Which of the following diagrams best models the regulation of the trp operon when tryptophan is present at high levels?

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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Which of the following diagrams best models the regulation of the trp operon when tryptophan is present at high levels?
The trp operon in E. Coli is a coordinately
controlled set of genes involved in tryptophan
biosynthesis. Tryptophan acts as a corepressor
of the operon, which means it binds to and
activates the trp repressor protein. This binding
is more likely to occur when tryptophan is
present at high levels in the cell.
The following symbols represent the
macromolecules involved in transcriptional
regulation of the trp operon:
Tryptophan
trp repressor protein
RNA polymerase
Transcribed Image Text:The trp operon in E. Coli is a coordinately controlled set of genes involved in tryptophan biosynthesis. Tryptophan acts as a corepressor of the operon, which means it binds to and activates the trp repressor protein. This binding is more likely to occur when tryptophan is present at high levels in the cell. The following symbols represent the macromolecules involved in transcriptional regulation of the trp operon: Tryptophan trp repressor protein RNA polymerase
Choose 1 answer:
A
Transcribed Image Text:Choose 1 answer: A
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