Multiple Choice
In the standard biochemical hydrolysis reaction, what products are formed when ATP is hydrolyzed to ADP?
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1. Introduction to Biochemistry
Gibbs Free Energy
Multiple Choice
In the context of cellular energetics and Gibbs free energy, which set of components correctly describes an ATP molecule?
A
Adenine, deoxyribose, and three phosphate groups
B
Adenine, ribose, and three phosphate groups
C
Guanine, ribose, and three phosphate groups
D
Adenine, ribose, and two phosphate groups
Verified step by step guidance1
Recall the basic structure of an ATP (adenosine triphosphate) molecule, which is a nucleotide composed of three main components: a nitrogenous base, a sugar, and phosphate groups.
Identify the nitrogenous base in ATP, which is adenine. This distinguishes ATP from other nucleotides that may contain guanine, cytosine, thymine, or uracil.
Recognize the sugar component in ATP, which is ribose, a five-carbon sugar with a hydroxyl group on the 2' carbon. This differentiates ATP from DNA nucleotides, which contain deoxyribose (lacking the 2' hydroxyl group).
Note that ATP contains three phosphate groups linked in a chain, which are critical for its role in energy transfer within the cell.
Combine these components to confirm that ATP consists of adenine (the base), ribose (the sugar), and three phosphate groups, making the correct description: adenine, ribose, and three phosphate groups.
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