The processed RNA molecules take part in protein synthesis with the help of ribosomes. All the three types of RNAs are involved in protein synthesis in the following main steps: (i) Activation of amino acids, (ii) Transfer of amino acid to tRNA, (iii) Initiation of protein synthesis, (iv) Elongation of the polypeptide chain. During the process of translation the genetic [...]
In this article we will discuss about the role of biology in the life of man. The progress of human civilisation has, to a great extent, been moulded along the lines of development of the biological science. Man is a social creature. People live in towns and cities. This has created several health problems such as supply of pure water, [...]
In this article we will discuss about the role of mineral elements in plants. The mineral elements, when present as ions or as constituents or organic molecules, perform several important functions in plants in a number of different ways (Table 9-3). They are important constituents of protoplasm and cell wall e.g., sulphur occurs in proteins, phosphorus in nucleoproteins and adenosine [...]