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      "body": "Congratulations @yohandri! You received a personal award!\n\n<table><tr><td>https://steemitimages.com/70x70/http://steemitboard.com/@yohandri/birthday2.png</td><td>Happy Birthday! - You are on the Steem blockchain for 2 years!</td></tr></table>\n\n<sub>_You can view [your badges on your Steem Board](https://steemitboard.com/@yohandri) and compare to others on the [Steem Ranking](https://steemitboard.com/ranking/index.php?name=yohandri)_</sub>\n\n\n###### [Vote for @Steemitboard as a witness](https://v2.steemconnect.com/sign/account-witness-vote?witness=steemitboard&approve=1) to get one more award and increased upvotes!",
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      "body": "Coca cola is something people will keep consuming even though it might not be healthy. \n\nIt tastes good, and it's a good beverage for a lot of occasions, and since its negative effects are for the long term,  that's not a reason strong enough to make people consume less of it. \n\nBesides, there is the \"myth\" that Warren Buffet always drinks Coca cola, but I am not sure if that is true.",
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      "body": "Thank you I will follow your advice in my publications, I hope I can grow in the Steem-Stem group",
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      "body": "# Do you know what happens in your body when you consume Coca-Cola:\n\nThe fact that it serves to clean the engines of the vehicles or to unclog pipes can give us an idea of the type of components that Coca Cola includes, Thanks to different research that has been done in recent years, it has been confirmed that many already feared: CoCoca-Cola  serious effects on our health from the first moment we ingest it. For several years they have been doing different health campaigns with which it is intended that people eliminate beverages such as Coca-Cola-Colarom their diet. However, the figures of consumers of this product continue to be very alarming, since it is estimated that every 16 hours, 1,600 million Coca Cola products are consumed in the world.\n\n![](https://steemitimages.com/DQmYnkdPxQZmbagLVSscRezFYsjULZgmZ73mwLX9oZc2Feu/image.png)\n<center>[Public Domain](https://www.flickr.com/photos/simon_cocks/4915110442)</center>\n\n# What are the harmful effects of Coca-Cola:\nCoca-Cola is full of compounds that are harmful to our health, which can lead to problems in the short and long term. Just know that a single can or bottle contains 10 tablespoons of sugar, in addition to other chemicals that affect different important organs of our body.\n\n\n# What happens when you consume Coca-Cola:\nAt 10 minutes: receiving 10 tablespoons of sugar in one fell swoop causes a devastating effect on our body. The reason why we do not vomit is due to the production of phosphoric acid that our body provides.\n\n* At 20 minutes: glucose causes insulin levels to rise causing the liver to convert all of the sugar into fat. Remember that a single can or bottle contains up to 10 tablespoons of sugar.\n\n* At 40 minutes: our body will have completely absorbed caffeine. As a result, the pupils dilate, the blood pressure rises and the liver releases more sugar in the torrent. This, in turn, causes the adenosine receptors (the predominant molecule in the sleep process) to block and prevent us from becoming sleepy.\n\n* At 45 minutes: our body begins to produce more dopamine, a substance that stimulates our cerebral pleasure centers. This type of effect is compared to that produced by heroin.\n\n* At 60 minutes: after an hour it is likely that we feel that desire to urinate. What we do not know is that when urinating we will be evacuating calcium, magnesium, and zinc, which were directed towards the bones, among other important substances that could not be absorbed by our body. As time goes by, it begins to have a low sugar and it is likely that the consumer is slow with their activities and lazy. As we have already mentioned, in addition to its high sugar content, Coca-Cola also has other components that are harmful to health. Here we share its main components and effects on our health.\n\n* Carbonated water: this ingredient causes gastric secretion, increasing the acidity of the gastric juice and also Flatulence.\n\n* Sodium cyclamate or sugar substitute: it is a component that gives a taste up to 200 times sweeter than sugar. The research found that its use increases the risk of bladder cancer, so in 1969 it was banned by the US Food and Drug Administration. (FDA, for its acronym in English).