If a mutation prevents the formation of the antiterminator 2+3 loop in the trp operon, what would be the effect?
A. no effect, as 2+3 loop has no function
B. transcription only when tryptophan is absent
C. transcription only when tryptophan is present
D. constitutive attenuation of transcription
E. constitutive transcription
Ans: D. constitutive attenuation of transcription
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Fill in the blank(s) with the appropriate word(s).
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a. store calcium b. reduce friction c. produce marrow d. carry nutrients e. resorb bone
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________ are complex communities of various types of microbes that adhere to surfaces
A) Aggregates B) Colonies C) Isolates D) Biofilms E) Media