Author: Gk Scientist

Evolution of Varna System

Evolution of Varna System: The literal meaning of varna was colour. From the Rigveda, we come to know that the earlier basis of division in society was colour. As we know the Aryan migrants were white-skinned people and they were conscious about their colour so they were maintaining a distinct identity against the black-skinned people.

Essay on My Visit to a Historical Place

My Visit to a Historical Place: A visit to a historical place is a thrilling experience. One learns many new things. One enhances one’s knowledge. It is almost a unique experience. One meets many new people, one’s horizon of learning increases. What a pleasure! What a joy! I had a long-standing desire of visiting the

Essay on Science and Religion

Science and Religion: Till recently it was believed that Science and religion are completely opposed to each other in their objectives and their methods. The former is based on reason and the latter on faith. It was taken for granted that reason is always right and that faith is opposed to reason. Thus while scholars,

Short Essay on Sportsmanship

Sportsmanship: Sportsmanship means team spirit. Team spirit means working in co-operation for the achievement of a common goal. Team spirit teaches the qualities of co-operation, discipline, punctuality, obedience and so on. Achieving a goal through co-operative and disciplined efforts means sportsmanship. Achieving a goal is not the monopoly of a particular sportsman. One is to

Disorders Caused by Addiction to Narcotic Drugs

Disorders Caused by Addiction to Narcotic Drugs: The harmful drugs which cause an insensible condition in a man are called narcotic drugs or psychotropic drugs. The most frequently used narcotic drugs are- Morphine, Heroin, Opium, Cocaine, Marijuana, Ganja, Hashish, LSD (Ly-Sergic Acid Diethylamide), Barbiturates etc. Narcotic drugs psychotropic drugs are highly addictive. They are much

Acquired Immuno Deficiency Syndrome (AIDS)

Acquired Immuno Deficiency Syndrome: AIDS stands for Acquired Immuno Deficiency Syndrome which is characterized by a reduction in the number of helper T-lymphocytes because of infection of HIV (human immunodeficiency virus). Since the AIDS virus reduces the natural immunity of the human body, therefore, the body having AIDS becomes prone to many other infections or

Protoplast Fusion and its Uses

What is Protoplast Fusion? Protoplast Fusion is defined as the process of bringing about a fusion between protoplasts of two unrelated species of plants or animals. It is also known as somatic hybridization or parasexual hybridization because in this only somatic cells participate and it does not involve sexual fusion. In this technique, the naked

Reformation and Counter-Reformation Movements

Reformation and Counter-Reformation Movements: The Renaissance brought about a change in the thinking and the outlook of the people. Thinkers of this age did not agree with the Church. The conduct of the priests was not approved by them and they challenged the authority of the church. They refused to blindly believe what was written

Write a short note on Metabolism?

Metabolism: The release of energy from food occurs in two stages. In the first stage, when complex molecules are broken down or decomposed into simpler ones. In the second stage, when the simpler food components (example- glucose) are oxidized in cytoplasm and mitochondria using oxygen of the air into CO2 and H2O and releasing an

Advancement in the Source of Energy

Advancement in the Source of Energy: Work is done whenever the application of force produced a change. It may consist of moving a load through some distance or squeezing or cutting of the objects. Energy is needed to do work. Energy is also needed when we heat objects. For example, cooking of food or smelting