\n\n* Aspartame: is another substitute for sugar that was also banned by the FDA. When exposed to elevated temperatures, it breaks down into methanol (alcohol) and phenylalanine, which are substances that destroy the optic nerve and can cause blindness.\n\n* Orthophosphoric acid: is a very acid component that can cause skin and eye irritation.\n\n<center>![](https://steemitimages.com/DQmcvG5ty9EhSUkjLvJmNigjag9jNuVUqNFgnRwzdqsi3W5/image.png)</center><center>[Public Domain](https://en.wikipedia.org/wiki/Mentos)</center>\n\n# Alternative uses of Coca-Cola:\n\n* Coca Cola is a beverage that has been used to clean the vehicle's engine.\n\n* In the United States, the police use Coca-Cola to clean the road of possible blood spillage after a traffic accident or murder.\n\n* Coca-Cola is a substance used to remove rusted stains on chrome surfaces and to clean the corrosion of car batteries.\nIn India, farmers use Coca-Cola as pesticides for the extermination of crop pests, as it is an economic and very effective product.\n\n* One of the most famous and effective tricks is to use Coca-Cola to uncover the pipe.\n\n# References\n### https://www.youtube.com/watch?v=6FCh2L6pQkA\n### https://steptohealth.com/know-happens-body-drink-coca-cola/\n### https://www.eatthis.com/what-happens-when-you-drink-soda/",
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      "author": "alexdory",
      "body": "Good article, I have actually covered the ways to make drinking water through the use of filters, removal of water hardness and reverse-osmosis filtration, a few articles back. You have went more in depth and I agree with your findings. \n\nIn order to be more visible to SteemSTEM you can engage the other authors and comment, complete or question their articles. People tend to remember the other people they have meaningful contact with so you will get free publicity. \n\nhttps://media.discordapp.net/attachments/424101899298537472/424203505692049432/Engagement_Officer.png?width=400&height=183",
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      "author": "yohandri",
      "body": "# Processing processes:\n\nSurface water treatment plants are generally used as a sequence of more or less standard processes. After closing large objects such as fish and sticks, chemical coagulants are added to the water to achieve the tiny particles in suspension that cloud the water attract each other to form \"flocs\". Flocculation-the formation of larger, smaller, common floc-sized flocs to achieve particles and small flocs so that they \"collide\" with each other, adhere, and form a larger flock. When the flocs are large and heavy enough to settle, the water moves to the sedimentation or decantation stages. When most solids have settled, there are more forms of filtration and sea through sand or membranes. Disinfection is usually the next step. After disinfection, chemicals can be added to the pH, to prevent corrosion of the distribution system, or to prevent tooth decay. Ion exchange or activated carbon can be used in some parts of this process to eliminate organic or inorganic contaminants. Groundwater sources have a higher initial quality and need less treatment than surface water sources.\n\nPoint-of-use and start-point devices are simpler and use a limited number of technologies. In most countries, drinking water that is non-pathogenic and complies with international regulations is available in each customer's tap. In addition to that, a significant number of consumers in the developed world for point-of-entry and exit devices or another access point for the public water supply system. However, the public water supply and public water supply patterns, which provide water for pathogens are not available and success is mainly measured by reducing the risk of diarrheal or other diseases. Therefore, a point-of-use technology that may be appropriate for one location may not be so and is not recommended for another.\n\n<center>![](https://steemitimages.com/DQmPzf8dspqANrBqbAud1eyZoHEVKjLa7iW75Q5mMXsqpQi/image.png)</center><center>[Public Domain](https://en.wikipedia.org/wiki/Mineral_water)</center>\n\n# Coagulation - Flocculation:\n\nCoagulation and flocculation practices are essential pre-treatments for many water purification systems. In the conventional coagulation-flocculation-sedimentation process, a coagulant is added to the source water to create an attraction between the particles in suspension. The mixture is stirred slowly to induce the grouping of particles together to form \"flocs\". The water is then transferred to a quiet deposit of sedimentation to sediment the solids.