Multiple Choice
In the context of Gibbs free energy, ATP is used for ________ in all cells.
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1. Introduction to Biochemistry
Gibbs Free Energy
Multiple Choice
In the context of Gibbs free energy and cellular metabolism, which molecule is adenosine triphosphate (ATP)?
A
(adenosine diphosphate, ADP)
B
(adenosine with three phosphate groups)
C
(nicotinamide adenine dinucleotide)
D
(adenosine monophosphate, AMP)
Verified step by step guidance1
Understand that ATP stands for adenosine triphosphate, which is a molecule composed of an adenosine unit attached to three phosphate groups.
Recall that the energy stored in ATP is primarily in the high-energy bonds between the phosphate groups, especially the bonds denoted by the tilde (~) symbol representing phosphoanhydride bonds.
Identify the molecular structure of ATP as adenosine linked to three phosphate groups, often written as adenosine-P~P~P, where each '~' indicates a high-energy bond.
Compare ATP to related molecules such as ADP (adenosine diphosphate, with two phosphate groups) and AMP (adenosine monophosphate, with one phosphate group) to distinguish ATP's unique triphosphate structure.
Conclude that in the context of Gibbs free energy and cellular metabolism, ATP is the molecule with three phosphate groups attached to adenosine, making it the primary energy currency of the cell.
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