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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 ...
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Jet Streams and Their Impact on India's Weather

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Jet Streams - Meaning, Types, Effects on Indian Weather We often hear the term "jet streams" in weather reports, but what are they really? These fast-moving winds high up in the sky have a big impact on our weather, even though we can’t see them. In India, jet streams affect everything from the arrival of monsoon rains to winter cold waves. Understanding them helps us make sense of many weather changes we see every year. Let’s take a closer look at what jet streams are and how they affect our weather. What are jet streams? "Jet streams are strong winds blowing high above Earth's surface, in the upper troposphere. They usually flow from west to east in both hemispheres. Most of the time, their speeds are around 129 to 225 kilometers per hour (80 to 140 miles per hour), but sometimes they can go as fast as 443 kilometers per hour (275 miles per hour). During winter, these jet streams become even faster, because the difference in temperature between warm and cold air b...
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