Two quick multiple choice biology questions! (for a couple extra points) answer both seriously or your answer will be removed which of the following undergoes change during a chemical reaction? a) atomic masses of elements in reactants b) element identities of atoms in reactants c) total number of electrons in reactants d) chemical bonds between atoms in reactants which of the following describes the metabolic reactions involved in linking glucose monomers to form cellulose? a) anabolic and endergonic b) catabolic and endergonic c) anabolic and exergonic d) catabolic and exergonic