Recently, Vishay Inter Technology, Inc. (NYSE: VSH) announced that it has launched two new panel potentiometers with built-in knob switches —P16F and PA16F and IP67 sealed. Vishay Sfernice P16F and PA16F potentiometers have a dielectric strength of up to 5000 VAC and a rated power of 1 W at+40 C, which can be used to simplify the design of industrial and audio applications and optimize the cost.know creator knob Our growth has to go through many hardships, but entrepreneurs are never afraid and boldly move forward. https://www.azilian.co

　　The device released a few days ago integrates a knob and a panel potentiometer in one assembly, and there is no need to purchase and assemble a separate knob. In addition, only the installation hardware and terminals are located on the back of the panel, and the required gap on the back of the micro potentiometer panel is less than 15 mm

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　　PA16F adopts conductive plastic resistor core, which is suitable for audio applications. P16F cermet knob potentiometer is suitable for industrial motor drives, welding equipment, HVAC and lighting systems and control panels. The device is fully sealed according to IP67 standard and can work reliably under extreme environmental conditions.

　　Potentiometer can customize knob scale, resistance, wires and connectors, as well as pawl and switch options. The device can also provide metal knobs as required. P16F and PA16F meet CECC 41000 or IEC 60393-1 test standards.

　　In this World of Warcraft: The War Within guide, we will delve into an in-depth analysis of the strengths and weaknesses inherent in each specialization, plus the changes and hero talent tree features. This will empower you to make an informed and well-considered decision regarding which classes and specs to dedicate your time and efforts to, all based on the WoW War Within tier list, which focuses on the best and worst DPS, healers, and tanks.The above conclusions show that Diablo 4 Gold To a great extent, it can bring new vitality to the market and make the industry develop well. https://www.mtmmo.com/diablo-4-gold

　　WoW The War Within Tier List

　　WoW The War Within Tier List: Best DPS, Healer & Tank Classes/Specs to Main

　　Hero talent trees play a crucial role in determining which class and spec to play in the World of Warcraft The War Within, considering this factor and the abilities of different specs, on the WoW TWW tier list, you can find the best DPS, tanks and healers to play and avoid the worst ones.

　　1. Arcane Mage – S Tier DPS

　　One of the biggest winners in The War Within is Arcane Mage, it has been redesigned to deal high damage, and also feels smoother and easier to play, with a simplified rotation. Arcane Mage has access to powerful hero talents that contribute to its high damage output. Even though receiving some nerfs, it remains dominant and is expected to continue performing well at launch. For both raids and Mythic+, Arcane Mage is a great spec to main in the War Within, especially for players who like playing ranged caster DPS.

　　2. Enhancement Shaman – S Tier DPS

　　Another top-tier DPS for the new expansion is Enhancement Shaman, it has the potential to deal some of the highest damage in the game. Recent updates and buffs have reduced the cooldowns of some hardest-hitting abilities for shamans, such as Doom Winds and Primordial Wave. The two hero talent trees of the class are fun to play in both Mythic+ and raids. In terms of other specs, Restoration and Elemental are also strong.

　　3. Shadow Priest – S Tier DPS

　　The final S-tier choice for DPS is Shadow Priest, it wins due to the great damage and utility, simple design, and potential to avoid nerfs. It has become one of the most popular specs in World of Warcraft. The simplified design makes it very easy to understand compared to previous more complicated iterations. Shadow Priest also shows great utility for raids and M+ dungeons with abilities such as Shadow Word: Pain. Its Dark Void hero talent has one of the greatest visuals and deals great damage.

　　4. Guardian Druid – S Tier Tank

　　The design of Guardian Druid is well-suited for the new tanking paradigm, which focuses on consistent damage dealt to the tank rather than spike damage. This spec has solid self-sustain, allowing them to maintain health and keep tanking. Guardian Druid brings powerful utility tools that can increase versatility and provide valuable buffs to the raid, one of the examples is Mark of the Wild. When talking about the talent tree, Elune’s Chosen focuses on Lunar and Arcane damage, which helps the Guardian Druid keep threats and reduces damage dealt to them.

　　5. Preservation Evoker – S Tier Healer

　　The Preservation Evoker offers a range of playstyles as a healer. Both the Chronowarden and Flameshaper trees are enjoyable and offer unique benefits. The Flameshaper tree offers flexibility in gameplay, with options for healing over time effects or chunky healing. Evoker has some great abilities, for example, Living Flame provides incredible spot healing, and Threads of Fate buffs allies significantly, similar to Augmentation. It is worth being ranked in the top tier and even the best healer, with a high degree of flexibility and high healing output.

