A biologist was testing E. coli for thymidine requirement. She found a thy- point mutant and wanted to study reversion to thy+. She grew 20 cultures of the thy- mutant strain and plated them onto 20 plates that contained media to select for thy+ revertants. She obtained a total of […]

Comparison of Two Articles on Pepper Moth Evolution This week we started learning about evolution, so the two articles you will be comparing in this conference deal with the evolution of the Peppered Moth during the Industrial Revolution in England. Read the following articles and address the questions listed below. […]

Q.1. For the first portion of mission, you are to pilot your sub through the gastrointestinal tract to monitor the digestion of his meal. Explain all major structures you pass by or through, just like a tour guide would do. Also illustrate what happens to the meal during the digestion […]

Option I: The Effect of low pH on Enzyme Activity Design an experiment in which you will test the effect of an acidic fluid on enzymatic activity. Recall: enzymes are proteins! To complete this project, it may be useful for you to first review the Scientific Method Tutorial, the OLI […]