fcc primitive cell

Unicellular (single celled) animals.Nutrition is heterotropi..

There are two types of cell division in eukaryotes namely Mitosis , the equational division and Meiosis ,the reductional division. There is another type of cell division seen in primitive organisms, called amitosis. It is a simple type of cell division in whi..

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 cytoplasmic o..

Types of Unit Cells - There are three types of non-primitive unit cells. Taking the example of a cubic unit cell we can see that there are three types. They are: fig 2.2 - Types of unit cells..

Summary - According to the modified cell principle, new cells arise only from pre-existing cells. Cells transfer their genetic information only by way of cell division. The mode of cell division is largely the same in all living organisms ..

An element of atomic mass 98.0 g mol - 1 occurs in FCC structure. If the unit cell edge length is 500 pm and its density is 5.22 g cm - 3 . What is the value of the Avogadro's constan..

Chemical evolution resulted in the formation of life on earth about 3.8 billion years ago. The primitive cells that resulted from this process gradually gave rise to primitive forms of organisms such as bacteria, algae, fungi and protozoan. These organisms in tur..

Each O 2 - ions constitute F.C.C. or C.C.P. Na + ions occupy all the tetrahedral sites. Each O 2 - is surrounded by 8 Na + ions. Each Na + by four O 2 - ions. Na 2 O has 4:8 co-ordination. Number of Na 2 O per unit cell is 4..

The enlargement of the blastodermic vesicle is followed by the detachment of some cells from the inner cell mass. The detached cells are pushed into the blastocoel to form the embryonal endoderm or hypoblast. These cells rapidly increase in number to constitu..