Anatomy of the Heart. Your heart is located under your ribcage in the center of your chest between your right and left lungs. Its muscular walls beat, or contract, pumping blood to all parts of your body. The size of your heart can vary depending on your age, size, and the condition of your heart.
In anaerobic respiration, NADH loses its electrons to other molecules in the process of fermentation for the purpose of regenerating the NAD+ needed to continue oxidizing organic molecules to produce ATP by substrate-level phosphorylation.
Through cellular respiration the cells harvest energy stored in food by a catabolic pathway for the production of adenosine triphosphate (ATP). ATP is a high energy molecule which is spent by working cells. Cellular respiration takes place both in eukaryotic and prokaryotic cells. Cellular respiration can be aerobic respiration in the presence of oxygen or anaerobic respiration in the absence of oxygen. There are two types of cellular respiration: Aerobic and Anaerobic respiration. Aerobic Respiration. Aerobic respiration takes place in the presence of oxygen, by which ATP is is produced by the cells by oxidation of organic compounds.