A megahertz is one million (or 106) hertz.
See hertz, kilohertz (one thousand hertz), gigahertz[?] (109 hertz), terahertz[?] (1012 hertz), and petahertz[?] (1015 hertz).
... used to power ATP synthase. This pathway is known as cyclic photophosphorylation, and it produces neither O2 nor NADPH. Noncyclic photophosphorylation The other ...