Beta-oxidation
a process by which fatty acids are degraded, involving oxidation of the beta carbons and removal of successive two-carbon fragments from the fatty acid.
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- Beta particle
an electron or positron emitted from an atomic nucleus in a certain type of radioactive decay. historical examples a brief account of radio-activity francis preston venable noun a high-speed electron or positron emitted by a nucleus during radioactive decay or nuclear fission beta particle a high-speed electron or positron, usually emitted by an atomic nucleus […]
- Beta radiation
beta radiation beta radiation [(bay-tuh)] note: beta radiation, unlike alpha radiation, has some penetrating power and can p-ss through clothing and wooden walls.
- Beta ray
a stream of beta particles. historical examples the breath of life john burroughs noun a stream of beta particles beta ray a stream of beta particles.
- Beta rhythm
a pattern of high-frequency brain waves (beta waves) observed in normal persons upon sensory stimulation, especially with light, or when they are engaging in purposeful mental activity. noun (physiol) the normal electrical activity of the cerebral cortex, occurring at a frequency of 13 to 30 hertz and detectable with an electroencephalograph see also brain wave
- Beta sheet
a secondary structure occurring in many proteins, consisting of several polypeptide chains running in parallel or alternating directions and joined by intermolecular hydrogen bonds, creating a flexible, strong arrangement. beta sheet a structure that occurs in many proteins and consists of two or more parallel adjacent polypeptide chains arranged in such a way that hydrogen […]