#rsisb Roll no.239 Foundation Level Every living thing on Earth—from the tiniest bacterium to the largest blue whale—is made up of **cells**. 🌍🦠 Cells are often called the **building blocks of life** because they perform all the essential functions needed for an organism to survive. Let's explore the fascinating world hidden beneath the microscope! 🔍 ## 🧫 What Is a Cell? A **cell** is the smallest unit of life that can carry out all the processes necessary for living. Every cell has a specific job, and together millions or even trillions of cells form tissues, organs, and entire organisms. ## 🏛️ Main Parts of a Cell * 🧱 **Cell Membrane** – Controls what enters and leaves the cell. * 🧪 **Cytoplasm** – A jelly-like substance where many chemical reactions occur. * 🧬 **Nucleus** – The control center that contains DNA (genetic information). * ⚡ **Mitochondria** – Produce energy for the cell, often called the "powerhouse of the cell." * 🏭 **Ribosomes** – Build proteins that help the cell grow and repair itself. * 📦 **Golgi Apparatus** – Packages and transports proteins. * 🚛 **Endoplasmic Reticulum (ER)** – Helps make and transport proteins and fats. * 💧 **Vacuoles** – Store water, nutrients, and waste. * 🌿 **Chloroplasts** (Plant Cells Only) – Capture sunlight to make food through photosynthesis. * 🧱 **Cell Wall** (Plant Cells Only) – Gives strength and protection to plant cells. ## 🌱 Plant Cells vs. Animal Cells | 🌿 Plant Cells | 🐾 Animal Cells | | ------------------------ | ---------------------------- | | Have a cell wall 🧱 | No cell wall ❌ | | Contain chloroplasts 🌞 | No chloroplasts ❌ | | Large central vacuole 💧 | Small vacuoles 💦 | | Usually rectangular 📦 | Usually round or irregular ⚪ | ## 🔄 How Cells Reproduce Cells grow and divide to create new cells. This process is called **mitosis**. genui{"biology_cellular_molecular_metabolism_learning_block":{"type_id":"MITOSIS"}} Through mitosis: * 🌱 The cell grows. * 🧬 DNA is copied. * ✂️ The cell divides. * 👯 Two identical daughter cells are formed. This process helps organisms grow, heal wounds, and replace old or damaged cells. The world of cells is tiny but incredibly powerful. Every heartbeat ❤️, every breath 🌬️, every thought 💭, and every movement 🚶 begins with the work of cells. By understanding cells, scientists can develop new medicines 💊, cure diseases 🩺, improve agriculture 🌾, and unlock the mysteries of life itself. Cells truly are the remarkable foundation of every living organism! 🌟🧬🔬

#rsisb Roll no.247 Foundation# The Blueprint of Existence: Unraveling DNA and the Origins of Life 🧬🌍✨ 🔬 **The Blueprint of Existence: Unraveling DNA and the Origins of Life** is a fascinating journey into one of science’s greatest mysteries: **How did life begin, and how does living matter carry the instructions needed to grow, function, and reproduce?** 🌱🧬 From microscopic cells to complex organisms, DNA plays a remarkable role in storing and passing on biological information. 🧬 **DNA, or deoxyribonucleic acid,** can be thought of as a biological instruction manual. It contains genetic information that helps cells build proteins, regulate their activities, and pass characteristics from one generation to the next. Its famous double-helix structure, made from complementary nucleotide bases, allows genetic information to be copied and transmitted with extraordinary precision. 🌍 But DNA also raises a deeper question: **Where did the first genetic information come from?** Scientists have been investigating the origins of life for decades. While there is no single confirmed explanation for exactly how life began, several scientific ideas explore how simple chemicals on the early Earth might have interacted, formed increasingly complex molecules, and eventually contributed to the emergence of systems capable of reproduction and evolution. 🧪🌊⚡ One important idea in origin-of-life research is the possibility that **RNA may have played an early role** because it can both store information and participate in chemical reactions. Over immense periods of time, chemical systems may have become increasingly sophisticated, eventually leading toward the molecular machinery found in modern cells. 🧫🔬 The story of DNA is also connected to **evolution**. Small changes in genetic information can occur over generations, while natural selection and other evolutionary processes influence which traits become more or less common in populations. This helps explain the incredible diversity of life on Earth—from tiny microorganisms to plants, animals, and humans. 🌳🦠🦋🐘 ✨ Exploring DNA and the origins of life reminds us that science is not simply about memorizing facts. It is about asking questions, examining evidence, testing ideas, and remaining curious about the natural world. Every discovery about cells, genes, molecules, and ancient environments gives us another piece of the enormous puzzle of existence. 🔍🌌 🚀 **The blueprint of life is more than a molecule—it is part of a remarkable scientific story about information, chemistry, evolution, and the extraordinary diversity of living systems.** The more we learn about DNA and life's origins, the more we appreciate both the complexity of life today and the fascinating scientific questions that remain unanswered. 📚 Whether you are a student, science enthusiast, researcher, or simply someone curious about the world around you, this topic offers an exciting opportunity to explore biology, genetics, chemistry, evolution, and the origins of life. 🧬🔬🌍💡 ### 🌟 Key Topics 🧬 Structure and function of DNA 🔬 Genetic information and inheritance 🧪 Chemistry and the origins of life 🌊 Early Earth environments 🧫 RNA and early molecular systems 🌱 Evolution and natural selection 🌍 The diversity of life 🚀 Unanswered questions in modern biology ### 🔖 Hashtags #BlueprintOfExistence #DNA #Genetics #OriginsOfLife #Science #Biology #MolecularBiology #Evolution #GeneticCode #LifeOnEarth #EarlyEarth #RNA #CellBiology #ScientificDiscovery #STEM #ScienceEducation #Biotechnology #Nature #Learning #Curiosity 🧬🔬🌍✨

