Which statement is true?
a) hydrolysis of atp to adp and phosphate releases about 14 kj/mol of free energy.
b) ctp hydrolysis can be a source of chemical energy.
c) datp is the most common source of chemical energy in cells.
d) hydrolysis of the α, β and β, γ phosphoester bonds of a nucleotide is used as a source of chemical energy.

b: CTP hydrolysis can be a source of chemical energy

Explanation:

Purine and pyrimidine nucleotides are important sources of energy that drives reactions in biological systems. These nucleotides include;

Hydrolysis of ATP to ADP yields about 57 kJ/mol of energy, dATP acts as a substrate for DNA polymerase during replication and can also act as energy transferring molecules but definitely not the most common source of chemical energy in the cell. Hydrolysis of phosphodiester bonds of a nucleotide is significant in DNA repairs and not used as a source of chemical energy.

Hence, the correct option is b.

for example, no new evidence will demonstrate that the earth does not orbit around the sun (heliocentric theory), or that living things are not made of cells (cell theory), that matter is not composed of atoms, or that the surface of the earth is not divided into solid plates that have moved over geological timescales .