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5 Written questions

5 Matching questions

  1. solution
  2. nucleic acid
  3. molecule
  4. proton
  5. protein
  1. a homogeneous mixture formed when a substance (the solute) is dissolved in another substance (the solvent).
  2. b organic compound made of amino acids joined by peptide bonds; primary building block of organisms.
  3. c complex macromolecule that stores and communicates genetic information.
  4. d positively charged particle in an atom's nucleus.
  5. e compound whose atoms are held together by covalent bonds

5 Multiple choice questions

  1. a subunit of nucleic acid formed from a single sugar, a phosphate group, and a nitrogenous base.
  2. carbon compound joined by peptide bonds; building block of proteins.
  3. center of an atom; contains neutrons and protons. In eukaryotic cells, the central membrane-bound organelle that manages cellular functions and contains DNA
  4. electrical attraction between two oppositely charged atoms or groups of atoms.
  5. substance that releases hydroxide ions (OH-) when dissolved in water; a basic solution has a pH greater than 7.

5 True/False questions

  1. acidhydrophobic biological molecule composed mostly or carbon and hydrogen; fats, oils, and waxes are lipids

          

  2. buffersubstance that releases hydroxide ions (OH-) when dissolved in water; a basic solution has a pH greater than 7.

          

  3. active sitespecific place where a substrate binds on an enzyme.

          

  4. macromoleculemolecule with oppositely charged regions

          

  5. neutronnegatively charged particle that occupies space around an atom's nucleus.