5 Written questions
5 Matching questions
- nucleic acid
- a homogeneous mixture formed when a substance (the solute) is dissolved in another substance (the solvent).
- b organic compound made of amino acids joined by peptide bonds; primary building block of organisms.
- c complex macromolecule that stores and communicates genetic information.
- d positively charged particle in an atom's nucleus.
- e compound whose atoms are held together by covalent bonds
5 Multiple choice questions
- a subunit of nucleic acid formed from a single sugar, a phosphate group, and a nitrogenous base.
- carbon compound joined by peptide bonds; building block of proteins.
- center of an atom; contains neutrons and protons. In eukaryotic cells, the central membrane-bound organelle that manages cellular functions and contains DNA
- electrical attraction between two oppositely charged atoms or groups of atoms.
- substance that releases hydroxide ions (OH-) when dissolved in water; a basic solution has a pH greater than 7.
5 True/False questions
acid → hydrophobic biological molecule composed mostly or carbon and hydrogen; fats, oils, and waxes are lipids
buffer → substance that releases hydroxide ions (OH-) when dissolved in water; a basic solution has a pH greater than 7.
active site → specific place where a substrate binds on an enzyme.
macromolecule → molecule with oppositely charged regions
neutron → negatively charged particle that occupies space around an atom's nucleus.