Biology Crossword Puzzle

The smallest unit of matter that cannot be broken down by chemical means.
A pure substance made of only one kind of atom.
A substance made of the joined atoms of two or more different elements.
A group of atoms held together by covalent bonds.
An atom or molecule that has gained or lost one of more electrons.
An attraction between substances of the same kind.
An attraction between different substances.
A mixture in which one or more substances are evenly distributed in another substance.
Compounds that form hydrogen ions when dissolved in water.
Compounds that reduce the concentration of hydrogen ions in a solution.
Organic compounds made of carbonm hydrogen, and oxygen atoms.
Single sugar building blocks of carbohydrates.
Nonpolar molecules that are no soluble or mostly insoluble in water.
Usually a large molecule formed by linked smaller molecules called amino acids.
The building blocks of proteins.
A long chain of smaller molecules called nucleotides.
Organic molecules that serve as the monomers of nucleic acids.
A molecule that carries the genetic instructions used in the growth, development, functioning and reproduction of all known living organisms and many viruses.
A polymeric molecule essential in various biological roles in coding, decoding, regulation, and expression of genes.
A single nucleotide with two extra energy-storing phosphate groups.
The ability to move or change matter.
The energy needed to start a chemical reaction.
Substances that increase the speed of chemical reactions.
A substance on which an enzyme acts during a chemical reaction.
Pockets formed from a large protein with one or more deep folds on its surface.