Proteins that speed up (catalyze) chemical reactions are called enzymes. many enzymes are required for proper metabolic reactions in the body. one problem with using cd2+ to replace zn2+ in enzymes is that cd2+ substitution can decrease or even eliminate enzymatic activity. can you suggest a different metal ion that might replace zn2+ in enzymes instead of cd2+?

Cobalt  Co

Explanation:

Co and Zn can fully replace each other, except perhaps for  small individual requirements that are met by minute metal concentrations supplied as contaminants.

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.