To answer the question of which chemical equation shows the relationship between ADP and ATP, let's break down the options:
A. [tex]\( \text{ATP} \rightarrow \text{ADP} + \text{NADPH} \)[/tex]
- Here, ATP is being converted to ADP and NADPH. NADPH is a coenzyme, usually involved in biosynthetic reactions, but it’s not typically a direct product of ATP hydrolysis.
B. [tex]\( \text{ATP} \rightarrow \text{ADP} + H^+ \)[/tex]
- This equation shows ATP breaking down into ADP and a proton [tex]\(H^+\)[/tex]. ATP hydrolysis usually involves the removal of a phosphate group (Pi) rather than just a proton.
C. [tex]\( \text{ATP} \rightarrow \text{ADP} + P \)[/tex]
- This equation indicates that ATP breaks down into ADP and an inorganic phosphate [tex]\(P_i\)[/tex]. This is the most common reaction in cellular processes, where ATP (adenosine triphosphate) is hydrolyzed to ADP (adenosine diphosphate) and inorganic phosphate, releasing energy used by the cell.
D. [tex]\( \text{ATP} \rightarrow \text{ADP} + \text{NADP}^+ \)[/tex]
- This option suggests that ATP is converted to ADP and NADP[tex]\(^+\)[/tex]. NADP[tex]\(^+\)[/tex] is another coenzyme but not directly related to the hydrolysis of ATP.
Given these explanations, the correct chemical equation that shows the relationship between ADP and ATP is:
C. [tex]\( \text{ATP} \rightarrow \text{ADP} + P \)[/tex]
This equation correctly reflects the process where ATP is hydrolyzed to ADP and an inorganic phosphate, which is a fundamental reaction in biological energy transfer.