　　6. Restoration Shaman – S Tier Healer

　　As one of the best healers in War Within, Restoration Shaman has seen significant improvements, thanks to the new Skyfury raid buff and the redesign of the class-specific talent tree. The new Totemic hero talent tree has brought great interactions and increased the effectiveness of totems, providing more support and mobility. Healing Rain and Chain Heal have been improved, and the hero talent tree is considered one of the best in the game.

　　7. Rogue – F Tier DPS

　　The Rogue class is The War Within is currently underperforming and not enjoyable to play. Outlaw is said to excel in AOE situations but be one of the worst single-target DPS specs in the game. Assassination Rogue is described as either being broken or not good at all. Subtlety Rogue is criticized for its repetitive rotation and low damage output.

　　8. Feral Druid – F Tier DPS

　　Feral Druid has a relatively low damage output. The Wildstalker hero talent tree makes damage over time effects feel too passive and not impactful. Feral Druids always feel energy-starved and have a slow pace, which is dependent on haste and other stats. The rotation is simple and bland, especially with the hero talents that don’t feel great compared to other classes.

　　9. Beast Master Hunter – F Tier DPS

　　What makes Beast Master Hunter lose in WoW War Within is the poor and boring hero talent tree. The class is also too simple and not fun to play and lacks engaging gameplay mechanics. The advantage of this spec is at raids, but it is uncertain to maintain that.

　　10. Fury Warrior – F Tier DPS

　　Fury Warrior has similar issues in terms of hero talent trees even though with above-average damage, and the rotation is bloated, with too many buttons to press and procs to manage.

　　Classification of amino acids, several special amino acids, molecular structure and physical and chemical properties of protein, composition of nucleic acid, double helix structure of DNA, basic concept of enzyme, Michaelis equation, coenzyme composition.More importantly, put small molecules It is imperative for us to make thorough analysis and maximize its social function. https://www.all-chemistry.com/

　　Memorize 20 kinds of amino acids and try to remember English abbreviations and codes as much as possible, because exams often appear directly with codes. Protein’s molecular structure often examines the manifestations of various levels of structure and their bonds. The physical and chemical properties of protein and the purification of protein usually use the physical and chemical properties of protein to purify protein without destroying the structure of protein. Pay attention to the identification of amino acids and physical and chemical properties of protein. The basic unit of nucleic acid is nucleotide, which is composed of multiple nucleotides, and the connecting bond between nucleotides is 3′, 5′- phosphodiester bond. DNA double helix structure, in which two bases exist in strict accordance with A = T (two hydrogen bonds) and G triple C (three hydrogen bonds), and the characteristics of various RNA.

　　In addition, we should pay attention to some commonly used concepts in nucleic acid problem solving. The first thing that enzymes should pay attention to is some basic concepts, such as ribozyme, deoxyribozyme, enzyme activity center, isozyme, isomerase and so on. The key point of the Metric Equation test is V=Vmax[S” target=_blank>/Km+[S” target=_blank>, which explains the equation of the relationship between the concentration of enzymatic reaction and the reaction speed. In the exam, candidates are sometimes asked to do simple calculations according to this equation before they can answer. The difference of several inhibitors.

　　According to the characteristics of allosteric enzymes, it should be noted that allosteric regulation can cause conformational changes of enzymes. It is important to pay special attention here that configuration refers to the basic structural composition of substances, and conformation refers to the spatial change of substances. Allosteric regulation can cause the conformational change of enzymes, but not the conformational change of enzymes.

　　In the cold winter, skiing is a very popular outdoor sport. Ski pants are one of the essential equipment in skiing. So, when you wear ski pants, do you need to wear pants inside? This question may vary from person to person, depending on personal preferences and needs.for a long time best baggy snowboard pants It has an extraordinary development speed, and I believe that the future will be as overwhelming as ever. https://ninetyroll.co/

　　Do you still need to wear pants under ski pants?

　　First of all, let’s know the characteristics of ski pants. Ski pants are mainly characterized by their waterproof, windproof and warm-keeping properties. Generally speaking, the outer layer of ski pants is made of waterproof material, which can prevent the infiltration of snow water and keep warm. The inner layer is usually made of warm-keeping materials such as fluff or wool to increase the warm-keeping effect. Therefore, the ski pants themselves have certain warm-keeping performance.

