Which components make up the structure of ATP? Remember, ATP stands for Adenosine Triphosphate. The adenosine portion is made up of two things. It's made up of our nitrogenous base in the form of Adenine and the ribose sugar. And if we look, only A and B or A and C have those options.

So B is out, and D is out. So together, those two components make up the adenosine part of ATP. And why is it called triphosphate? Well, triphosphate. There are three phosphate groups connected together.

So here, it would not be one phosphate group; that would be adenosine monophosphate. So by elimination, C would have to be our answer. We're going to say here that ATP, its components are adenine, which is a nitrogenous base again, the ribose sugar, which is our sugar component, together they're the adenosine portion, adenosine, and then we have our three phosphate groups. So, C would be our final answer.