<P> Glucose is a simple sugar with the molecular formula C H O. Glucose circulates in the blood of animals as blood sugar . It is made during photosynthesis from water and carbon dioxide , using energy from sunlight . It is the most important source of energy for cellular respiration . Glucose is stored as a polymer , in plants as starch and in animals as glycogen . </P>
<P> Glucose is a simple sugar with the molecular formula C H O. Glucose circulates in the blood of animals as blood sugar . It is made during photosynthesis from water and carbon dioxide , using energy from sunlight . It is the most important source of energy for cellular respiration . Glucose is stored as a polymer , in plants as starch and in animals as glycogen . </P>
where do the 6 carbon atoms in glucose come from
where do the 6 carbon atoms in glucose come from
carbon dioxide
carbon dioxide