　　So, why would anyone wear pants under ski pants? There are several possible reasons. First of all, some people may think it is more warm. Especially in high-intensity skiing, the body will emit a lot of heat. If you wear a pair of pants under the ski pants, you can effectively stop the heat loss and keep your body warm. Secondly, for some people who have just started to learn skiing, wearing a pair of trousers can provide extra protection to prevent injuries when they fall. Finally, some people may think that wearing pants under ski pants can provide extra security for habit or psychological reasons.

　　Do you still need to wear pants under ski pants?

　　However, some people do not recommend wearing pants under ski pants. First of all, doing so may add extra weight and burden, which will affect the flexibility and comfort of skiing. Secondly, if you wear pants when you fall, it may cause friction between the skin and the snow, increasing the risk of injury. In addition, for some professional skiers, they may pay more attention to portability and flexibility, so wearing pants under ski pants may become a burden.

　　To sum up, whether it is necessary to wear pants under ski pants depends on personal needs and preferences. If you are a beginner in skiing or think it is necessary to increase warmth, it may be a good choice to wear pants under ski pants. But if you pay more attention to lightness and flexibility, or think that doing so may increase the risk of injury, then you may prefer not to wear pants under ski pants.

　　It should be noted that whether you choose to wear pants under ski pants or not, you should consider the warmth and comfort of the material when purchasing. At the same time, make sure that the pants you choose will not affect your normal sports and activities.

　　Do you still need to wear pants under ski pants?

　　In addition, if you choose to wear pants under ski pants, you should also pay attention to the following points:

　　1. Choose suitable materials: Try to choose lightweight and breathable materials to avoid adding extra weight and burden.

　　2. Pay attention to the right size: make sure that the pants you wear are not too tight or loose to avoid affecting comfort and flexibility.

　　3. Consider waterproof performance: If you plan to do activities in the snow for a long time, you should choose pants with waterproof performance to prevent snow water from penetrating and keep your body dry.

　　4. Keep safe: Although wearing pants under ski pants may increase some protection, you should still pay attention to keep safe and try to avoid unnecessary falls and collisions.

　　In a word, whether to wear pants under ski pants depends on personal preferences and needs. No matter what choice you make, you should consider the warmth and comfort of the material, and ensure that the equipment you choose will not affect your normal sports and activities.

　　Amino acid chain is the main and core component in protein, but it is not necessarily the only component. Some protein may include some atoms or small molecules, whose function may be to perform protein function and/or increase its stability. Chemically, these cofactor are diverse, which may be organic molecules or metal elements. Some of them are briefly combined with protein chain, while others are closely combined with protein chain (sometimes even by covalent bonds) and become an integral part of the whole protein. The former is called coenzyme coenzyme, while the latter is called prosthetic group. Most coenzymes are small organic molecules from vitamins. For example, the common coenzymes NADH and FADH2. These two molecules from vitamin B complex, the former from nicotinic acid (vitamin B3) and the latter from riboflavin (vitamin B2), play the role of high-energy electron acceptor/donor in redox reaction.in other words recombinant proteins It is possible to develop in a good direction, and there are still many places worth looking forward to in the future. https://www.alphalifetech.com/

　　Some enzymes use several different cofactors, such as Pyruvate dehydrogenase (PDH), which is a key enzyme in the catabolism of sugar. The catabolism of sugar begins with glycolysis, which is a biochemical reaction pathway with 10 steps, transforming one glucose molecule into two pyruvate molecules, and then carrying out the citric acid cycle of tricarboxylic acid, which further decomposes pyruvate and oxidizes it into CO2. Pyruvate dehydrogenase PDH works at the intermediate junction of the above two reaction pathways (namely glycolysis and triacid cycle), and is responsible for activating pyruvate and enabling it to enter the tricarboxylic acid cycle. Specifically, PDH catalyzes the oxidative dearboxylation of pyruvate and forms acetyl coenzyme A (ACoA), which is the activated form of pyruvate. PDH is not a single enzyme but a complex composed of three components, each of which participates in a different step of pyruvate activation and uses different coenzymes. The first component uses thiamine pyrophosphate (TPP), which is a derivative of thiamine (vitamin B1). TPP allows the first component of PDH to be oxidized and decarboxylated at the same time, thus transforming pyruvate into acetyl, and the remaining carbon is discharged as CO2. The importance of TPP will be reflected in its absence. In fact, if people can’t get enough thiamine from food, they will get beriberi, which will damage several major systems of the human body.

