Question

the clavin cycle and the kerb cycle are referred to as cycles of a chemical reaction because

Answer 1

Calvin cycle it is discovered by Melvin Calvin so it is called as it
kreb cycle is discovered by William kreb so it is called as it!!
these cycles all mean how glucose is converted into many other forms of it!!
which include production of ATP cellular energy and NADPH and co2 and H2o are produced through various intermediates which are chemicals so it is called as chemical cycles.