the branch of biology that deals with the nature of biological phenomena at the molecular level through the study of DNA and RNA, proteins, and other macromolecules involved in genetic information and cell function, characteristically making use of advanced tools and techniques of separation, manipulation, imaging, and analysis.
the study of biological phenomena at the molecular level
molecular biology n.
The branch of biology that deals with the formation, structure, and activity of macromolecules essential to life, such as nucleic acids, and especially with their role in cell replication and the transmission of genetic information.
The branch of biology that deals with the formation, structure, and function of macromolecules essential to life, such as nucleic acids and proteins, including their roles in cell replication and the transmission of genetic information.
molecular biology [(muh-lek-yuh-luhr)]
The branch of science devoted to studies of the structure, function, and reactions of DNA, RNA, proteins, and other molecules involved in the life processes.
noun 1. the changes in the amino acid sequences of proteins that take place during evolution and speciation, and from which the dates of branchings of taxonomic groups can be deduced. noun the rate at which nucleotide (amino acid) substitutions occur in a given DNA (protein) sequence
- Molecular cloud
noun 1. a cool dense interstellar region composed of a wide variety of molecules, mainly hydrogen, plus some dust, in which stars are forming noun a large and dense cloud of cold gas and dust in interstellar space from which new stars are formed Examples It is believed that the creation of newborn stars occurs […]
- Molecular disease
molecular disease n. A disease in which there is an abnormality in or a deficiency of a particular molecule, such as hemoglobin in sickle cell anemia.
noun, Chemistry. 1. a vacuum distillation in which the molecules of the distillate reach the condenser before colliding with one another. noun 1. distillation in which a substance is heated under vacuum, the pressure being so low that no intermolecular collisions can occur before condensation