What is the role of catabolite activator protein (CAP) in the lactose operon of E. coli? it prevents RNA polymerase from binding to the promoter when lactose levels are high it assists RNA polymerase in binding to the promoter when glucose levels are high it prevents RNA polymerase from binding to the promoter when glucose levels are low it assists RNA polymerase in binding to the promoter when glucose levels are low it prevents RNA polymerase from binding to the promoter when lactose levels are low In the lac operon (above), what happens when glucose levels are low, but lactose levels increase? the repressor protein is detached from the operator, and transcription is not initiated the repressor protein is attached to the operator, and transcription is not initiated the repressor protein is detached from the operator, and transcription is initiated the repressor protein is attached to the operator, and transcription is initiated all of the above occur at equal rates when glucose levels are low but lactose levels are high
Bacterial Genomics
The study of the morphological, physiological, and evolutionary aspects of the bacterial genome is referred to as bacterial genomics. This subdisciplinary field aids in understanding how genes are assembled into genomes. