The genus Dahlia is situated in the Asteroideae subfamily of the Asteraceae, in the Coreopsideae tribe. Within that tribe it is the second largest genus, after Coreopsis, and appears as a well defined clade within the Coreopsideae.
Aerobic respiration. Definition. noun. (1) A form of cellular respiration that requires oxygen in order to generate energy. (2) The process of generating energy by the full oxidation of nutrients through Krebs cycle where oxygen is the final electron acceptor.
Energy systems key terms. Term. Definition. Anaerobic. Means production of energy through processes that do not require oxygen. When applied to exercise, anaerobic refers to all exercise that does not rely on oxygen to help produce energy. Aerobic. Means production of energy through processes that require oxygen.t is important to understand that while the energy systems have unique characteristics, they do not work independently of one another. From very short intense exercise through to very light prolonged activity, all three energy systems make a contribution. However one or two will usually be most dominant.