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04-BS-13: December 2015

Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)

  1. Question 1 Klebsiella aerogenes Oxygen Requirement from Glycerol
  2. Question 2 Yeast Continuous Culture — Are Other Products Synthesized?
  3. Question 3 Methylophilus methylotrophus — Maximum Yield and Oxygen Demand
  4. Question 4 Nitrification — Cell Mass Produced in a Septic Tank
  5. Question 5 Cell Wall Structure and Mechanical Properties of Plant and Animal Tissue
  6. Question 6 Unsteady-State Mass Balances on a Continuous Stirred-Tank Reactor
  7. Question 7 E. coli Batch Culture — Specific Growth Rate and Biomass Yield
  8. Question 8 Mean Generation Time for a Ternary-Fission Microorganism
  9. Question 9 Measuring Oxygen Uptake Rate and $k_La$ in a Bioreactor
  10. Question 10 Bacterial Classification, Fungal Spores, and Plasmids

Start with Question 1 →

National Exams — December 2015 — 04-BS-13, Biology. Three-hour, closed-book exam (one double-sided aid sheet permitted, approved Casio/Sharp calculator allowed). Format: Part I offers 6 questions (any 3 constitute a complete answer, 20 marks each) and Part II offers 4 questions (any 2 constitute a complete answer, 20 marks each) — a full paper is 5 questions. All 10 are solved below for completeness. Q1–Q4, Q7, and Q8 are calculation questions; Q5, Q9, and Q10 are essay questions; Q6 is a derivation.

Reference texts: Shuler & Kargi, Bioprocess Engineering: Basic Concepts (2nd ed., Prentice Hall) — elemental/electron balances, yield coefficients, fermenter mass balances, growth kinetics; Madigan et al., Brock Biology of Microorganisms (15th ed., Pearson) — bacterial classification, fungal reproduction, plasmid biology; Toledo, Fundamentals of Food Process Engineering (3rd ed., Springer) — plant/animal tissue structure and mechanical properties.