There are two basic kinds of cellular metabolism. One is the krebs cycle (citric acid cycle) which all aerobic organisms use to produce energy, Anaerobic metabolism can occur in several mechanisms, but is mostly commonly called "fermentation"
Carbon dioxide doesn't form in the Calvin Cycle (I assume you're referring that because there isn't such a thing as the "Calving Cycle" in biochemistry. Carbon dioxide must be taken in by the plant via the stomata and it is… Full Answer
Energy is derived from the process of cellular respiration. Metabolism is divided into two processes, anabolism and catabolism.. Respiration is catabolistic, and supplies the energy for life functions.