August, 2021

• 25 August

  Genome Structure in Viruses & Prokaryotes

  

  The genomes of viruses and prokaryotes are very simple structures, although those of viruses show remarkable diversity (for a review see Dimmock et al. 2001). Most viruses have a single linear or circular genome but a few, such as reoviruses, bacteriophage φ6 and some plant viruses, have segmented RNA genomes. …

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• 25 August

  DNA Reassociation Kinetics & Sequence Complexity

  

  When double-stranded DNA in solution is heated, it denatures (‘melts’) releasing the complementary single strands. If the solution is cooled quickly the DNA remains in a single-stranded state. However, if the solution is cooled slowly reassociation/reannealing i. e. spontaneous realignment of two single DNA strands to re-form a DNA double …

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• 20 August

  Halophytes: Salient Features, Adaptations & Classification

  

  Plants which grow and complete their life cycle in habitats with a high salt content are called salt plants or halophytes. Usually that term is reserved only for plants which appear in salty habitats constantly and specifically. Plants occupying only local nonsalty ecological niches in an overall saline environment, or …

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• 19 August

  Salinity: Sources, Cycles & Classification

  

  Over four-fifths of the surface of our planet is covered with a salt solution (oceans & seas) containing, among many other constituents, approximately 0.5M NaCl. Still, only very few groups of higher plants can withstand such conditions. Most terrestrial species are unable to tolerate even one-tenth of the salt concentration …

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• 19 August

  The Eyes of Plants: ft Charles and Francis Darwin

  

  We all know Darwin as the father of evolution. But we have almost no knowledge about Darwin the botanist. Our textbooks only taught us about how Darwin gave the evolution theory and what is evolution. Even the books included in our syllabus of schools and colleges for studying botany didn’t …

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• 16 August

  Insulin Plant: Our Home Remedy for Diabetes

  

  According to WHO (World Health Organization), about 463 million people in the world are living with diabetes. A piece of alarming news had come up that, in 2019, 1.5 million people in the world had died because of this disease. Diabetes is also a very common disease amongst the people …

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• 15 August

  পৃথিবীর ভবিষ্যত: মরুভূমি নাকি অরণ্য?

  

  পৃথিবীর দক্ষিণ গোলার্ধের দিকে অবস্থিত একটি প্রাচীন হ্রদ খুঁজে পান বিজ্ঞানীরা। পূর্বে এখানে পানি থাকলেও কালের পরিক্রমায় তা এখন ভরাট। তবে তা মানুষ ভরাট করে নি, প্রাকৃতিকভাবেই হয়েছে। এ হ্রদ ভরাট হবার সময় মাটি চাপা পড়ে সেসময়কার গাছের পাতা, কীটপতঙ্গ, মাছ। আর এভাবেই সেখানে তৈরি হয় বিভিন্ন জীবের ফসিল। বিজ্ঞানীরা …

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• 12 August

  Mitochondria: The Powerplant for Eukaryotic Cells

  

  Mitochondria is a plural term. The sole form of mitochondria is the mitochondrion. The Greek word ‘Mito’ means thread and ‘Condrion’ means granule. So we can say, mitochondria are thread-like or granular structures. They are found in the eukaryotic cells. We know them as the cell powerhouse or the cell …

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• 12 August

  Biogenesis of Mitochondria: Hypotheses and the Formation

  

  All of us know that a living being always rises from another living being. Similarly, in terms of biology, biogenesis is a life-forming process. We also know that calls can have a variety of numbers of mitochondria according to their need. So mitochondrial biogenesis means the process of cells increasing …

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• 11 August

  গাছ কি আমাদের দেখতে পায়?

  

  আমরা আমাদের আশেপাশের গাছগুলোকে ভাবি দৃষ্টিশূণ্য এক জীব। যাদের কাজ কেবল সালোকসংশ্লেষণ করা। তবে আমরা অনেকেই জানি না যে, আমাদের আশেপাশের গাছগুলো আসলে আমাদের দেখতে পায়। তারা তাদের আশেপাশের পরিবেশ পর্যবেক্ষণ করতে পারে। তারা দেখতে পারে আপনি লাল শার্ট পরেছেন নাকি নীল শার্ট? আপনার বাড়ির এক জায়গা থেকে তাদের অবস্থান …

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