Every cell carries out thousands of endergonic reactions to

Every cell carries out thousands of endergonic reactions to survive. What are the different mechanisms cells use to make endergonic reactions happen, and what keeps the exergonic reactions from racing out of control, disrupting cell metabolism and possibly destroying the cell?

Solution

Answer:

Exergonic reactions release of excess energy while Endergonic reactions require input of energy

A cell carries out thousands of endergonic reactions by coupling with exergonic reactions.

Energy released by exergonic reactions are used to drive endergonic reactions. This way cell tightly controls the exergonic reactions under check.

Example: Breakdown of ATP is exergonic (releases energy) and often coupled to cell reactions that require energy input (such as protein synthesis).