as " Ten Years War " to describe the war that lasted for ten years. In folk culture, there was a traditional saying such as " Ten Years of Grave and Nine Years of Grave " to commemorate the deceased relatives. In poems, such as " Ten Years of Life and Death " and " Ten Years of Flowing Water "," Ten Years " reflected the long and vicissitudes of time. In terms of songs, Eason Chan's " Ten Years " also used the concept of " Ten Years " to represent a longer time span. At the same time, it could also be used to describe something or a state that had been around for a long time. The novel " Ten Years of Death " is equally exciting. Everyone is welcome to click and read it!

The word " excellent state " meant a very wonderful and excellent place or state. According to the information provided, Qingcheng Mountain was described as the best place to "purify one's mind". There was a quiet scenery in the empty valley, which could cleanse one's soul. Chaerhan Salt Lake was much larger than Chaka Salt Lake, which was also an excellent "sky realm". When the weather was good, it could present a beautiful reflection of the sky. When the sea was calm, Shijiu Lake could present the wonderful scene of "sky mirror", which was the best place to see the scene. In these examples, the 'perfect place' referred to a place that was unique and wonderful in some way.