Pakistan is the land of Barbarians and terrorists according to the POTUS Here are some questions and answers. Q : How many countries are fighting actively in the NATO alliance in Afghanistan? A: Sixteen countries including USA. Q: What sort of technology are they using ? A: Latest state of the art military equipment. Q: For how many years have they been fighting the war ? A: More then Sixteen Years. Q: What are the results so far of this war? A: Failure. More then 40 %of Afghanistan controlled by their opponents and their influence is increasing. Opponents striking inside the capital Kabul with impunity in the most closely guarded areas. Q: How many casualties of US troops and civilians since 16 years ? A: About 2000. Q: How many casualties of Pak Army fighting directly in the war against terror ? A: Ten Thousand, more then all the wars combined against India. Q: How many casualties of Pakistan paramilitary and police ? A: Around Fifteen Thousand. Q: How many civilian casualties in Pakistan directly related to co operating in this war on terror ? A: Around 100, 000 . Q: Loss to Pakistan economy and Infrastructure for co operating in the war against terror A: One Hundred Billion Dollar plus FALSE CONCLUSIONS : 1. Pakistan is responsible for the poor performance and defeat of NATO Alliance in Afghanistan. 2. Pakistan should do more so that NATO Alliance is successful in the future Copied from Nadeem Sheikh.

Victoria's Secret declared bankruptcy. Zara closed 1,200 stores. Chanel, Hermes and Rolex have stopped production. Nike is getting ready for stage two of layoffs. AirBnb founder says that due to the pandemic, 12 years of effort were destroyed in 6 weeks. Starbucks announced the permanent closure of 400 stores. Virgin Australia put off 3000 poeple today. And the list continues... Five months since the pandemic started and it has created huge debts, many of our friends and family are out of work and unemployed with tens of thousands of businesses now out of service. Don’t even get me started on the energy industry. It’s a mess. If the company you work for continues to pay you, then treat it well and have respect for what the leaders and owner(s) must be going through to keep it going. Use this time to unlearn, and learn new things, forget what you already know, as it already maybe obsolete, go on YouTube and start learning ! 2020 is about survival. Leave the daily complaints/moans and anything else minor behind, be thankful, and show respect for what you have. Families are losing loved ones — to illness and other suffering. Work hard and show your boss/owner/company the appreciation they need and deserve. And, support any small business you know please! Let’s build stronger and better and more grateful! *copied from elsewhere. Let’s spread it and support small businesses suffering*

*copied* Chinese economist slaps Pak Wig over a joint session yesterday at Isb... Stop blaming America and instead blame the Japanese and yourself “You have to stop blaming the west for your economic woes , the Japanese have damaged your economy more than anyone else “. The Pakistani official from the finance ministry was taken aback at these words from the outspoken member of the visiting Chinese think tank . The Chinese economist clarified his stance . “ Look , one single Japanese import has damaged Pakistan both economically and socially and that one sweet poison is the Japanese auto import “ he went on to say —- Ask yourself what good has it done for you ? Even after 3 decades of the Suzuki ,Toyota and Honda assembly plants you can’t produce a complete car without most Japanese components. And all Japanese imports are for your consumption not for selling outside of Pakistan. Your import is paid through foreign exchange which is very short and then you borrow from the IMF and other institutions to pay for it . You run these vehicles on imported energy which again is paid in dollars which you don’t have and you again borrow or beg from international institutions or friendly countries . More imports means more and more imported energy needs . How can you justify this waste ,it is a very horrible way to manage Finance . How long will you beg beg and beg just to enjoy expensive cars and big vehicles Then he touches his middle finger on his right temple and says “ change your mind set” Understand Thrift and safe for the future . Make it extremely hard for people to buy cars and make it easy to invest in productive sectors .manufacturing ,software services , water management, modernize agriculture . Create jobs for your exporters not importers Then he points his finger towards the Pakistani official and displeasedly says . Take examples from other countries . But don’t even try to imitate the Chinese model, your society is too broken and will fail to commit a Chinese model , it requires immense sacrifices and immense discipline . I would suggest you to take an example of Morocco , it has the same limited resources as Pakistan. They modernized their agriculture and industry by reducing waste . You know in two decades of automotive assemblies , they have become the biggest exporter of autos from Africa , even aerospace companies are heading towards Morocco . Their agricultural exports are found all over Europe Shut down Toyota and Honda plants if you cannot export from them and completely stop importing expensive vehicles show the true picture of the financial disaster of these imports to your Prime minister This verbal drubbing by the Chinese economist left the Pakistani big wig red faced as he exited the meeting in haste and wondered what kind of summary he should prepare on this meeting for Big wig , Mr Shoukat and avid lover of luxury vehicles himself.

