5 Written Questions
5 Matching Questions
- a combination of two or more different substances in which each substance keeps its individual characteristics; can have a uniform composition (homogeneous) or have distinct areas of substances (heterogeneous).
- b mixture that can react with an acid or a base to maintain the pH within a specific range.
- c atom that is negatively or positively charged because it have lost or gained one or more electrons.
- d substance in which another substance is dissolved.
- e particle without a charge in an atom's nucleus
5 Multiple Choice Questions
- specific place where a substrate binds on an enzyme.
- type of chemical bond formed when atoms share electrons.
- compound whose atoms are held together by covalent bonds
- protein that speeds up a biological reaction by lowering the activation energy needed to start the reaction
- reactant to which an enzyme binds
5 True/False Questions
carbohydrate → organic compound containing carbon, hydrogen, and oxygen in a ratio of on oxygen and two hydrogen atoms for each carbon atom.
element → substance in which another substance is dissolved.
amino acid → substance that releases hydrogen ions (H+) when dissolved in water; an acidic solution has a pH less than 7.
nucleus → a subunit of nucleic acid formed from a single sugar, a phosphate group, and a nitrogenous base.
base → substance that releases hydroxide ions (OH-) when dissolved in water; a basic solution has a pH greater than 7.