Question

how is respiration an exothermic process

Answer 1

During respiration, glucose molecules are converted to other molecules in a series of steps. They finally end up as carbon dioxide and water. The reaction is exothermic because the C=O and O-H bonds in the products are so much more stable than the bonds in the reactants.

Answer 2

in respiration glucose molecules are converted into other molecules in a series of steps .
they are endup with CO2 and H2O