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 from pyruvate, in the form of ATP. More importantly, the citric acid cycle produces a large number of electron transporters, which proceed to [...]
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 ATP) via aerobic respiration fails.
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 of body weight, energy output. Such factors as basal metabolic rate or physical activity (exercise). Because of the simple relationship between energy input and [...]
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