Biopolymers Lecture 4 Quiz

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Questions and Answers

What is the most common storage polymer in bacteria mentioned in the text?

  • Polyethylene
  • Polyvinyl chloride
  • Polyhydroxyalkonates (PHAs) (correct)
  • Polypropylene

What type of linkages do monomers of poly-β-hydroxybutyric acid (PHB) form to create the PHB polymer?

  • Ionic bonds
  • Ester linkages (correct)
  • Peptide bonds
  • Hydrogen bonds

Which type of plastics are biodegradable and have many properties of traditional plastics?

  • Polyhydroxyalkonates (PHAs) (correct)
  • Polyethylene
  • Polystyrene
  • Polypropylene

What is the name of the most successful PHA co-polymer used as a container for personal care products?

<p>Polyhydroxybutyrate-co-polyhydroxyvalerate (PHBV) (A)</p> Signup and view all the answers

What are the monomers that can form the PHBV co-polymer?

<p>β-hydroxy-butyrate and β-hydroxyl-valerate (C)</p> Signup and view all the answers

Which type of plastics is set to double in production in the next 20 years according to the text?

<p>Plastic production in general (C)</p> Signup and view all the answers

Which type of microorganisms are typically used in industrial microbiology to produce products or carry out chemical transformations?

<p>Bacteria (C)</p> Signup and view all the answers

What are the properties of a useful industrial microbe?

<p>Produces spores or can be easily inoculated (D)</p> Signup and view all the answers

What is a primary metabolite produced during microbial growth?

<p>Ethanol (A)</p> Signup and view all the answers

In the context of microbial biotechnology, what are secondary metabolites?

<p>Require a large number of enzymatic steps for production (A)</p> Signup and view all the answers

What is the role of a fermenter in industrial microbiology?

<p>Supplies oxygen for microbial growth (B)</p> Signup and view all the answers

What is the significance of stainless steel in large-scale fermenters?

<p>It is easy to clean and sterilize (D)</p> Signup and view all the answers

How do antibiotics typically function?

<p>By inhibiting the growth of other microbes (D)</p> Signup and view all the answers

What is the primary source of most antibiotics in clinical use?

<p>Bacteria (D)</p> Signup and view all the answers

What is the main task involved in the scale-up process in industrial microbiology?

<p>Transferring a process from small laboratory scale to large-scale commercial equipment (C)</p> Signup and view all the answers

Which group of microorganisms are discovered by laboratory screening to find new antibiotics?

<p>Actinomycetes (D)</p> Signup and view all the answers

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