Biology crossword puzzle

What is the electrostatic attraction between two polar groups that occurs when a hydrogen atom covalently bound to a highly electronegative atom such as nitrogen or oxygen?
This molecule is usually composed of carbon atoms in rings or long chains. (two words)
A molecule containing a very large number of atoms, such as protein, nucleic acid, or synthetic polymer.
A molecule that can be bounded to other identical molecules to form a polymer.
A substance that has a molecular structure consisting chiefly or entirely of a large number of similar units bounded together.
A substance produced by a living organism that acts as a catalyst to bring about a specific biochemical reaction.
A substance or layer that underlies something, or on which some process occurs.
A chemical bound formed between two molecules when a carboxyl group of one molecule reacts with the amino group of other molecule, releasing a molecule of water. (two words)
A simple organic compound containing both a carboxyl and an amino group. (two words)
A region on an enzyme that binds to a protein or other substance during a reaction. (two words)
The minimum quantity of energy that the reacting species must process in order to undergo a specified reaction. (two words)