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5 Written questions

5 Matching questions

  1. saturated fatty acid
  2. transport
  3. polymer
  4. chitin
  5. fat
  1. a a 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
  2. b a fatty acid that has no double-bonded carbon atoms so that as many hydrogen atoms as possible are bonded to the carbon skeleton
  3. c a large molecule constructed by two smaller molecules, glycerol and a fatty acid, through dehydration reaction; major function is energy storage
  4. d an important structural polysaccharide used by arthropods to build their exoskeletons; pure forms of this are leathery and flexible, but they harden when encased within calcium carbonate
  5. e 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

5 Multiple choice questions

  1. a polymer of glucose monomers; synthesizing this allows for the storage of glucose, and thus, stored energy; this molecule is helical in shapeq
  2. a secondary structure in which two or more regions of the polypeptide chain lying side by side are connected by hydrogen bonds between parts of two parallel polypeptide backbones; it makes up the core of globular proteins
  3. the method used to determine 3-D structures of proteins; developed in 1959
  4. a secondary structure that is a delicate coil held together by hydrogen bonding between every fourth amino acid
  5. 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 True/False questions

  1. glycogena polymer of glucose that is like amylopectin (a complex starch that is a branched polymer with 1-6 linkages at branch points) but more extensively branched; animals store this


  2. monosaccharidesmolecules with a general formula of some multiple of the unit CH2O; these are major nutrients as carbon skeletons serve as raw material for synthesis of other organic molecules


  3. structuralthe type of protein that supports an organism; example: insects and spiders use silk fibers for cocoons and webs, collagen and elastin provide fibrous framework in animal connective tissues; keratin is protein of hair, horns, feathers, etc.


  4. primary structurethe unique structure of amino acids; example: a polypeptide composed of 127 amino acids has 20^127 different ways it can be organized


  5. secondary structurethe collection of coils and folds that result from hydrogen bonds between repeating constituents of the polypeptide backbone (not the amino acid sides)