\n\nDissolved air flotation systems also add a coagulant to flocculate the particles in suspension; But instead of using sedimentation, pressurized air bubbles push them towards the surface of the water from where they can be extracted. A flocculation-chlorination system has been developed as a point-of-use technology, especially for developing countries. It uses small packages of chemicals and simple equipment such as buckets and a cloth filter to purify the water.\n\nFinally, lime softening is a technology commonly used to \"soften\" water - that is, to remove mineral salts of calcium and magnesium. In this case, the material that is decanted is not the sediment in suspension but the dissolved salts.\n\n\n# Filtration systems:\n\nFiltration systems treat water by passing it through beds of granular materials (eg, sand) that remove and retain contaminants. Conventional, slow, sand and diatomaceous earth filtration systems all do a good job of removing most protozoa, bacteria and viruses (if coagulation is used). Usually, bag and cartridge filters do not eliminate viruses and very few bacteria.\n\nConventional filtration is a multi-stage operation. First, a chemical coagulant such as iron or aluminum salts is added to the source water. Then, the mixture is stirred to induce the binding of the small particles in suspension to form larger lumps or \"flocs\" easier to remove. These coagulated masses, or \"flocs,\" are allowed to settle out of the water, so that they carry away many contaminants. Upon completion of these processes, the water is passed through filters so that the remaining particles adhere to the filter material by themselves.\n\nDirect filtration is similar to conventional filtration, except that after adding the coagulant, and after shaking the mixture, there is no separate phase for sedimentation. Instead, the particles in suspension are destabilized by the coagulant and thus adhere more easily to the filter material when the water is subsequently filtered.\n\nSlow sand filtration systems do not have a coagulation phase and usually do not have a sedimentation step either. Slow and descending water is induced through a bed of sand two to four feet (0.6 to 1.2 meters) deep. A biologically active layer forms along the upper surface of the sand bed, trapping small particles and degrading some organic pollutants.\n\nBiological sand filtration (Biosand) is a filtration system at the point of use analogous to slow sand filtration, but its effectiveness is much less established than the latter.\n\nFiltration with diatomaceous earth uses as filter material the fossilized shells of tiny marine organisms through which the water is passed without treatment. The earth physically filters particulate contaminants from water.\n\nBag and cartridge filters are simple, easy-to-use systems that use a woven bag or rolled filament cartridge or a shirred filter to physically filter microbes and sediment from the source water.\n\nCeramic filters are mainly used in point-of-use applications. In developing countries, these are manufactured locally, sometimes in self-financed microenterprises.\n\nMost filtration systems use \"backwash\" to clean the system. This produces wastewater that must be handled properly.\n\n<center>![](https://steemitimages.com/DQmaYSsAdV6WMjKbuEFGQ1gicuSqyFQ12NwxQefpZ21SEDu/image.png)</center><center>[Public Domain](http://www.arpc.afrc.af.mil/News/Article-Display/Article/600314/drink-up-airmen-train-to-purify-warfighter-water/)</center>\n# Membrane processes:\n\nMembrane systems for water treatment were originally used only in desalination projects. But improvements in membrane technology have made them an increasingly popular option for the elimination of microorganisms, particulates and natural organic materials that affect the taste of water and cloud its clarity.\n\nThe membranes for water treatment are thin sheets of material that allow contaminants to be separated according to their characteristics such as size or electrical charge. The water passes through a membrane; but depending on their size, larger particles, microorganisms and other pollutants are separated.