The citric acid cycle, (also known as either the Kreb’s or TCA cycle) is a biological pathway involved in cellular respiration. A series of chemical reactions form energy
Oxygen comprises a large proportion of our atmosphere (21%) and has become a vital gas for many organisms on Earth. Without it our ability to produce energy (as
Introduction The key point of regulating food intake is to maintain a constant body weight. Food intake (energy input) must therefore balance against factors resulting in a loss