BIOMOLECULES AND ENZYMES

Detailed explanation-1: -If a cell needs to spend energy to accomplish a task, the ATP molecule splits off one of its three phosphates, becoming ADP (Adenosine di-phosphate) + phosphate. The energy holding that phosphate molecule is now released and available to do work for the cell.

Detailed explanation-2: -Usually only the outer phosphate is removed from ATP to yield energy; when this occurs ATP is converted to adenosine diphosphate (ADP), the form of the nucleotide having only two phosphates. ATP is able to power cellular processes by transferring a phosphate group to another molecule (a process called phosphorylation).

Detailed explanation-3: -Hydrolysis of ATP Removing or adding one phosphate group interconverts ATP to ADP or ADP to AMP. Breaking one phosphoanhydride bond releases 7.3 kcal/mol of energy.

Detailed explanation-4: -Energy is released when an ATP is broken down into ADP and phosphate (a is correct). ATP is the primary energy currency of the cell. This means that cellular processes that require an energy input rely on the energy released from ATP hydrolysis.

Detailed explanation-5: -Energy in living organisms is stored in the bonds of ATP molecule. When energy is required by the cell, a phosphate molecule is removed from ATP (Adenosine triphosphate) forming ADP (Adenosine diphosphate).