In this article we will discuss about the patterns of carbon and energy metabolism in organisms. Carbon and energy metabolism are intimately associated in all living organisms. On the basis of the ability of organisms to obtain carbon and energy from usable sources, they can be divided into several categories. Considering the energy source first, organisms can be divided into [...]
In this article we will discuss about the molecular structure of nucleic acid with the help of diagrams. Nucleic acids constitute another important group of biological macromolecules present in all types of organisms where they function mainly as store-house of genetic information and as information- transfer molecules. Two types of nucleic acids: i. Ribonucleic acid (RNA) and ii. Deoxyribonucleic acid [...]
In this article we will discuss about oxidation-reduction reactions in living organisms. In biological systems energy is generally released from oxidation-reduction reactions of organic compounds catalysed by enzymes. It is, therefore, necessary to understand clearly the nature of oxidation-reduction reactions occurring in living systems. The most common organic compound used as substrate for energy production is glucose. When one mole [...]