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5 Written questions

5 Matching questions

  1. Elements
  2. Nucleic Acids
  3. Lipids
  4. proteins
  5. synthesis reaction
  1. a Occur when two or more atoms or molecules combine to form a larger, more complex molecule. A+B->AB
  2. b Unique substances that cannot be broken down into simpler substances by ordinary chemical methods.
  3. c the main building material of all cells.
  4. d A large group of organic compounds - contain carbon, hydrogen and oxygen with more carbon and hydrogens than oxygens.
  5. e Determine what type of or

5 Multiple choice questions

  1. functional proteins that act as biological catalysts. A catalyst is a substance that increases the rate of a chemical reaction without becoming part of the product or being changed itself.
  2. The type of exchange reaction in which an acid and a base interact.
  3. Uncharged, or neutral atomic particles.
  4. Negatively charged atomic particles.
  5. Process of spontaneous atomic decay.

5 True/False questions

  1. pHMeasures the relative concentration of hydrogen and hydroxyl ions in various solutions.


  2. CarbohydratesContain carbon, hydrogen and oxygen.


  3. CompoundWhen two or more different atoms bind together to form a molecule.


  4. Chemical reactionOccur whenever atoms combine with or dissociate from other atoms.


  5. AtomHydroxides ionize and dissociate in water releasing hydroxyl ions (OH-)


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