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 Both plants and animals carry out cellular respiration. Cells in both plants and animals contain organelles called mitochondria that are the sites for the cellular respiration process. Cellular respiration uses glucose and oxygen and produces carbon dioxide, water, and energy stored in ATP molecules. The energy stored in ATP is used to power. and organismâs life activities such as circulation, excretion, movement, and synthesis.