Note that the organism can convert 70% (w/w) of the provided carbon source to biomass. The rest will go to CO2. The atomic mass of carbon is 12 g/mol. How many grams of carbon, therefore, would be converted into biomass and CO2

It is a mixture. simply put, a compound must be pure, that is, of only one chemical structure and composition. a mixture is made of different chemical substances (i.e. elements, molecules, compounds) that are not chemically bonded to each other, but instead physically grouped together, as in the case of gasoline (a homogeneous solution).

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A. is your answer.  hope this  

Atp, shorthand for adenosine triphosphate, is the standard molecule for cellular enger in the human body. all motion and metabolic  processes  within the body begins with energy that is released from  atp, as its phosphate bonds are broken in cells through a  process  called hydrolysis.