the most important question in life

1) They produce food for all organisms 2) They provide beneficial substances like drugs, tannins, fibres, rubber, vegetable oils, fuel, condiments. 3) Some plants contain alkaloids which check growth of cancer cells. Example: Rosy periwinkle. 4) Plants release O 2 , cool environment by releasing H..

It makes the study of such a wide variety of organisms easy. It projects before us a good picture of all life forms at a glance. It helps us understand the interrelationship among different groups of organisms. It serves as a base for the development of other biological science..

Introduction - Study of chemistry is important for the simple reason that, many chemicals find applications in almost all aspects of our daily life. The flow chart given below illustrates the importance of chemistry in our daily life..

Introduction - Study of chemistry is important for the simple reason that, many chemicals find applications in almost all aspects of our daily life..

Summary - All living organisms are composed of one or more cells. A cell is the structural and functional unit of life. The metabolic reactions in a living organism - can occur only in a delicately balanced environment. Through their unique chemical composition, cells provide a specific enviro..

Some Important Carbon Compounds - Ethanol - Many carbon compounds find applications in almost all aspects of our daily life as we have seen earlier. In this chapter two very important organic compounds ethanol and ethanoic acid are discusse..

Importance of Chemicals in Food - Actually speaking, natural food substances are various forms of chemicals. For e.g., rice is a carbohydrate. Fruits contain carbohydrates and acids like citric acid. Vegetables contain proteins (amino acid blocks) and vitamins. Besides these, chemicals ar..

- The food passively sinks into the body on contact. ..

Foods [starch, sugar, fats, vitamins, proteins] Fuels [wood, coal, alcohol, petrol] Household and commercial articles [paper, soap, cosmetics, oils, paints] Textile fabrics [cotton, wool, silk, linen, rayon, nylon] Drugs and disinfectants [penicillin, quinine, aspirin, sulpha drugs] ..