CHE 444: Introduction to Polymer Engineering - Naturally Occurring Polymers
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Questions and Answers

Which compound naturally occurs in the lung, liver, and arterial walls of mammals?

  • Arabinogalactans
  • Hyaluronic Acid (correct)
  • Chondroitin Sulfate
  • Agarose

    • Where are Arabinogalactans found in mammals?

  • Gums and carrageenans
  • Starch-like chemicals
  • Bone, skin, and cartilage (correct)
  • Lung, liver, and arterial walls

    • Which structure is characteristic of globular proteins?

  • Primary Structure
  • Quaternary Structure
  • Tertiary Structure (correct)
  • Secondary Structure

    • What is the basic unit of proteins composed of amino acids?

    <p>Polypeptides</p> Signup and view all the answers

    Which compound is used as a food thickening and emulsion stabilizer?

    <p>Agar</p> Signup and view all the answers

    In proteins, which end has the N-terminus to the left and the C-O terminus to the right?

    <p>Right end</p> Signup and view all the answers

    Which of the following is a naturally occurring polymer presented in the text?

    <p>Dextrans</p> Signup and view all the answers

    In polymer engineering, what do we call small molecules that can chemically bond to form long chains?

    <p>Monomers</p> Signup and view all the answers

    Which of the following is not a naturally occurring polymer discussed in the presentation?

    <p>Polycarbonate</p> Signup and view all the answers

    What is the primary structure discussed in relation to proteins?

    <p>Secondary Structure</p> Signup and view all the answers

    Which of the following is an example of a fibrous protein mentioned in the text?

    <p>Elastin</p> Signup and view all the answers

    What process involves the dissolving and precipitation of cellulose according to the text?

    <p>Hydrolysis</p> Signup and view all the answers

    Who discovered cellulose?

    <p>Anselme Payen</p> Signup and view all the answers

    Which industry uses cellulose as a thickener and emulsifier?

    <p>Food Industry</p> Signup and view all the answers

    What is the building block for many carbohydrate polymers?

    <p>Glucose</p> Signup and view all the answers

    What is the average degree of polymerization (DP) range of cellulose?

    <p>3500-36000</p> Signup and view all the answers

    Which representation is used to show the cyclic form of glucose?

    <p>Boeseken-Haworth</p> Signup and view all the answers

    Which industry was paper invented for?

    <p>Paper and Pulp Industry</p> Signup and view all the answers

    What is the aim of genetic engineering?

    <p>To introduce desirable traits into an organism's genetic material</p> Signup and view all the answers

    What is the process of gene splicing?

    <p>Inserting genes into the genome of a different organism</p> Signup and view all the answers

    What is the main use of Recombinant DNA technology in dairy cows?

    <p>Increased milk production</p> Signup and view all the answers

    What is the purpose of DNA profiling?

    <p>Obtaining a specific DNA pattern for identification purposes</p> Signup and view all the answers

    What are RFLP enzymes used for in genetics?

    <p>To analyze genetic variation by examining DNA fragments</p> Signup and view all the answers

    What is the main use of asphalt as mentioned in the text?

    <p>Binder for rock aggregates and roof shingles</p> Signup and view all the answers

    What is the primary structure of proteins based on?

    <p>Amino acid sequence</p> Signup and view all the answers

    In which type of protein structure does hydrogen bonding occur within a single strand?

    <p>Alpha keratin</p> Signup and view all the answers

    Which type of proteins have a roughly spherical shape with a combination of alpha helices and beta sheets?

    <p>Globular proteins</p> Signup and view all the answers

    What is the function of fibrous proteins in the body?

    <p>Structural support</p> Signup and view all the answers

    What is the major function of DNA in a cell?

    <p>Stores genetic information</p> Signup and view all the answers

    What is the most stable form of Nucleic acids?

    <p>DNA</p> Signup and view all the answers

    What are Synthetic Elastomers composed of?

    <p>&quot;Synthetic Rubber&quot;</p> Signup and view all the answers

    'Natural Rubber' is composed of which form of Polyisoprene?

    <p>&quot;cis-1,4-Polyisoprene&quot;</p> Signup and view all the answers

    'Deoxyribonucleic Acid (DNA)' is more stable than RNA due to its:

    <p>&quot;Double-stranded Helix structure&quot;</p> Signup and view all the answers

    What is the major function of Fibrous Proteins?

    <p>Structural Support</p> Signup and view all the answers

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