*Note: These notes were used as part of my biology, and are meant to provide an overview of organic chemistry and biochemistry at a 10th grade level. 1. Explain the structure of an atom. The nucleus is the center of the atom. In the nucleus are protons (+) and neutrons (no charge). Electrons (-) revolve in shells around the nucleus. 2. Differentiate between elements and compounds. Elements are substances that cannot be broken down any further. Compounds are 2 …showed first 75 words of 716 total…

…showed last 75 words of 716 total…reaction depends on concentration of enzyme and substrate, Coenzymes- organic cofactors, some vitamins. Competitive Inhibitors- substances that prevent an enzyme from functioning by mimicking substrate. Noncompetitive Inhibitor- substance that prevents an enzyme from functioning, attach at some other place and distort active site so substrate cannot attach. 12. What is an acid? A base? An acid is a compound that donates H+ ions. A base is a compound that donates OH- ions or accepts H+ ions.