\n\nSome of these systems are pressure driven, depending on the water pressure to separate the particles according to their size. Microfiltration uses the largest pore size, and can remove sand, silt, clays, algae, bacteria, Giardia and Cryptosporidium. Ultrafiltration can also eliminate viruses. Nanofiltration systems provide almost complete protection against viruses, eliminate most organic pollutants, and can reduce water hardness. Reverse osmosis systems are dense membranes that remove almost all inorganic contaminants and almost everything except the smallest organic molecules.\n\nElectrodialysis combines membrane technology with the application of electrical current, to separate the pollutants according to their electrical charge. Unlike other membrane processes, spring water never passes through the membranes during electrodialysis. This option is not used in both large-scale water treatment facilities and some of the other technologies described in this document. On the contrary, it is used mainly in medical and laboratory applications that need ultrapure water.\n\nMembranes, especially reverse osmosis membranes and nanofiltration, can be a good option for smaller-scale water treatment systems that face a wide range of contaminants. However, they often produce larger volumes of wastewater (or \"concentrate\") than most other treatment systems (up to 15 percent of the total volume of treated water) and can be clogged with clay or organic materials If the source water rich in particles does not filter first.\n\nUsually, maintenance is not difficult, but it can be very expensive since the first necessary action is to replace the membrane as necessary. Maintenance problems tend to involve leaking and contaminated membranes.\n\n\n# Chemical disinfection / Oxidants:\n\nDisinfection systems are used to combat diseases spread in water and caused by bacteria or viruses. These processes neutralize pathogens by treating water from sources with chemical additives, or by exposure to ultraviolet light. These treatment systems are often inexpensive and can easily reduce their capacity for low volume treatment facilities.\n\nFree chlorine, chloramines and chlorine dioxide are some of the most common disinfectants. Chlorination is the most popular (and oldest) class of chemical additives. Chlorine is also an oxidant, so it helps eliminate iron, hydrogen sulfide and other minerals.\n\nOzone, a colorless gas, treats organic and inorganic contaminants in much the same way as chlorination but is even more effective against bacteria and other germs. Ozone systems are not common worldwide because they require a lot of infrastructure, and their implementation can have a high cost.\n\nUltraviolet light is an invisible part of the electromagnetic spectrum that kills bacteria and viruses in water exposed to its rays, and is typically produced by mercury lamps. The UV process is inexpensive and is often used in small-scale facilities, but is not as effective as other disinfectants in surface water supply sources that contain many suspended particles.\n\n\n# Adsorption and ion exchange systems:\n\nAdsorption systems treat water by adding a substance, such as activated carbon or alumina (aluminum oxide), to the water supply source. Adsorbents attract contaminants through chemical and physical processes that cause them to 'adhere' to their surfaces for later disposal.\n\nBy a large margin, the most commonly used adsorbent is activated carbon - a substance similar to common but highly porous carbon. Activated carbon powder is often used when temporary quality problems arise; it can simply be added to the water and disposed of with the waste sludge. The activated granular carbon is often distributed in a tray through which the source water is slowly passed or percolated.\n\nActivated alumina treatment is used to attract and remove contaminants, such as arsenic and fluoride, that have negatively charged ions. However, this option can be expensive and may require complicated maintenance of the system. In addition, water may require pH adjustment before the adsorption column, and often the problem of excessive aluminum waste arises. For regeneration acids and bases are required.\n\nThe ion exchange uses a resin that removes charged inorganic contaminants such as arsenic, chromium, nitrate, radium, uranium and excess fluoride by exchanging them for innocuous charged ions on its surface. It works best with water without particles and you can modify its scale to adapt it to any size of treatment facility. Ion exchange is most often used to remove hardness (cationic resin) or nitrate (anionic resin). In both instances, it can be regenerated with salt water. The use of ion exchange to eliminate radionuclides is complicated by the fact that these materials accumulate in the resin and occur at high levels in the regenerant, to greatly complicate operations.