biology life process nutrition human nutrition

>Most artificial resources created by man draw support directly and indirectly from one or more natural resources. With this, human society is developing with man - made resources on one hand and natural resources on the other. Science and technology link them for human developm..

Amino acids are synthesised by two main processes: 1) Reductive animation In this process, ammonia reacts with a -ketoglutaric acid to form glutamic aci..

Increasing population is a serious issue, particularly in developing countries. It is necessary for every generation to produce more off springs because many individuals do not survive to reach the reproductive age due to natural causes. However, man has upset this equation as he has been successfu..

Improved yield Here the aim is to increase crop production. High yielding crops should be developed for this purpose. Better quality The public is aware and so it looks out for better quality crops. The quality would mean better size, colour, shape and taste. The health conscious public also w..

This process is much faster and requires energy. A membrane pump operates across the cell membranes which transports the nutrients from the lumen of the intestine into the cells. This transport occurs with the help of ATP molecules. The carrier proteins in the membrane act as ATPases and..

Some plants have an ability to fix nitrogen from the atmosphere through a process called symbiotic nitrogen fixation. The symbiotic bacterium Rhizobium is found in association with the root nodules of the leguminous plants such as beans, peas, gram and groundnut. The association between t..

Vitamins are nutrients which are essential to life. They are organic compounds needed in small quantities, necessary for the healthy growth and maintenance of the body. Vitamins are found in all kinds of foods but, vegetables and fruits are particularly rich in vitamins. Based on solubil..

Vast water bodies and large number of flowing waters support the life of aquatic species. Oceans occupying two-thirds of global area have naturally harboured a large wealth of aquatic plants and animals that are being exploited as aquatic resource. The diversity of life is so va..

Air is an important natural resource providing the basis of life on earth. Entire biosphere depends on air. Air in the atmosphere provides oxygen to plants and animals, by virtue of which they are able to live. The composition of air (78% N, 21% O, 0.03% CO 2 ) is necessary to be maintain..

.g., - Atomic plant explosion and miseries caused by it are wrapped up in power generation programme by atomic plants. Miseries of urbanisation are disguised in facilities offered due to urban developments. There are number of such dangerous human welfare programmes - where dangers are re..