20 pointswhat kind of bond makes molecules?

organic molecules

Explanation:

The most common bond in organic molecules, a covalent bond involves the sharing of electrons between two atoms. The pair of shared electrons forms a new orbit that extends around the nuclei of both atoms, producing a molecule

i think the answer is b.

hope it

answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.