Catalysis is the process of influencing the chemical bonds in a way that lowers the needed to speed up a chemical reaction. a heat energyb free energyc activation energyd enzyme

Amino acids contain the elements carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur. of the 20 amino acids found in humans, 11 are called "nonessential" because they can be manufactured by the body when needed. which elements in these 11 amino acids are commonly obtained from the metabolism of sugar molecules?