molecular biology

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biology

 [bi-ol´o-je]
scientific study of living organisms. adj., adj biolog´ic, biolog´ical.
molecular biology study of molecular structures and events underlying biological processes, including relation between genes and the functional characteristics they determine.
radiation biology scientific study of the effects of ionizing radiation on living organisms.

mo·lec·u·lar bi·ol·o·gy

study of phenomena in terms of biology molecular (or chemical) interactions; traditionally, the focus of molecular biology is more specific than biochemistry in that it has an emphasis on chemical interactions involved in the replication of DNA, its "transcription" into RNA, and its "translation" into or expression in protein, that is, in the chemical reactions connecting genotype and phenotype.

molecular biology

n.
The branch of biology that deals with the structure, function, and manipulation of nucleic acids and proteins.

molecular biologist n.

molecular biology

[məlek′yələr]
Etymology: L, molecula, small mass; Gk, bios, life, logos, science
the branch of biology that deals with the physical and chemical interactions of molecules involved in life functions.

molecular biology

A major discipline that marked its birth with Watson and Crick's seminal report, 'General Implications of the Structure of Deoxyribonucleic Acid', which elucidated the double helical nature of DNA; MB seeks to understand the mechanisms controlling gene expression, in physiologic and disease states, and provide the tools necessary for treating genetic diseases. See DNA, Human Genome Project.

mo·lec·u·lar bi·ol·o·gy

(mŏ-lekyū-lăr bī-olŏ-jē)
Study of phenomena in terms of molecular interactions; it differs from biochemistry in that it emphasizes chemical interactions involved in the replication of DNA, its "transcription" into RNA, and its "translation" into or expression in protein.

molecular biology

The study of cellular phenomena, and especially genetics, at a molecular or chemical level. As knowledge has progressed the term has become more and more synonymous with ‘biology’, for, today, biology aims at nothing less than a full understanding of the functioning of living things in terms of the nature and interactions of their molecules.

molecular biology

the study of the structure and function of MOLECULES of biological importance, such as NUCLEIC ACIDS and PROTEINS.

mo·lec·u·lar bi·ol·o·gy

(mŏ-lekyū-lăr bī-olŏ-jē)
Study of phenomena in terms of molecular interactions.

molecular biology,

n the study of biology from the viewpoint of the physical and chemical interactions of molecules involved in life functions.

molecular

of, pertaining to, or composed of molecules.

molecular activity
see enzyme activity.
molecular biology
study of the biochemical and biophysical aspects of the structure and function of genes and other subcellular entities, and of such specific proteins as hemoglobins, enzymes and hormones; it provides knowledge of cellular differentiation and metabolism and of comparative evolution.
molecular layer
layers of cells in both cerebellar and cerebral cortices.
molecular mimicry
see antigenic mimicry.
molecular weight
see molecular weight.
References in periodicals archive ?
In the standard method of constructing genetic family trees, molecular biologists compare the DNA sequences of genes in several species of organisms.
The report "has really very compelling data," says Elaine Ostrander, a molecular biologist at the Fred Hutchinson Cancer Research Center in Seattle who is collaborating oil a study of the dog genome.
James Garey, a molecular biologist at Duquesne University in Pittsburgh, says he is convinced that Schweitzer has found heme.
Shigeru Kondo and Rihito Asai, molecular biologists at Kyoto University in Japan, now offer a possible explanation for the mechanism underlying this peculiar coloring system: a chemical wave of interacting pigments.
Allen Bard, a chemist at the University of Texas, Austin, points out that this technique could lead to other methods for detecting small numbers of molecules in solution, an application that could prove useful to analytical chemists and molecular biologists.
Nasdaq:VARI) today introduced the 364 multichannel fluorescence detector, a BioSolution(TM) accessory allowing molecular biologists to quadruple their productivity with use of Varian's Helix(TM) System, a fully automated tool for determining variations in the DNA sequence.
This notion fits a larger view, shared by other molecular biologists, of how modern biological processes may have emerged.
Combined use of the 364 detector with the Helix System allows molecular biologists to simultaneously detect four pooled samples in one injection, increasing sample throughput four-fold, or up to 680 samples per day versus a single-channel detector analyzing only 170 per day.
Molecular biologists had already begun to recognize differences between coding and noncoding DNA and had used these differences to find genes along unfamiliar lengths of DNA, comments Andrzej K.
The agreement provides for a multidisciplinary research and development team, combining molecular biologists, mathematicians and computer scientists from both companies, to pursue the objective of advancing the understanding of protein pathways through the analysis of the results of selected Millennium DNA chip data.
Rebek remains somewhat bothered by the fact that many molecular biologists see no point in deviating from nature.
The Company has assembled a team of toxicologists, biochemists, developmental biologists, molecular biologists, and aquaculturists.

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