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Showing posts with the label India space journey

Cell – The Basic Unit of Life | Functions, Organelles & MCQs

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🧬Cell – The Basic Unit of Life A cell is the smallest structural and functional unit of life . It is the building block of all living organisms, carrying out essential processes like growth, energy production, and reproduction. For competitive exams like NEET , UPSC, SSC, and State PSCs, understanding the structure and functions of the cell is important because it forms the foundation of biology. Questions are frequently asked on cell theory , organelles , plant vs. animal cells, and cell division , making this topic a high-scoring and must-prepare section . 🕵🏻‍♂️Discovery of Cell The discovery of the cell was a turning point in biology, and many scientists contributed step by step to our understanding. In 1665, Robert Hooke observed thin slices of cork under a simple microscope and saw small box-like structures. He called them “cells” because they looked like the tiny rooms (cells) in a monastery. In 1674, Anton van Leeuwenhoek developed a better microscope and was ...

India’s Space Journey: From Aryabhata to Chandrayaan-3

India’s Space Journey: From Aryabhata to Chandrayaan-3 – A Story Every Aspirant Should Know Introduction: India’s Space Dream Begins India's space journey is not just a timeline of rocket launches. It's a story of ambition, resilience, and national pride. For every UPSC, SSC, or state exam aspirant, knowing India’s space achievements isn’t just helpful—it’s essential. Questions from this topic frequently appear in prelims, mains, and interviews. Let’s take a fascinating ride through India’s journey from its very first satellite, Aryabhata , to the historic Chandrayaan-3 , and discover what makes India a rising space power. 🌟 1. The Beginning: Aryabhata (1975) India entered the space age with the launch of Aryabhata, named after the ancient Indian astronomer. Though launched by the Soviet Union, it was India’s first indigenously built satellite. Aryabhata’s purpose was to study solar and cosmic X-rays, and it laid the groundwork for future space-based scientific research....