Multiple Choice
In the context of Gibbs free energy and cellular metabolism, what primary function does ATP serve in living organisms?
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1. Introduction to Biochemistry
Gibbs Free Energy
Multiple Choice
In the context of Gibbs free energy and ATP hydrolysis, which set correctly describes the three structural components of an ATP molecule?
A
Adenine, ribose, and two phosphate groups
B
Adenine, deoxyribose, and three phosphate groups
C
Guanine, ribose, and three phosphate groups
D
Adenine, ribose, and three phosphate groups
Verified step by step guidance1
Recall the general structure of an ATP (adenosine triphosphate) molecule, which consists of three main components: a nitrogenous base, a sugar, and phosphate groups.
Identify the nitrogenous base in ATP, which is adenine, a purine base commonly found in nucleotides.
Recognize the sugar component in ATP, which is ribose, a five-carbon sugar with a hydroxyl group on the 2' carbon, distinguishing it from deoxyribose found in DNA.
Note that ATP contains three phosphate groups linked in a chain, which are key to its role in energy transfer through hydrolysis.
Combine these components to describe ATP as composed of adenine (base), ribose (sugar), and three phosphate groups, confirming the correct structural description.
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