In this article we will discuss about the secondary structure of Deoxyribonucleic Acids (DNA) and Ribonucleic Acids (RNA). Secondary Structure of Deoxyribonucleic Acids: Some observations made on deoxyribonucleic acids in solution suggested that DNA molecules — as they could be extracted from cells — had structural characteristics different from those expected in molecules having only the primary structure we just [...]
Amino acids will be incorporated into proteins from the aminoacyl-tRNAs. To study this process we must acquire a wider knowledge of ribosomes and the messenger RNA, which will form a complex with the aminoacyl-tRNAs. Ribosomes: These are ribonucleoprotein particles consisting of about 65% RNAs and 35% proteins in the case of E.coli and which may be obtained from cellular homogenates [...]
In this article we will discuss about the physico-chemical properties of nucleic acids. The size of nucleic acids varies immensely. The smallest ribonucleic acids are the tRNAs which comprise about 80 nucleotides; their molecular weight is about 30 000. Ribosomal ribonucleic acids are larger; they contain several thousands of nucleotides and their molecular weight can exceed 1 million. The RNA [...]