Exergonic reactions release energy. Endergonic reactions require an input of energy. ATP and electrons function as energy carriers in living organisms. Enzymes are required to catalyze reactions in living organisms. Specific enzyme shape is essential for proper functioning.
Metabolism is regulated in cells by control of enzyme activity.
Information to Know 1. Laws of thermodynamics, entropy 3. Endergonic, exergonic chemical reactions, coupled reactions 4. Enzymes, activation energy, feedback inhibition 5.