Which of the following is not true for energy currency of the cella)ATP is known as energy currency of cellb)It is produced in mitochondria and cytoplasmc)It is the molecule with highest Gibbs free energy of hydrolysisd)It has three high energy bondsCorrect answer is option 'C,D'. Can you explain this answer?

Question

Answer

Introduction:
The energy currency of the cell refers to the molecule that carries and provides energy for various cellular processes. Adenosine triphosphate (ATP) is the primary energy currency of the cell.

Explanation:
Let's analyze each option to determine which one is not true for the energy currency of the cell.

a) ATP is known as the energy currency of the cell:
This statement is true. ATP is commonly referred to as the energy currency of the cell because it stores and releases energy for cellular processes.

b) It is produced in mitochondria and cytoplasm:
This statement is true. ATP is synthesized in both the mitochondria and cytoplasm of cells. In the mitochondria, ATP is primarily produced through oxidative phosphorylation, while in the cytoplasm, it is generated through glycolysis and substrate-level phosphorylation.

c) It is the molecule with the highest Gibbs free energy of hydrolysis:
This statement is not true. Although ATP is a high-energy molecule, it is not the molecule with the highest Gibbs free energy of hydrolysis. Other molecules such as phosphoenolpyruvate (PEP) and creatine phosphate have higher Gibbs free energy of hydrolysis compared to ATP.

d) It has three high-energy bonds:
This statement is not true. ATP contains two high-energy bonds, not three. These high-energy bonds are located between the phosphate groups, specifically between the gamma (third) and beta (second) phosphate groups, as well as between the beta (second) and alpha (first) phosphate groups.

Therefore, the correct answer is option 'C,D' because ATP is not the molecule with the highest Gibbs free energy of hydrolysis, and it has two high-energy bonds, not three.

Conclusion:
Understanding the characteristics of ATP as the energy currency of the cell is essential in comprehending the energy transfer and utilization processes within cells. ATP plays a crucial role in various cellular activities, including muscle contraction, active transport, and biosynthesis.

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