　　The second component in PDH uses lipoic acid. It is an auxiliary group covalently bound to PDH. The active part of lipoic acid is a cyclic structure, which contains two covalently bonded sulfur atoms (that is, S-S bonds) (Figure 2.2c). This active part catalyzes the transfer of acetyl to coenzyme coenzyme A(CoA), the third cofactor of PDH. CoA is pantothenic acid, also known as the derivative of calcium pantothenate. The combination of acetyl and pantothenic acid involves the reduction of S-S bond, and its cyclic structure will open and form two sulfhydryl groups (one SH), one of which will bind acetyl. Sulfhydryl group is easy to react chemically, which can be reflected in the fact that sulfhydryl group is easily influenced by arsenic, a toxic derivative of arsenic. To sum up, the formation of acetyl coenzyme A involves the reduction of S-S bond of pantothenic acid cyclic structure. In order to keep PDH active, these two sulfur groups must be re-oxidized to restore the S-S bond.

　　With the increasingly expensive housing prices, most people consider small apartments when buying new houses. The decoration style of three rooms and two halls, two rooms and one hall is also done by decoration companies! And small huxing, living room, kitchen, bathroom, bedroom functional areas are not large, how to decorate to make more rational use of space?In order to grow rapidly, رف التخزين Do not hesitate to change the strategy and rearrange the products, so as to obtain unexpected results. https://www.chulovs.com

　　Decoration company designers said that small huxing and complex huxing are very challenging for designers. Rational design can also make good use of space, making the sense of space stronger! In addition to keeping the room clean, the interior decoration of small apartment should not be too complicated. The home, decoration and furnishings have modern atmosphere and smooth lines, which can make the small room “enlarged”. When purchasing furniture, special attention should be paid to choosing styles without handles and complicated legs, and using walls to place shelves and lockers, so as to make the room look spacious and bright. In addition, we should make full use of the dead angle in the bedroom and try to put small furniture.

　　Decoration design of three rooms and two halls

　　Design plan of three bedrooms and two living rooms

　　Decoration design of three rooms and two halls

　　Design layout of three bedrooms and two living rooms

　　The designer of the decoration company suggested that as an important lighting window, there is no need to add more decoration and heavy curtains, but thin curtains should be used as much as possible. On the wall opposite the window, you can set up reflective decorations, such as mirrors and picture frames, to reflect all the scenery outside the window into the mirror, so as to expand the room’s vision and increase the three-dimensional sense. For small-sized kitchens, bedrooms and hallways, you can try to use the same wallpaper, or not decorate the walls too much to make the small space look spacious.

　　In the era of the Internet, we will be active in the network almost every day, and every time we visit the network, we will leave traces, one of the most important information.In the eyes of peers, Brand Protection IP Proxies It has good qualities that people covet, and it also has many loyal fans that people envy. https://proxy.cc/application/brand/?keyword=mj4fr_o

　　Is our ip address. Ip address is like our “ID card” in the network world. Once it is maliciously used or exposed, it may lead to information security.

　　Problems arise. And through the method of ip proxy, you can hide your own IP.

　　Ip proxy, also known as network proxy, is a kind of network service. The proxy server is located between the user and the target website and acts as a transit point. When the user sends the network,

　　When requesting, the request will first reach the proxy server, which will forward it to the target website. In this way, users can hide themselves.

　　The purpose of ip.

　　Now that we have understood the basic concept of ip proxy, what are the key factors in choosing ip proxy? This will be summarized from the following points:

　　1. A high-quality proxy server can provide users with a stable network speed to ensure that users can carry out network activities smoothly.

　　2. Ip proxy must take strict security measures to protect users’ privacy and data security, and at the same time, it can effectively prevent information leakage.

　　3. The wider the coverage of proxy server, the more choices users can have when choosing ip address, and at the same time, it is necessary to ensure the compatibility of proxy services.

　　Various devices and operating systems, so that users can use them more conveniently.

　　4. The price of agency service should be reasonable and transparent, and users can choose the appropriate package according to their own needs, so as to effectively avoid waste.

　　Health.

　　The main methods to correctly select ip proxy are as follows:

　　1. Before choosing an ip agent, you must be clear about your own needs, such as visiting a specific website, protecting personal privacy, etc., in order to choose the most suitable generation for you.

　　Manage services.

　　2. There are many ip proxy service providers in the market, and you can compare the speed, stability and security of different services when choosing them.

　　3. Before the formal purchase, you can try it out or test it, and determine whether the effect of ip proxy can meet your own needs according to the actual experience.

