What structures do both plant cells and animal cells contain? A nuclei and mitochondria
B. vacuoles and chloroplasts
Cicell walls and chromosomes
D. cell membranes and cell walls

A. Nuclei and Mitochondria

This is the answer

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.