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B.1 Microbiology: Organisms in Industry

Experiments

Here are experiments our science specialists have selected to support the IB* topic.

Inquiry

Introduction to Molecular Evolution

Experiment #21 from Investigating Biology through Inquiry

In this Preliminary Activity, you will (1) extract proteins from muscle tissue, (2) conduct electrophoresis of the resulting protein extracts, (3) analyze the results using Logger Pro, and (4) construct a cladogram using the results.

After completing the Preliminary Activity, you will first use reference sources to find out more about protein gel electrophoresis before you choose and investigate a researchable question. Some topics to consider in your reference search are:

  • protein
  • amino acid
  • gel electrophoresis
  • fish
  • evolutionary tree
  • cladogram
  • phylogenetic relationships
  • SDS-PAGE
  • denature
  • molecular weight
  • dalton
  • kilodalton (kD)

Inquiry

Evolution of Yeast

Experiment #22 from Investigating Biology through Inquiry

In this Preliminary Activity, you will use a CO2 Gas Sensor to determine the rate of respiration of glucose by baker’s yeast.

After completing the Preliminary Activity, you will first use reference sources to find out more about yeast strains that are used in baking and brewing before you choose and investigate a researchable question dealing with the evolution of yeast through artificial selection. Some topics to consider in your reference search are:

  • Saccharomyces cerevisiae
  • Saccharomyces bayans
  • beer yeast
  • wine yeast
  • artificial selection
  • evolution
  • baking
  • monosaccharides
  • disaccharides
  • metabolism

Educational Standard
International Baccalaureate (IB)
Subject
Biology
Section
Options
Topic
B. Biotechnology and Bioinformatics

* The IB Diploma Program is an official program of the International Baccalaureate Organization (IBO) which authorizes schools to offer it. The material available here has been developed independently of the IBO and is not endorsed by it.

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