The Latin verb supponere, meaning substitute, has several legitimate heirs in English, including supposititious (which dates from the early 17th century) and supposition (a 15th century addition).
Cellular respiration takes place in the organelles called mitochondria. The mitochondria take in glucose, a type of sugar, and change it in the presence of oxygen into an energy-rich molecule called ATP, or adenosine triphosphate. For every molecule of glucose, 36 molecules of ATP are made.
Cellular respiration is the process of breaking down food molecules to obtain energy and store it in the form of adenosine triphosphate (ATP) molecules. Plant cells, after creating sugar molecules through photosynthesis, undergo cellular respiration to create ATP molecules.Animals obtain food molecules from plants and other organisms, and then undergo cellular respiration to obtain ATP molecules. Cellular respiration occurs at all times. â Photosynthesis involves conversion of one type of energy into another: light energy into chemical energy. â Cellular respiration involves using that chemical energy and breaking it down to release energy.