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5 Written Questions

5 Matching Questions

  1. saturated fatty acid
  2. chaperonins
  3. tertiary structure
  4. nucleic acid
  5. polysaccharides
  1. a macromolecules; polymers with a few hundred to a few thousand monosaccharides joined by glycosidic linkages; serve as storage material, hydrolyzed as needed to provide sugar for cells; building material for structures that protect a cell or an organism; architecture and function are determined by sugar monomers and by positions of glycosidic linkages
  2. b protein molecules that assist in the proper folding of other proteins; they do not specify the final structure of a protein, instead they keep the new polypeptide separated from "bad influences" in the cytoplasmic environment while it folds
  3. c the overall shape of a polypeptide that results from interactions between side chains of various amino acids
  4. d a 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
  5. e a fatty acid that has no double-bonded carbon atoms so that as many hydrogen atoms as possible are bonded to the carbon skeleton

5 Multiple Choice Questions

  1. chemical agents that selectively speed up chemical reactions without being consumed by the reaction; can be seen as workhorses that keep cells running by carrying out processes of life
  2. 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
  3. repeating units that serve as building blocks of a polymer; smaller molecules; some also have functions on their own
  4. lipids characterized by a carbon skeleton consisting of four fused rings
  5. an alcohol with three carbons, each having a hydroxyl group

5 True/False Questions

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


  2. x-ray crystallographythe 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.


  3. denaturationthe 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


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


  5. deoxyribosethe sugar connected to DNA; has one less oxygen atom than the other sugar associated with nucleic acids


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