sastra definition, sastra meaning | English dictionary English-French English Synonyms English for learners Grammar Search also in: Web News Encyclopedia Images
Calvin cycle. The Calvin cycle (also known as Calvin-Benson cycle) is a series of biochemical reactions taking place in the chloroplasts of photosynthetic organisms. It was discovered by Melvin Calvin and Andy Benson at the University of California, Berkeley. It is one of the light-independent reactions and occurs in the stroma.
carbon-nitrogen-oxygen cycle noun A cyclic chain of thermonuclear fusion reactions in which carbon, nitrogen, and oxygen atoms undergo successive reactions with hydrogen nuclei or decay by emitting positrons and neutrinos or gamma rays, with each completion of the cycle converting four hydrogen nuclei into one helium nucleus and leaving the number of carbon, nitrogen, and oxygen atoms unchanged.