Question

Adenosine diphosphate contains
A. One high energy bond
B. Two high energy bond
C. Three high energy bond
D. Four high energy bond

Answer 1

Hint:- In our skeletal muscle, glucose is degraded to lactic acid, which liberates energy. This metabolic
pathway involves the transformation of glucose to lactic acid is called glycolysis which contains ten
metabolic steps. Adenosine triphosphate (ATP) is a compound that contains the bond energy and
thus it is the most important form of energy currency in living systems. It breaks into adenosine
diphosphate and inorganic phosphate to liberate energy.

Complete step-by-step solution:- Living organisms can trap this energy liberated during degradation and store it in the form of chemical bonds. This bond energy is utilized by the living organism for various mechanical,biosynthetic, and osmotic work.
-It is a nucleotide that is made up of bases like adenine, ribose, and two phosphate units. It is the product of ATP dephosphorylation, releases energy via the help of ATPase; and it can also get converted to ATP by phosphorylation which adds phosphate and produces energy via ATP synthases.
-The three important structural components of ADP include a sugar backbone that remains attached to adenine with two phosphate groups bonded to the 5 carbon atoms of ribose.ADP can be converted to adenosine triphosphate (ATP) and adenosine monophosphate(AMP). The number of phosphate groups present in ATP is one more than in ADP.
-Two phosphate molecules are present in Adenosine diphosphate (ADP). Through an ester bond, which is not a high energy bond, one of the phosphorus molecules is bound to the nucleoside adenosine. An acid anhydride bond is present between the second phosphorus which is attached to the first phosphorus. Asthin bond is formed with difficulty, this is known as high energy bond. This bond forms with difficulty because it forms when a molecule of phosphoric acid reacts with another phosphoric acid molecule.Thus, ADP has only one high energy bond whereas ATP has two high-energy bonds. The ester bonds are not but only acid anhydride bonds are high energy bonds.Hence adenosine diphosphate contains only one high energy bond. So, the correct answer is option A, One high energy bond.

Note:-
In photosynthesis and glycolysis, ADP plays an important role. When adenosine triphosphateATP loses one of its phosphate groups, ADP is released. Many vital cellular processes utilise the energy released from this process. By the addition of a phosphate group to ADP, it gets converted to
ATP.