　　4. When choosing an ip proxy, we must understand its security and privacy protection. Generally speaking, high-quality ip proxy service providers should take strict security measures.

　　Shi, to ensure that the user’s private information is not leaked, but also should abide by the relevant laws and regulations, and shall not abuse the user’s personal information.

　　In a word, only by mastering the correct ip proxy selection method and using proxy services reasonably can we easily hide our ip addresses and protect them.

　　Personal privacy and network security.

　　In the busy life, every detail is related to our health and comfort. When the traditional mouse can’t meet the hand fatigue caused by long-term computer use, a mouse that really understands your needs is particularly important. Monster, a famous brand in the audio field, now redefines the standard of office mouse with its innovative work-M2 Pro wireless mouse, with ergonomic vertical design, making the balance between work and life more harmonious.contemporaneity Azilian knob Our competitors have not made large-scale improvements, so we should get ahead of everyone in the project. https://www.azilian.co

　　Imagine that facing the computer for several hours every day, your fingers keep sliding on the mouse and your wrists keep the same posture for a long time. Over time, it will not only affect work efficiency, but also cause occupational diseases such as wrist pain and finger stiffness. Magic sound M2 Pro wireless mouse is born to solve this pain point. It adopts a unique vertical design, naturally fits the curvature of the palm, effectively disperses the pressure on the wrist and fingers, and can keep the hands comfortable and reduce fatigue even after long-term use. This is not only a change in office style, but also an insistence on a healthy life attitude.

　　In today’s pursuit of efficiency and convenience, this mouse provides 2.4G wireless connection and Bluetooth dual-mode design, which can be easily paired with notebooks, desktops, tablets and mobile phones for seamless switching. You don’t need complicated cables to make your office space more tidy and orderly, and it also brings you unprecedented freedom and flexibility. Whether on the comfortable sofa at home or in the corner of a cafe, you can turn on your efficient work mode anytime and anywhere.

　　For users who often need to go out to work or travel, the endurance of the mouse is particularly important. Magic Sound M2 Pro wireless mouse has a built-in large-capacity rechargeable battery, which can be used for a long time without frequent battery replacement. Even if it is a high-intensity working day, it can be easily handled, so that you can completely bid farewell to power anxiety and concentrate on the work at hand. Moreover, it is also equipped with a convenient charging interface, which can quickly return blood with a simple connection and escort your office life.

　　What’s even more surprising is that this mouse has innovatively added the knob function. This seemingly simple design actually contains infinite possibilities. Whether it’s adjusting the volume, scrolling the page, or switching applications quickly, you can achieve one-button control with a slight rotation. This unprecedented operation experience not only improves work efficiency, but also makes every click full of sense of technology and futurity.

　　In this era of pursuing quality and health, Magic Sound M2 Pro wireless mouse has created a more comfortable, efficient and convenient office experience for us with its unique ergonomic design, intelligent connection mode, long-term endurance and innovative knob function.

　　A bunch of buffs and nerfs working in Elden Ring with the update of the new patch, how to take advantage of the recent updates? What are the biggest winners? Do not miss these builds in Elden Ring Patch 1.13 that can help you one-shot enemies.By comparison, it can be seen that ACNH items It has certain advantages and great cost performance. https://www.mtmmo.com/d2r-ladder-items

　　Elden Ring 1.13 Best Builds: Top 3 One-Shot Builds for Elden Ring DLC After Patch 1.13

　　Recent updates have elevated some previously ordinary builds to the top tier in Elden Ring DLC, what are the best ER weapons to use? Here are some excellent options listed for the top 3 best Elden Ring 1.13 builds.

　　1. Euporia (Twinblade)

　　The first one is the Euporia build, which benefits from the increased holy damage and longer duration from the buffs. Euporia is the primary weapon, which is the biggest winner of Elen Ring 1.13 Patch, in combination with Erdtree Seal, allowing high incantation scaling. The Euporia Vortex is amazing at dealing massive damage to enemies. Utilize talismans such as Shard of Alexander to boost the damage of the Ash of War, Sacred Scorpion Charm to increase your holy damage, and Dragoncrest Greatshield Talisman offers extra defense. When it comes to the armor, the Horned Warrior Helm gives you extra strength, and the Rakshasa set is good for damage enhancement.

