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5 Written questions

5 Matching questions

  1. carbohydrates
  2. purines
  3. ribose
  4. glycogen
  5. triacylglycerol
  1. a a fat that consists of three fatty acids linked to one glycerol molecule; linkages that bond hydroxyl to carboxyl are called ester linkages
  2. b a sugar (monosaccharide) or one of its dimers (disaccharides) or polymers (polysaccharides)
  3. c the sugar connected to RNA; has one more oxygen atom than the other sugar associated with nucleicacids
  4. d a 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
  5. e the family of larger nitrogenous bases in which its members have a six-membered ring fused to a five-membered ring; members are adenine (A) and guanine (G)

5 Multiple choice questions

  1. when two monomers connect to each other by a reaction in which two molecules are covalently bonded to each other through a loss of a molecule
  2. an alcohol with three carbons, each having a hydroxyl group
  3. 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. 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. the 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.

5 True/False questions

  1. beta pleated sheeta 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


  2. transportthe type of protein that helps a cell respond to chemical stimuli; example: receptors built into the membrane of a nerve cell detect chemical signals released by other nerve cells


  3. nucleotidea 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. 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


  5. saturated fata fat made from unsaturated fatty acids; they are liquid at room temperature (oils) because kinks in -cis bonding prevent molecules from packing together to solidify