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5 Written questions

5 Matching questions

  1. polymer
  2. amino acid
  3. electron
  4. active site
  5. element
  1. a carbon compound joined by peptide bonds; building block of proteins.
  2. b negatively charged particle that occupies space around an atom's nucleus.
  3. c specific place where a substrate binds on an enzyme.
  4. d large molecule formed from smaller repeating units or identical, or nearly identical, compounds linked by covalent bonds.
  5. e pure substance composed of only one type of atom; cannot be broken down into another substance by physical or chemical means

5 Multiple choice questions

  1. pure substance with unique properties; formed when two or more different elements combine.
  2. substance formed by a chemical reaction; located on the right side of the arrow in a chemical equation.
  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. molecule with oppositely charged regions

5 True/False questions

  1. solventsubstance in which another substance is dissolved.


  2. chemical reactionenergy-requiring process by which atoms or groups of atoms in substances are changed into different substances


  3. catalystsubstance that speeds up a chemical reaction by reducing the activation energy.


  4. protonorganic compound made of amino acids joined by peptide bonds; primary building block of organisms.


  5. solutehomogeneous mixture formed when a substance (the solute) is dissolved in another substance (the solvent).


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