\n\nActivated carbon is usually preferred to remove organic contaminants, while ion exchange is often better to remove soluble inorganic molecules.\n\n\n# Air extraction systems:\n\nAir extraction systems, also known as aeration systems, mix air with a water supply. The objective is to generate the maximum possible air-water contact area for volatile organic chemicals and dissolved gases such as radon and hydrogen sulfide to pass from water to air.\n\nRectification tower or drained bed systems use a distributor to introduce water evenly through the top of a tower equipped with plastic beds, ceramics or metal objects designed to maximize air-water contact. The air is pushed or pulled up through the tower in a counter-current direction to the water.\n\nTray aeration systems distribute the binder materials in vertical trays and drain water through them.\n\nDiffuse aeration systems force compressed air through diffusers in the lower part of a tank. Mechanical aeration systems work by vigorously shaking the surface of the water with a mixer.\n\nAlthough it is simple in principle, air extraction systems tend to suffer from obstructions due to particulate bacteria that produce corrosion and precipitation of calcium carbonate. The costs of the treatment increase significantly if it is necessary to pre-treat the water or if the air in the system must be purified before discharging it into the atmosphere.\n\nNone of the air extraction systems is designed to be effective against microorganisms. All require a reliable power source, except tray aerators, which are designed to use natural air convection and the force of gravity, and therefore can often be operated without electrical power.\n\n\n# Solar treatment:\n\nWater treatment by solar energy takes advantage of the natural cleaning processes found in nature and improves them to obtain more efficient results. Compact units and even laptops are popular in homes. These can be a good treatment option in developing nations with plenty of sunny days because they are inexpensive and investment and infrastructure are almost nil.\n\nSolar distillation involves placing unpurified water in a container, to evaporate it by means of the sun's rays, and then condensing it in a separate container. Most contaminants such as salts, heavy metals and microbes are left in the container of unpurified water, which can be discarded periodically.\n\nDisinfection by solar radiation uses the ultraviolet rays of the sun to eliminate pathogens. A plastic or glass container containing untreated water is placed on a roof or on a corrugated iron surface. With enough time and sunlight, ultraviolet light combined with high temperatures will eliminate most viruses, bacteria and protozoa.\n\n\n### https://www.koshland-science-museum.org/water/html/es/Treatment/Membrane-Processes.html\n### http://www.maristasccv.es/content/visita-la-estaci%C3%B3n-de-tratamiento-de-agua-potable\n### http://trasisa.com/index-1.html\n###  http://penagroup.com/tsratamiento-primario-aguas-residuales-sistemas-filtracion/",
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      "body": "Hola @yohandri, upv0t3\r\nEste es un servicio <b>gratuito</b> para nuevos usuarios de steemit, para apoyarlos y motivarlos a seguir generando contenido de valor para la comunidad.\r\n<3 Este es un corazón, o un helado, tu elíges\r.\n<h1> : ) </h1>\r\nN0. R4ND0M: \r\n8400 3116 8382 9119\n8368 7057 6816 3080\n8055 1411 3788 7265\n1693 5291 2121 9925\n",
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      "body": "my two beautiful children every day I love them more, thanks Lord your blessings and thank you for giving me these two children so beautiful.! \n\n![IMG_20180228_195144.jpg](https://steemitimages.com/DQmZxRogdJ4EcYmGAjbL6HSMuoQ8d6hX77ATrsYJZCGsVVi/IMG_20180228_195144.jpg)\n\nthat Photo spelling taken with my cell Motorola G 1, beautiful my children.",
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      "body": "Mis dos hermosos hijos cada día los amo más, gracias señor por tu bendiciones y gracias por darme esos dos hijos tan hermosos.  \n\n![IMG_20180228_195144.jpg](https://steemitimages.com/DQmZxRogdJ4EcYmGAjbL6HSMuoQ8d6hX77ATrsYJZCGsVVi/IMG_20180228_195144.jpg)\n\nQue foto grafía tomada con un celular por mi, hermoso mis hijos.",
