Wiktionary
n. 1 (context biology biochemistry English) the branch of biology that studies the macromolecules of life, such as proteins, lipoproteins and nucleic acids 2 (context genetics English) the branch of biology studies the manipulation of genetic sequence of DNA 3 (context genetics English) the technology of gene manipulation
WordNet
n. the branch of biology that studies the structure and activity of macromolecules essential to life (and especially with their genetic role)
Wikipedia
Molecular biology concerns the molecular basis of biological activity between biomolecules in the various systems of a cell, including the interactions between DNA, RNA and proteins and their biosynthesis, as well as the regulation of these interactions. Writing in Nature in 1961, William Astbury described molecular biology as:
Molecular Biology is a scientific journal which covers a wide scope of problems related to molecular, cell, and computational biology including genomics, proteomics, bioinformatics, molecular virology and immunology, molecular development biology, and molecular evolution. Molecular Biology publishes reviews, mini-reviews, experimental, and theoretical works, short communications and hypotheses. In addition, the journal publishes book reviews and meeting reports. The journal also publishes special issues devoted to most rapidly developing branches of physical-chemical biology and to the most outstanding scientists on the occasion of their anniversary birthdays. The journal is published in English and Russian versions by Nauka.
Usage examples of "molecular biology".
I can't bear hearing yet again just how molecular biology is the key to the world's future!
This doesn't happen but, if it did, it would be fair to say that modern molecular biology had vindicated the ancient theory of preformationism.
Consider the enormous diversity of living things on Earth, all of which share the same planet and an identical molecular biology.
Historical sciences in the broad sense (including astronomy and the like) share many features that set them apart from nonhistorical sciences such as physics, chemistry, and molecular biology.
Originally trained as a physician, she had become one of the leading Indian experts in molecular biology and now shared her time between King's College, Cambridge, and the Tata Institute in Bombay.
Funded in large part by an endowment from the enormously wealthy Van Buskirk family of Boston, the Rose Center had been doing molecular biology for thirty years.
Physiology and molecular biology can do no more than identify proximate mechanisms.
Evolution is a fact amply demonstrated by the fossil record and by contemporary molecular biology.