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5 Written questions

5 Matching questions

  1. polypeptide
  2. phospholipid
  3. molecule
  4. ionic bond
  5. enzyme
  1. a holds together ionic compounds by an attraction between negatively and positively charged ions
  2. b a single chain of amino acids
  3. c contain a phosphate group. costructed like fats except that in place of the third fatty acid, there is a polar phosphate group or a grouping that contains both phosphate and nitrogen
  4. d is formed when 2 or more atoms bond together
  5. e necessary contributors to the chemical workings of a cell, they speed up chemical reactions

5 Multiple choice questions

  1. a hydrocarbon chain that ends with the acids group COOH
  2. a base of DNA must be paired with thymine
  3. a 6 carbon sugar
  4. is used to indicate the acidity or basicity of solutions
  5. all matter, both living and nonliving is composed of certain basic substances

5 True/False questions

  1. elementsubstance that cannot be broken down to simpler substances with different properties by ordinary chemical means


  2. emulsificationa substance that causes fats to mix with water.


  3. thymine (T)a base type in RNA paired with adenine


  4. solutedissolved substances in a solution


  5. adeninea type of base. Has to be paired with Guanine


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