Fractionation of carbon isotopes in oxygenic photosynthesis Calvin cycle during the day, when stomata are closed to prevent water loss, and the light reactions can drive the necessary ATP and NADPH production. This pathway differs from C4 photosynthesis because CAM plants separate carbon by storing fixed CO in vesicles at night, then transporting it for use during the day. Thus, CAM plants temporally concentrate CO to improve Rubsico efficiency, whereas C4 plants spatially concentrate CO in bundle sheath cells. The distribution of plants which use CAM photosynthesis includes epiphytes (e.g., orchids, bromeliads) and xerophytes (e.g., succulents, cacti). In Crassulacean acid metabolism, isotopic fractionation combines the effects of
Do What You Gotta Do & Tracks for the chart week of January 15, 2000. Do What You Gotta Do "Do What You Gotta Do" is a song written by guitarist Pat Flynn and recorded by the New Grass Revival for their 1989 Capitol album "Friday Night in America". The song was also recorded by American country music artist Garth Brooks. It was released in January 2000 as fifth and final single from the 1997 album, "Sevens". The song reached number 13 on the U.S. "Billboard" Hot Country Singles & Tracks (now Hot Country Songs) charts and peaked at number 18 on the Canadian "RPM"