Thioesters are similar to oxygen esters of carboxylic acids except that
A)the energy associated with their hydrolysis is much less than that of the phosphoanhydride in ATP.
B)they are more stable at neutral pH values in cells.
C)they are less stable because S is present instead of O in the linkage.
D)they are used in glycolysis and the citric acid cycle.
E)they are not hydrolyzed enzymatically.

Question

Quizplus · Accepted Answer

Thioesters are less stable than oxygen esters because the S atom in the linkage is more easily cleaved than the O atom in oxygen esters. Thioesters are commonly used in metabolic pathways such as glycolysis and the citric acid cycle because their hydrolysis reactions release large amounts of energy, which can be used to drive other biochemical reactions. However, the energy associated with their hydrolysis is still much less than that of the phosphoanhydride bonds in ATP. Thioesters are also hydrolyzed enzymatically, just like oxygen esters.

Thioesters Are Similar to Oxygen Esters of Carboxylic Acids Except