TNPSC Exam MaanavaN Time Table October Month Day 1 06.Oct.2017

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TNPSC Exam MaanavaN Time Table October Month Day 1 06.Oct.2017

Science Material

The aim of biology is to explain the living world in terms of scientific principles. Aristotle, the great Greek philosopher and teacher, is known as the father of biology and the French naturalist, Jean Baptiste-de Lamarck, was the first to used the word  ‘biology’ in 1800. Biology today is subdivided into numerous branches based on the molecule, the cell, the organism and the population.

There are seven characteristics that can be observed, more or less, in all living organisms. In order to maintain themselves and  prevent disintegration, organisms have an inbuilt self-regulating system to ensure that there is no net energy loss. This control is referred to as homeostasis and operates at all levels of biological organisation, from the molecular level to the community level.

Modern society is heavily dependent on advanced materials: lightweight composites for faster vehicles, optical fibres for telecommunications and silicon microchips for the information revolution. Materials scientists study the relationships between the structure and properties of a material and how it is made. They also develop new materials and devise processes for manufacturing them. Materials Science is vital for developments in nanotechnology, quantum computing and nuclear fusion, as well as medical technologies such as bone replacement materials.

This diverse programme spans the subject from its foundations in physics and chemistry to the mechanical, electrical, magnetic and optical properties of materials, and the design, manufacture and applications of metals, alloys, ceramics, polymers, composites and biomaterials. This work is supported by excellent laboratory and teaching facilities.

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