cell organisation in the human body

The nervous system carries out the following functions: It perceives the changes around us through our senses It controls and coordinates all the activities of the muscles in response to the changes outside It also maintains the internal environment of the body by coordinating th..

Prokaryotic and Eukaryotic Cells - There are two basic types of cells found in living organisms - the prokaryotic cells and the eukaryotic cells. This classification is based on three main features, namely; Organisation of biomembranes Nature of cyt..

Types of Cell Division - Cell division is a method by which new cells are originated from pre-existing cells. The formation of daughter amoebae in amoeba, the development of sex cells and the growth of a young animal or plant into an adult, all invo..

All living organisms are composed of structural and functional units called cells. The body of a living organism may be composed of a single cell - as in unicellular organisms or many cells - as in multicellular organisms. The number of cells ..

These cells are a kind of lymphocytes. They do not attack micro organisms directly, but lyse the viral infected body cells and abnormal cells which could form tumou..

The simplest structural units into which a complex multicellular organism can be divided and still retain the functional characteristic of life, are called cells. One of the unifying generalisations of biology is that certain fundamental activities are common to almost all cells..

The cellular immune response is given by T - cells. There are separate T - cells for each type of antigen that invades the body. The life span of the T - cells is 4-5 years or even longer. There are four types of T - cells..

Applications of Photoelectric Cells - Photocells are used in television camera to reproduce sound recorded on films, in counting devices, in burglar and fire alarms, to measure the temperature of stars, to study the spectrum of heavy bodies, to operate street light, to compare t..

Photocells are used in television camera to reproduce sound recorded on films, in counting devices, in burglar and fire alarms, to measure the temperature of stars, to study the spectrum of heavy bodies, to operate street light, to compare the illuminating powers of two sources, in ..

The cellular immune response is given by T - cells. There are separate T - cells for each type of antigen that invades the body. The life span of the T - cells is 4-5 years or even longer. There are four types of T - cells. T - Cell differ..