Which One of the Following Statements About the Transcription Attenuation

question 35

Multiple Choice

Which one of the following statements about the transcription attenuation mechanism is true?

• A)In some operons (e.g. ,the his operon),attenuation may be the only regulatory mechanism.
• B)Sequences of the trp operon leader RNA resemble an operator.
• C)The leader peptide acts by a mechanism that is similar to that of a repressor protein.
• D)The leader peptide gene of the trp operon includes no Trp codons.
• E)The leader peptide is an enzyme that catalyzes transcription attenuation.

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Definitions:

Field Experimental

A research study conducted in natural settings outside the laboratory to investigate hypotheses under more realistic conditions.

Correlation

A statistical measure that describes the extent to which two variables change together.

Cause-and-Effect Conclusions

Refers to conclusions drawn from observed relationships where a specific event, condition, or factor is considered to lead to another event, condition, or outcome.

Independent Variable

A factor or condition that is intentionally altered by an experimenter in order to observe its impact on another variable.