biology module 4

1) Non-invasive diagnostic techniques are those that can be applied without penetrating the skin. 2) X-rays have a remarkable ability to penetrate matter. They help to provide detailed images of dense parts of the body like bones. 3) The photographic image produced by x-radiation is called Radiogra..

(PEP). PEP reacts with CO 2 to form oxaloacetic acid which is reduced by NADPH to form malic acid. The malic acid then reacts with RUBP to form pyruvic acid and PGA. The pyruvic acid is then phosphorylated by ATP to regenerate PEP while PGA is converted to triose phosphate as far as C 3 plants. The..

Fibrocytes are stellate or star shaped cells, which produce the matrix and white and yellow fibres. Macrophages are irregular, amoeboid cells which can ingest bacteria and other disease producing germs by phagocytosis. Mast cells are spherical or oval cells, which produce the anticoagulant ..

Certain species of animals and also plants have individuals of different varieties, which show distinct features. For e.g., a) There are several varieties of dogs such as Eskimo, Terrier, Grey hound, Bull dog etc, which show differences in colour, size and shape (also behaviour). Though these va..

It involves growing trees needed for industries in specific area..

In this, a hormone - caused cancer is treated by another hormone which neutralises carcinogenic hormones. For e.g., breast cancer can be controlled by Testosteron..

According to this theory, ageing is the by-product of metabolism. Therefore greater is the organisms rate of metabolism, shorter is its life span and vice ver..

Methane has capacity to mix with blood haemoglobin to form methamoglobin - which has no capacity to carry O 2 like normal haemoglobin. This reduces oxygen supply to body causing asphyxia. ..