Fractionation of carbon isotopes in oxygenic photosynthesis the C3 pathway in the daytime and the C4 pathway in the nighttime. At night, when temperature and water loss are lower, the CO diffuses through the stomata and produce malate via phosphenolpyruvate carboxylase. During the following day, stomata are closed, malate is decarboxylated, and CO is fixed by RuBisCO. This process alone is similar to that of C4 plants and yields characteristic C4 fractionation values of approximately -11‰. However, in the afternoon, CAM plants may open their stomata and perform C3 photosynthesis. In daytime alone, CAM plants have approximately -28‰ fractionation, characteristic of C3 plants. These combined effects provide
What Do I Do with Me What Do I Do with Me What Do I Do with Me is a 1991 album by American country music singer Tanya Tucker. It was her highest-placing on the Billboard charts reaching #6 in the Country albums and #48 on the Pop albums categories. The album produced four Top Ten hits on the Hot Country Songs charts: "(Without You) What Do I Do with Me" and "Down to My Last Teardrop" both at number two, "Some Kind of Trouble" at number three, and "If Your Heart Ain't Busy Tonight" at number four. The track "Everything That You Want" was later