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MERLOT II


    

Learning Exercise


Material: Microarray technique animation
Submitted by: Judith Kandel on Jan 08, 2002
Date Last Modified: Jan 08, 2002
Title: Gene expression patterns in E. coli
Description: Students are asked to predict which kinds of E. coli genes might be expressed under one set of conditions and not under an alternate set of conditions.
Type of Task: Individual, Student-centered, Team, Unsupervised
Time Required 10 to 20 minutes depending on how many examples are used
Topics: Microarrays; gene expression; transcriptional control
Course: Microbiology, molecular biology
Audience: College General Ed
Categories:
Prerequisites Skills: Understand some basic biology of E. coli
Learning Objectives: To appreciate the power of microarray technology in understanding transcription patterns
To demonstrate knowledge about E. coli by applying it to a research question
Text of Learning Exercise: Using E. coli as an example, suggest a possible role for a gene that is
expressed:

In the presence of oxygen and not in the absence of oxygen
In the absence of oxygen and not in the presence of oxygen
During the stationary phase and not during the log phase
During log phase and not during stationary phase
In enriched media and not in minimal medium
In minimal medium and not in enriched medium
In the presence of lactose but not in its absence
In the presence of tryptophan but not in its absence

Explain your answers.
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