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5 Written questions

5 Matching questions

  1. hormonal
  2. globular
  3. enzymatic
  4. cholesterol
  5. saturated fatty acid
  1. a a fatty acid that has no double-bonded carbon atoms so that as many hydrogen atoms as possible are bonded to the carbon skeleton
  2. b 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
  3. c the shape of proteins that are roughly spherical
  4. d the type of protein that coordinates an organism's activities; example: insulin, a hormone secreted by the pancreas, helps regulate the concentration of sugar in the blood of vertebrates
  5. e the type of protein that selectively accelerates chemical reactions; example: digestive enzymes release polymers in food

5 Multiple choice questions

  1. a fat that consists of three fatty acids linked to one glycerol molecule; linkages that bond hydroxyl to carboxyl are called ester linkages
  2. the unraveling and loss of a protein's native shape due to alterations of its environment, such as pH, salt concentration, and temperature; this causes a protein to become biologically inactive
  3. the type of protein that transports other substances; example: hemoglobin, the iron-containing protein of vertebrate blood, transports oxygen from lungs to other parts of the body
  4. a fat made from saturated fatty acid; animal fats are solid at room temperature because they lack double-bonds, thus flexibility enables molecules to pack together tightly
  5. the type of protein that protects against disease; example: antibodies combat bacteria and viruses

5 True/False questions

  1. macromoleculesrepeating units that serve as building blocks of a polymer; smaller molecules; some also have functions on their own

          

  2. catalystsa process that occurs when the bonds between two monomers are broken by the addition of water molecules, with a hydrogen from the water attaching to one monomer and a hydroxyl group attaching to the adjacent monomer

          

  3. ribonucleic acida polymer (polynucleotide) consisting of many nucleotide monomers; serves as a blueprint for proteins, and through the actions of proteins, for all cellular activities; two types are DNA and RNA

          

  4. polypeptidesmacromolecules that are constructed from one or more polypeptides, each folded and coiled into a specific three-dimensional structure; all made from same 20 amino acids; most structurally sophisticated molecule known

          

  5. chaperoninsmacromolecules that are constructed from one or more polypeptides, each folded and coiled into a specific three-dimensional structure; all made from same 20 amino acids; most structurally sophisticated molecule known

          

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