　　Stats

　　- Vigor 60

　　- Mind 22

　　- Endurance 28

　　- Strength 47

　　- Dexterity 30

　　- Intelligence 9

　　- Faith 80

　　- Arcane 8

　　Gear

　　- Weapon: Euporia +10, Erdtree Seal +10/Sacred Buckler

　　- Armor: Horned Warrior Helm, Rakshasa Armor, Rakshasa Gauntlets, Rakshasa Greaves

　　- Talismans: Shard of Alexander, Sacred Scorpion Charm, Rotten Winged Sword Insignia, Dragoncrest Greatshield Talisman

　　- Crystal Tear: Stonebarb Cracked Tear, Faith-knot Crystal Tear

　　2. Red Bear¨s Claw

　　The poise damage of normal attacks with Beast Claws including Red Bear¨s Claw increased in PvP, and Red Bear Hunt got increased attack power and increased spell value, making it harder to get interrupted when using it. This build can provide good poise damage and bleed buildup in the game after Patch 1.13. White Mask and Lord of Blood¨s Exultation are used for bleed buildup. In terms of the stats, going with 60 points on both strength and dexterity, and leave 25 points for faith to ensure you can buff with Golden Vow.

　　Stats

　　- Vigor 60

　　- Mind 28

　　- Endurance 32

　　- Strength 60

　　- Dexterity 60

　　- Intelligence 9

　　- Faith 25

　　- Arcane 8

　　Gear

　　- Weapon: Red Bear¨s Claw +10, Blood Beast Claw +25

　　- Ash of War: Red Bear Hunt

　　- Armor: White Mask, Armor of Solitude, Rakshasa Gauntlets, Rakshasa Greaves

　　- Talismans: Lord of Blood¨s Exultation, Dragoncrest Greatshield Talisman, Two-Headed Turtle Talisman, Shard of Alexander

　　- Crystal Tear: Stonebarb Cracked Tear, Opaline Hardtear

　　3. Rain of Fire

　　Patch 1.13 brings increased attack power and reduction in the interval between each hit of the Rain of Fire incantation, you will be easier to pull off and deal massive damage to larger enemies. The main weapon is the Fire Knight¨s with a Flame Art and having Flame Spear on it, to take advantage of high faith. You can replace it with Blasphemous Blade. Use the Fire Knight¨s Seal to get 10% increased damage on the Rain of Fire, and Erdtree Seal increases Faith scaling. What to note is the Rain of Fire has a long cast duration, limiting mobility during the animation, so it is best used from a safe distance or when the enemy is stunned or immobilized.

　　Stats

　　- Vigor 60

　　- Mind 30

　　- Endurance 28

　　- Strength 48

　　- Dexterity 18

　　- Intelligence 9

　　- Faith 70

　　- Arcane 8

　　Classification of amino acids, several special amino acids, molecular structure and physical and chemical properties of protein, composition of nucleic acid, double helix structure of DNA, basic concept of enzyme, Michaelis equation, coenzyme composition.Actually, it’s not just this reason, small molecules Its own advantages are also obvious, and it is normal for the market to perform well. https://www.all-chemistry.com/

　　Memorize 20 kinds of amino acids and try to remember English abbreviations and codes as much as possible, because exams often appear directly with codes. Protein’s molecular structure often examines the manifestations of various levels of structure and their bonds. The physical and chemical properties of protein and the purification of protein usually use the physical and chemical properties of protein to purify protein without destroying the structure of protein. Pay attention to the identification of amino acids and physical and chemical properties of protein. The basic unit of nucleic acid is nucleotide, which is composed of multiple nucleotides, and the connecting bond between nucleotides is 3′, 5′- phosphodiester bond. DNA double helix structure, in which two bases exist in strict accordance with A = T (two hydrogen bonds) and G triple C (three hydrogen bonds), and the characteristics of various RNA.

　　In addition, we should pay attention to some commonly used concepts in nucleic acid problem solving. The first thing that enzymes should pay attention to is some basic concepts, such as ribozyme, deoxyribozyme, enzyme activity center, isozyme, isomerase and so on. The key point of the Metric Equation test is V=Vmax[S” target=_blank>/Km+[S” target=_blank>, which explains the equation of the relationship between the concentration of enzymatic reaction and the reaction speed. In the exam, candidates are sometimes asked to do simple calculations according to this equation before they can answer. The difference of several inhibitors.

　　According to the characteristics of allosteric enzymes, it should be noted that allosteric regulation can cause conformational changes of enzymes. It is important to pay special attention here that configuration refers to the basic structural composition of substances, and conformation refers to the spatial change of substances. Allosteric regulation can cause the conformational change of enzymes, but not the conformational change of enzymes.