FIA took action and froze thousands of bank alfalah accounts. If any of you had watched USA senate hearing of crypto bosses, you would be aware that despite them being sceptical and worried about crypto but USA legislators were hesitant to call for an outright ban for crypto or to come heavy-handed against crypto at this stage. They wanted this technology to flourish and regulate accordingly. Here we ban without warnings, prior notices and use the term "cannot buy and sell digital assets" which is a very vast and vague term used to discourage crypto trading. As I said some days earlier, we start by banning. We had banned youtube when it was in the monetization period. The result is we have "haqeeqat tv" type content and missed out on the race of learning and adding quality youtube content. It required evolution; we were left behind in this race. Now FIA cracking down on crypto transactions. What was happening, Rs. was moving within Pakistan, within the banks. Now, what will happen? Those who want to buy crypto will try to send money outside Pakistan so that they can get USDTs. This is how the state discourages its citizens and forces them to use illegal methods. The price of USDT vs PKR will sore up. Trust in the banking system will go down for the crypto holders Unnecessary mass litigation: customers vs banks vs FIA Most importantly, we will be left behind in the race. The water will be so muddy to have any immediate gain and once the dust settles, it will be too late for us. #copied

آپ اپنا نصیب بدلنا چاہتے ہیں ؟ تو اپنی سوچ بدل لیجیۓ سوچ بدلنا چاہتے ہیں؟ تو صحبت بدل لیجیۓ آپ کی صحبت آپ کی سوچ بدل دے گی اور آپ کی سوچ آپ کا نصیب بدل دے گی۔ Copied via Huma Shakeel Malik

بیرون ملک مقیم پاکستانیوں سے گزارش ہے کہ انویسٹمنٹ کرنی ہے تو زراعت پر کرو ، باغات پر کرو زمینیں خرید کر باغات لگاؤ ، اناج اگاؤ اللّٰہ تعالٰی بھی خوش ہونگے اور مخلوق خدا کا بھی بھلا ہوگا کیونکہ زراعت اس ملک کے لیے ریڑھ کی ہڈی کی حیثیت رکھتی ہے خدارا ہاؤسنگ سوسائٹیوں میں پلاٹ لیکر پراپرٹی ڈیلروں کی جیبیں مت بھرو ، اس پراپرٹی مافیا کا بائیکاٹ کرو جو پاکستان کی سونا اگلتی زمینوں پر کنکریٹ کے جنگل بنا کر انہیں اجاڑ رہی ہے To buy and manage professionally contact Tariq Tanveer and Sajid Sandhu Agriculturist or my brother Irfan Ahmed Allahwala #copied

‏دنیا کا سب سے بڑا بیوقوف وہ شخص ہے جو سیاستدانوں کی خاطر اپنے پیاروں سے بد کلامی یا قطع تعلق کرئے سیاست دانوں کو اتنی ہی اہمیت دیں جتنی اہمیت آپکو سیاستدان دیتے ہیں باوقار اور عزت دار شہری بنیں غلام اور خوشامدی نہ بنیں! Copied with thanks from Mian Masood Jamal Susal

You start dying slowly if you do not travel, if you do not read, If you do not listen to the sounds of life, If you do not appreciate yourself. You start dying slowly When you kill your self-esteem, When you do not let others help you. You start dying slowly If you become a slave of your habits, Walking everyday on the same paths… If you do not change your routine, If you do not wear different colours Or you do not speak to those you don’t know. You start dying slowly If you avoid to feel passion And their turbulent emotions; Those which make your eyes glisten And your heart beat fast. You start dying slowly If you do not risk what is safe for the uncertain If you do not go after a dream If you do not allow yourself At least once in your lifetime To run away from sensible advice Don't let yourself die slowly Do not forget to be happy! ~ Pablo Neruda Chilean poet who was awarded the Nobe Prize for Literature in 1971 PS: Copied from some random photo on Facebook.