How mass and enery are conserved when food is digested?

Answer 1

When food is digested, the mass and energy are conserved through biochemical processes. The mass of the food is transformed into smaller molecules, such as glucose, amino acids, and fatty acids, which can be utilized by the body. Energy is released during these transformations through metabolic pathways, adhering to the law of conservation of energy, as the energy stored in the chemical bonds of food is converted into usable forms, such as ATP, for cellular activities. Overall, the total mass and energy before and after digestion remain constant, even as they change forms.