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      "body": "Congratulations @yohandri! You have completed some achievement on Steemit and have been rewarded with new badge(s) :\n\n[![](https://steemitimages.com/70x80/http://steemitboard.com/notifications/posts.png)](http://steemitboard.com/@yohandri) Award for the number of posts published\n\nClick on any badge to view your own Board of Honor on SteemitBoard.\n\nTo support your work, I also upvoted your post!\nFor more information about SteemitBoard, click [here](https://steemit.com/@steemitboard)\n\nIf you no longer want to receive notifications, reply to this comment with the word `STOP`\n\n> Upvote this notification to help all Steemit users. Learn why [here](https://steemit.com/steemitboard/@steemitboard/http-i-cubeupload-com-7ciqeo-png)!",
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      "body": "http://i.imgur.com/ikEQBTz.jpg\n## Woff, woff!\n#### Hello @yohandri, Nice to meet you!\nI'm a guide dog living in KR community. I can see that you want to contribute to KR community and communicate with other Korean Steemians. I really appreciate it and I'd be more than happy to help.\n\nKR tag is used mainly by Koreans, but we give warm welcome to anyone who wish to use it. I'm here to give you some advice so that your post can be viewed by many more Koreans. I'm a guide dog after all and that's what I do!\n\nTips:\n\n- **If you're not comfortable to write in Korean, I highly recommend you write your post in English rather than using Google Translate.**<br>Unfortunately, Google Translate is terrible at translating English into Korean. You may think you wrote in perfect Korean, but what KR Steemians read is gibberish. Sorry, even Koreans can't understand your post written in *Google-Translated* Korean.\n- So, here's what might happen afterward. Your Google-Translated post might be mistaken as a spam so that whales could downvote your post. Yikes! I hope that wouldn't happen to you.\n- If your post is not relevant to Korea, not even vaguely, but you still use KR tag, Whales could think it as a spam and downvote your post. Double yikes!\n- If your post is somebody else's work(that is, plagiarism), then you'll definitely get downvotes.\n- If you keep abusing tags, you may be considered as a spammer. It may result to put you into the blacklist. Oops!\n\nI sincerely hope that you enjoy Steemit without getting downvotes. Because Steemit is a wonderful place. See? Korean Steemians are kind enough to raise a guide dog(that's me) to help you!\n\nWoff, woff! 🐶",
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      "body": "전혀이해가안돼!",
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      "author": "yohandri",
      "body": "カーニバルクイーン2018年\n私の最後の4歳の娘、ヨハンゲリブラチョーノは、彼女の名前の学校のカーニバル女王として博士の名前を選んだ。 彼は4年間勉強中のJuan German Roscioです。 彼女の偉大なカリスマ性と安全保障で、彼女は大きな喜びを表し、施設の女王であることを称賛したので、選ばれることは非常に喜ばしいです。\n\n![](https://steemitimages.com/DQmS1y2HwuSF8Kog2ZmotT6onMv4YJKTrPqhK1zzBCYHv3c/image.png)\n\n彼女の母と祖母の助けを借りて、カーニバルの週の最初の治世は、大きなピンクのドレスと、彼女の最高を与えるために喜んで喜んで完全なカーニバルの女王と王冠を言うバンダナを着ていた。\n\n![](https://steemitimages.com/DQmZME6ETdzaHDXwL6wHfvjWLHMJQBb9xtysD2Y5JeayxFq/image.png)\n\n彼女の美しい笑顔で、彼女は私の日を照らし、私の心の女王です。\n\n![](https://steemitimages.com/DQmYpKk6nYT7rpr5c5ufjaih8yha9curuzVBfv8Pp9RHQxi/image.png)\n\nあなたの先生と学校の友達と一緒に写真が表示されます。\nあなたの学校を代表しなければならない毎日のような素晴らしい感情の週。\nベネズエラでのカーニバル週は、子供が家族を集めて観光地やビーチに集まるための理由であることを考えると、大きな喜びと祝賀を祝って顕著です。最高の時間は、異なる衣装を持つ子供たちを見ることです 喜びでいっぱいの通り 友人私は、今週の偉大な感情が、愛する人々と合流することを願っています。\n\n![](https://steemitimages.com/DQmWeesxj7KXfsDNCSgNECytzHEzLkdHs8YPnYFgntxFsSZ/image.png)\n\n教室の最後の週の終わりに、教師は、すべての子供たちが、お母さんの助けを借りて祖母が見ているように彼女を偽装したので、祖母が見逃すことのできない私の美しい王女として、おばあちゃんとおばあちゃんとして服を着らなければならないと言った とても美しい写真です。\n私はベネズエラからの私のポストの挨拶が好きで願っています",
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      "author": "paulo380",
      "body": "In regard to nucleus , i think it harbor nothing else than the DNA? Can you please clear me on this",
