Today, the enrichment culture technique developed over a century ago by Martinus Beijerinck remains a feasible approach to discovering bacteria capable of degrading pollutants
Indicate whether the statement is true or false.
Answer: TRUE
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Which of these habitats is likely to harbor the most recently diverged species?
A) A5 B) B4 C) A3 D) B2 E) A1
Genes under positive control are ____
a. off until they are turned on b. always expressed
c. expressed unless a repressor protein is present d. controlled by several promoters to increase transcription e. regulated by feedback inhibition
A selective medium contains one or more substances that inhibit growth of some microbes to facilitate the growth of other desired microbes.
Answer the following statement true (T) or false (F)
The study of genetic variations that affect people’s responses to environmental agents, including man-made chemicals,
is called ____________________. Fill in the blank(s) with the appropriate word(s).