5 Written questions
5 Matching questions
- covalent bond
- a type of chemical bond formed when atoms share electrons.
- b a subunit of nucleic acid formed from a single sugar, a phosphate group, and a nitrogenous base.
- c substance that exists before a chemical reaction starts; located on the left side of the arrow in a chemical reaction.
- d atom that is negatively or positively charged because it have lost or gained one or more electrons.
- e large molecule formed by joining smaller organic molecules together
5 Multiple choice questions
- reactant to which an enzyme binds
- protein that speeds up a biological reaction by lowering the activation energy needed to start the reaction
- large molecule formed from smaller repeating units or identical, or nearly identical, compounds linked by covalent bonds.
- organic compound made of amino acids joined by peptide bonds; primary building block of organisms.
- mixture that can react with an acid or a base to maintain the pH within a specific range.
5 True/False questions
acid → hydrophobic biological molecule composed mostly or carbon and hydrogen; fats, oils, and waxes are lipids
pH → measure of the concentration of hydrogen ions (H+) in a solution.
nucleus → center of an atom; contains neutrons and protons. In eukaryotic cells, the central membrane-bound organelle that manages cellular functions and contains DNA
solvent → substance in which another substance is dissolved.
catalyst → substance that speeds up a chemical reaction by reducing the activation energy.