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      "body": "# INFORMATION AND FEATURES:\n\nAll animals are multicellular organisms and their basic unit is the eukaryotic cell. It differs from the prokaryotic cell, typical of the Monera kingdom organisms, mainly due to the presence of a differentiated nucleus surrounded by a nuclear membrane. Eukaryotic cells also have the capacity to form multicellular organisms and coexist with different types of cells specialized in specific functions within complex living beings. Examples of cells with different forms and functions in the members of the Animalia kingdom are the neurons of the nervous system, the leukocytes of the immune system and the ovules and sperm of the reproductive system, among many others.\n\n# \"A human being has more than 200 different types of cells.\n\nAnimal cells have a diameter smaller than that of plant cells and do not have a cell wall or chloroplasts. Animal cells are distinguished from plants by lack of cell wall and chloroplasts.\n\n<center>![](https://steemitimages.com/DQmZFLLJoVbLyGbznJUynPqw2BhzqxmwuJwp62YUfyg23rz/image.png/)</center><center>[source](http://bibliotecarioamano.blogspot.com/2016/11/)</center>\n\n# PARTS OF THE ANIMAL CELL\n### Core.\n\nThe nucleus of the cell is the control center of it. In short, he is responsible for dictating instructions for the proper functioning of many biological processes. It is a very important element since it harbors the deoxyribonucleic acid (DNA) that contains the genetic information that is going to be transmitted when other cells are generated.\n\nThe DNA linked to proteins forms chromatin, which, when condensed at the time of cell division, generates structures similar to threads called chromosomes.\n\nThe nucleus is an organelle since it is found in the cytoplasm. It occupies up to 10 percent of the space inside the cell and is the largest component of the cell.\n\n### Cell or plasma membrane.\n\nIt is a thin layer that surrounds the cytoplasm and separates the cell from its environment. Its main function is to protect the cell from the outside and facilitate the exchange of materials.\n\nThis membrane has pores or protein channels that communicate the interior with the external environment, thanks to which the entry of useful substances for nutrition occurs and the exit of those that are waste. It is a semipermeable membrane.\n\nIts composition is characterized by the presence of a double layer of phospholipids with embedded proteins.\n\nIt also has a fundamental role in other important processes such as cell adhesion and cellular communication that allows the exchange of information with other cells or tissues.\n\n# The cell membrane uses four transport methods:\n\n-Osmosis passive and diffusion.\n\n-Active transport.\n\n-Endocytosis\n\n-Exocytosis\n\nFinally, the cell membrane helps to fix the cytoskeleton, so it is vital to maintain the shape of the cell and allow it to be part of large arrays of cells that shape the tissues.\n\n# Cytoskeleton\n\nThe cytoskeleton gives the form and maintains the structure of the cell and is fundamental in the processes of endocytosis and cell division.\n\nIn prokaryotic cells, the cytoskeleton is composed of microfilaments and microtubules.\n\n# Cytoplasm.\n\nThe cytoplasm is all the cellular material with the exception of the nucleus, that is, it includes all the organelles or specialized parts of the cell and the cytosol, a colorless substance of semiliquid consistency in which numerous molecules are found and carried out. some chemical reactions.\n\nIt is in the cytoplasm that most cellular activities occur, including several metabolic pathways such as glycolysis and processes such as cell division.\n\nThe cytosol is the part of the cytoplasm that is outside the organelles delimited by membranes and is equivalent to approximately 70% of the cell volume.\n\n<center>![](https://steemitimages.com/DQmTBg8RRPTyAF8kYuEeTc8uSzRsfMnRwtuskE55ZtL8X4G/image.png/)</center><center>[source](http://morfologiaunefa.blogspot.com/2007/09/la-clula-como-unidad-biolgica.html/)</center>\n\n# ORGANELOS:\nEndoplasmic reticulum. It is a system of channels and flattened and interconnected sacks wrapped in a membrane. The elaboration, storage and transport of some substances takes place in this organelle. It also provides internal support. Although the endoplasmic reticulum is present in most eukaryotic cells, it is not found in red blood cells or sperm. There are two types of endoplasmic reticulum, the smooth and the rough. The latter has that appearance because it has ribosomes attached to its surface. However, these ribosomes are not a structural part of the reticulum, since they freely adhere or detach from the membrane.