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5 Written questions

5 Matching questions

  1. quaternary structure
  2. cholesterol
  3. unsaturated fatty acid
  4. tertiary structure
  5. fat
  1. a a fatty acid that has one or more double-bonded carbon atoms formed by the removal of hydrogen atoms from the carbon skeleton; there will be a kink in the hydrocarbon chain wherever a -cis double-bond occurs (causes bending)
  2. b a large molecule constructed by two smaller molecules, glycerol and a fatty acid, through dehydration reaction; major function is energy storage
  3. c a common component of animal cell membranes, and a foundation from which other steroids are synthesized; crucial molecule in animals, but can be dangerous when in high amounts
  4. d the overall shape of a polypeptide that results from interactions between side chains of various amino acids
  5. e the overall protein structure that results from the gathering of polypeptide subunits; some proteins consist of 2 or more polypeptide chains combined into one macromolecule

5 Multiple choice questions

  1. giant molecules formed by the joining of smaller molecules, usually by a condensation reaction; polysaccharides, proteins, and nucleic acids are considered these
  2. specialized macromolecules that speed up chemical reactions in cells; considered proteins
  3. the shape of proteins that are long and fiber-like
  4. the family of smaller nitrogenous bases in which its members have six-membered rings of carbon and nitrogen atoms; members include cytosine (C), thymine (T), and uracil (U)
  5. lipids characterized by a carbon skeleton consisting of four fused rings

5 True/False questions

  1. structuralthe type of protein that stores amino acids; example: ovalbumin is the protein of egg white, used as an amino acid source for developing embryos


  2. hydrolysisthe shape of proteins that are long and fiber-like


  3. polypeptidesa long molecule consisting of many similar or identical building blocks linked by covalent bonds, much as a train consists of a train of cars; carbohydrates, nucleic acids, and proteins are examples of these


  4. amino acidsa molecule with a long carbon skeleton (usually 16 or 18 in length) and a carboxyl group at the end of the molecule (hence the acid); these are hydrophobic


  5. globularan alcohol with three carbons, each having a hydroxyl group