Category Science

Human Health and Disease

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Human Health and Disease for UPSC aspirants Human health is the state of complete physical, mental, and social well-being. Health increases productivity and ensures longevity. What is Human Health? Ways to Ensure Good Health Why do Diseases Occur? Common Diseases…

DNA and RNA Explained

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Nucleus Chromosomes Nucleotide & Nucleoside Nucleic Acids DNA & RNA Comparison of DNA and RNA S.No. DNA RNA 1. Deoxyribonucleic acid Ribonucleic acid 2. It occurs inside the nucleus of cell and some cell organelles but it plants it is…

Nanotechnology: A Brief Note 2024

A brief note on Nanotechnology Introduction Why is nanoscale so significant? Nanomanufacturing There are two ways to manufacture nanomaterials: A. Top-Down Approach B. Bottom-Up Approach Generations of Nanotechnology Nanotechnology is divided mainly into four generations which also gives a road map for…

Carbon and Its Compounds 

Chapter 4: Carbon and Its Compounds  Introduction: Two or more elements combine to form a compound. There are two types of compounds: Organic Compounds and Inorganic Compounds. Organic compounds are made up of carbon and hydrogen (generally known as hydrocarbons)…

How do organisms reproduce?

Class 10 Chapter 6: How do Organisms Reproduce   Introduction Do organisms create exact copies of themselves? Different types of Reproduction Asexual Reproduction It is a mode of reproduction involving a single parent. There are different modes of asexual reproduction- Fig.1.…

Common Diseases in Humans

The disease is a condition of disturbed functioning of the body caused by infection, defective diet, heredity, environment, or deprived condition of the brain. Health is a state of complete physical, mental, and social well-being. Health is described as the state of complete physical,…

Heredity and Evolution: Genetics

Introduction In biology, any differences between cells, individual organisms, or groups of organisms of any species either by genetic difference or by the effect of environmental factors on the expression of the genetic potential, are termed as variations. Variations may…

History of Physics

expansion of universe

The history of physics is a vast and fascinating subject that spans several millennia. It encompasses the study of the fundamental laws and principles that govern the natural world, the development of scientific theories, and the remarkable discoveries made by…

Isaac Newton (1642-1727)

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Isaac Newton was born in Woolsthorpe, England in 1642, the year Galileo died. His extraordinary mathematical ability and mechanical aptitude remained hidden from others in his school life. In 1662, he went to Cambridge for undergraduate studies. A plague epidemic…