\n\n# Ribosomes\n\nRibosomes are the organelles that synthesize the vital proteins for many cellular processes. They are complex molecular machines that are found in all living cells. Its shape is spherical and are formed by ribosomal RNA and proteins. These organelles can be found in two forms: free in the cytoplasm or associated with the membranes of the rough endoplasmic reticulum and perform their function of making protein molecules by binding amino acids. However, the ribosomes follow the order specified by the messenger RNA that transfers the genetic code of the nuclear DNA to indicate the order in which the amino acids must be linked. The ribosomes have two parts, the minor subunit that is responsible for reading the RNA and the larger subunit whose function is to join the amino acids to create a peptide chain.\n\n# Mitochondria\n\nMitochondria are the producers of energy in the cell. They produce it by means of the process known as cellular respiration and it is where the Adenosine Triphosphate (ATP) is made, a molecule that constitutes the main source of energy usable by the cell to perform its functions. Mitochondria synthesize ATP from glucose, fatty acids and amino acids. They do not have a defined structure since they deform easily but are usually elongated. Apart from the production of energy, mitochondria are related to the processes of cellular communication, cell differentiation and apoptosis or programmed cell death, but also have control over the cell cycle and cell growth. The number of mitochondria in a cell varies widely. For example, erythrocytes or red blood cells do not contain mitochondria but liver cells have around 2,000.\n\n# The Mitochondria have several parts:\n\n-External mitochondrial membrane.\n\n-Internal mitochondrial membrane.\n\n-Intermembranous space.\n\n-Matrix.\n\n-Crests.\n\n<center>![](https://steemitimages.com/DQmaLYrMZ9esyvRpeCKGhxrbBWsMwcmtoU7qof22kqfbUFi/image.png/)</center><center>[source](https://www.elespectador.com/noticias/actualidad/cuanto-mas-grande-el-animal-mas-pequeno-y-de-menor-cali-articulo-600164/)</center>\n\n\n# Golgi apparatus.\n\nIt is the organelle that receives proteins and lipids from the endoplasmic reticulum and where the collection of all the substances that the cell expels to the lysosomes or through the plasma membrane is carried out. The Golgi apparatus completes the manufacture of some proteins and packages others by coating them with a membrane before being sent to its destination, \"labeling\" these proteins to send them to where it belongs both inside and outside the cell.\n\n### Its main functions are:\n\n* -Modification of proteins.\n\n* -Cellular secretion.\n\n* -Production of plasma membrane.\n\n* - Formation of lysosomes.\n\nAs part of the administration of traffic, the Golgi apparatus is fundamental in the secretion of substances that are expelled from the cell.\n\n### It has three parts:\n\n* Regió cis-Golgi.\n\n* Medial region.\n\n* Trans-Golgi Region\n\n\n<center>![](https://steemitimages.com/DQmX7N6djLU1kmp2ZrRwh6rRiG82QQ4PaATjMioZQAGMqqQ/image.png/)</center><center>[source](http://www.bioenciclopedia.com/la-celula-animal/)</center>\n\n# Lysosomes\n\nLysosomes are spherical vesicles that contain hydrolytic enzymes that facilitate the assimilation of substances by making them smaller. Additionally, they are responsible for eliminating waste through the digestion of unwanted substances through the cytoplasm. Lysosomes protect the cell from foreign bodies such as viruses and bacteria and digest even parts of the cell that are discarded as organelles that are replaced. These organelles contain more than 60 different enzymes that come from the Rough Endoplasmic Reticulum and serve to perform their functions of decomposing and digesting biomolecules.\n\n# Peroxisomes\n\nThey are organelles that house a large amount of enzymes necessary for various metabolic reactions that aims to dispose of toxic peroxides for the cell. Its main function is to break down long chain fatty acids. In animal cells, these acids are converted to medium-chain fatty acids before being sent to the mitochondria to be converted into carbon dioxide and water.\n\n# Centrosome\n\nIt is a pair of cylindrical structures coordinated and composed mainly of a protein called tubulin, which are called Centriolos. The centrioles intervenes in two processes: division and cellular locomotion (movement). They are also related to the organization of the cytoskeleton. The centrosome is only found in the animal cell.\n# Reference\n\n# http://www.bioenciclopedia.com/la-celula-animal/\n# https://www.elespectador.com/noticias/actualidad/cuanto-mas-grande-el-animal-mas-pequeno-y-de-menor-cali-articulo-600164\n# http://morfologiaunefa.blogspot.com/2007/09/la-clula-como-unidad-biolgica.html\n# http://bibliotecarioamano.blogspot.com/2016/11/",
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