Meaning of Molecular Biology

The biology is the science devoted to the study of the composition, development, relationships and functioning of living organisms. Molecular, on the other hand, is that linked to molecules: the minimum units of an element that maintain their chemical properties and that can be composed of different or identical atoms.

These ideas allow us to delve into the molecular biology. It is the branch of biology that is focused on the analysis of biological phenomena from the perspective of the structure of molecules.

It can be said that molecular biology studies, from the molecular point of view, the processes carried out by living organisms. Through knowledge about the properties of molecules, it is possible to explain various questions in life.

Short for MB by AbbreviationFinder, molecular biology is generally oriented towards macromolecules: those with the largest size and molecular weight. In this context, proteins and nucleic acids, two macromolecules of enormous importance in the functioning of organisms, acquire particular importance.

Experts in molecular biology study the composition, structure and functions of molecules that are fundamental in the development of vital processes. The synthesis of proteins, the links between deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) and metabolism are some of the subjects of interest of molecular biologists.

One of the branches of science related to molecular biology is biological chemistry, the area dedicated to the study of the biomolecules that make up living beings and the way in which they interact according to the chemical and physical laws of inanimate matter so that the life is maintained and prolonged. This discipline is also interested in the observation of organisms according to the molecular changes that derive from the metabolic procedures that characterize them.

In short, we can say that molecular biology differs from biological chemistry in that the latter contemplates the history of DNA molecules, which is why they observe their past in their structure (the moment in which their constitution took place). An organic molecule that is created at this moment, on the other hand, only knows its present, it has no past or history.

On the other hand, there is organic chemistry, a branch of chemistry that includes the study of a large number of molecules, many of which have in their composition carbon-hydrogen or carbon-carbon covalent bonds, between various heteroatoms, which are also known by the name of organic compounds. Since carbon is present in all the compounds of this branch, it is also common to call it carbon chemistry.

Since molecular biology studies molecules from the point of view of their biological behavior, it is in constant relationship with other sciences. For example, it shares with genetics an interest in the function and structure of genes, as well as in regulating the synthesis of certain proteins, such as enzymes.

It also approaches cytology, when it observes the structure of the subcellular corpuscles (nucleolus, nucleus, robosomes, lysosomes, mitochondria, etc.) and the functions they carry out inside the cell. It has in common with Biochemistry the study of the kinetics and composition of enzymes, with a special interest in the kinds of activations, enzymatic catalysis and allosteric inhibitions, for example.

Despite these and other relationships that molecular biology establishes with certain sciences, it differs from all of them because of the methods it uses to achieve its goals.

Molecular Biology