Chemistry of Life Crossword Puzzle

QUESTIONS LIST:

• atom: the basic unit of a chemical element
• element: a substance that cannot be decomposed into simpler substances by chemical means
• compound: a substance formed when two or more chemical elements are chemically bonded together.
• molecule: a tiny or very small piece of something
• cohesion: the sticking together of alike molecules
• adhesion: the force of attraction between unlike molecules
• solution: a substance in which the particles are spread out evenly
• acid: any class of compounds that form hydrogen ions when dissolved in water
• base: a substance that accepts protons from acids
• carbohydrates: molecular compounds made from just three elements, carbon, hydrogen, and oxygen
• lipids: a group of naturally occurring molecules that include fats, waxes, and steroids
• proteins: a molecule composed of polymers of amino acids joined together by peptide bonds
• nucleic acid: dna and rna
• amino acids: the building blocks of protein. only 20 of these.
• energy: the strength and vitality required for sub stained physical or mental activity
• activation energy: the minimum quantity of energy that the reacting species
• enzyme: a substance produced by a living organism that acts as a catalyst to bring about reactions
• substrate: a substance or layer that underlies something or on which some process occurs in particular
• active site: a region on an enzyme that binds to a protein or other substances during a reaction