5 Written Questions
5 Matching Questions
- polar molecule
- a molecule with oppositely charged regions
- b substance that releases hydrogen ions (H+) when dissolved in water; an acidic solution has a pH less than 7.
- c negatively charged particle that occupies space around an atom's nucleus.
- d pure substance composed of only one type of atom; cannot be broken down into another substance by physical or chemical means
- e protein that speeds up a biological reaction by lowering the activation energy needed to start the reaction
5 Multiple Choice Questions
- atom that is negatively or positively charged because it have lost or gained one or more electrons.
- substance dissolved in a solvent.
- carbon compound joined by peptide bonds; building block of proteins.
- hydrophobic biological molecule composed mostly or carbon and hydrogen; fats, oils, and waxes are lipids
- positively charged particle in an atom's nucleus.
5 True/False Questions
carbohydrate → reactant to which an enzyme binds
compound → substance dissolved in a solvent.
chemical reaction → negatively charged particle that occupies space around an atom's nucleus.
substrate → substance that releases hydroxide ions (OH-) when dissolved in water; a basic solution has a pH greater than 7.
active site → carbon compound joined by peptide bonds; building block of proteins.