5 Written questions
5 Matching questions
- a substance that releases hydroxide ions (OH-) when dissolved in water; a basic solution has a pH greater than 7.
- b large molecule formed from smaller repeating units or identical, or nearly identical, compounds linked by covalent bonds.
- c center of an atom; contains neutrons and protons. In eukaryotic cells, the central membrane-bound organelle that manages cellular functions and contains DNA
- d compound whose atoms are held together by covalent bonds
- e 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).
5 Multiple choice questions
- positively charged particle in an atom's nucleus.
- specific place where a substrate binds on an enzyme.
- type of chemical bond formed when atoms share electrons.
- hydrophobic biological molecule composed mostly or carbon and hydrogen; fats, oils, and waxes are lipids
- molecule with oppositely charged regions
5 True/False questions
compound → hydrophobic biological molecule composed mostly or carbon and hydrogen; fats, oils, and waxes are lipids
enzyme → protein that speeds up a biological reaction by lowering the activation energy needed to start the reaction
ion → building block of matter; contains subatomic particles—neutrons, protons, and electrons
catalyst → substance that speeds up a chemical reaction by reducing the activation energy.
solvent → substance in which another substance is dissolved.