When wild-type E. coli are grown in media with high lactose and no glucose, which of the following statements are true? There is a basal level of lac Z, Y and A transcription ORNA polymerase can bind tightly to the lac Z promoter and activate a high level of transcription O RNA polymerase can bind tightly to the lac I promoter and activate a high level of transcription CRP protein is bound to the CRP binding site
When wild-type E. coli are grown in media with high lactose and no glucose, which of the following statements are true? There is a basal level of lac Z, Y and A transcription ORNA polymerase can bind tightly to the lac Z promoter and activate a high level of transcription O RNA polymerase can bind tightly to the lac I promoter and activate a high level of transcription CRP protein is bound to the CRP binding site
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
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Gene Interactions
When the expression of a single trait is influenced by two or more different non-allelic genes, it is termed as genetic interaction. According to Mendel's law of inheritance, each gene functions in its own way and does not depend on the function of another gene, i.e., a single gene controls each of seven characteristics considered, but the complex contribution of many different genes determine many traits of an organism.
Gene Expression
Gene expression is a process by which the instructions present in deoxyribonucleic acid (DNA) are converted into useful molecules such as proteins, and functional messenger ribonucleic (mRNA) molecules in the case of non-protein-coding genes.
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Transcribed Image Text:The lac operon regulates expression of genes required for the breakdown of lactose.
Use the schematic diagram of the lac operon to help you answer the following
questions about the lac operon.
Representation of the Lac operon and upstream
regions in E.coli (not drawn to scale!)
Indicates 1,000s bases
Indicates regions of DNA
lacz
lacz
lacz
gene
gene
gene
Lac I promoter
Lac I gene
CRP
lacZ
lac
lac Z
lacY
lacA
binding
site
promoter operator
gene
gene
gene
When wild-type E. coli are grown in media with high lactose and no glucose, which
of the following statements are true?
There is a basal level of lac Z, Y and A transcription
RNA polymerase can bind tightly to the lac Z promoter and activate a high level
of transcription
RNA polymerase can bind tightly to the lac I promoter and activate a high level
of transcription
CRP protein is bound to the CRP binding site
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