HUMAN NUTRITION

Detailed explanation-1: -It is beneficial for the cell to break down glucose and store energy in ATP molecules because ATP provides an easily accessible and immediate source of energy for the cell, whereas glucose takes longer to break down and release energy.

Detailed explanation-2: -In general, the main energy source for cellular metabolism is glucose, which is catabolized in the three subsequent processes-glycolysis, tricarboxylic acid cycle (TCA or Krebs cycle), and finally oxidative phosphorylation-to produce ATP.

Detailed explanation-3: -During glycolysis, a glucose molecule with six carbon atoms is converted into two molecules of pyruvate, each of which contains three carbon atoms. For each molecule of glucose, two molecules of ATP are hydrolyzed to provide energy to drive the early steps, but four molecules of ATP are produced in the later steps.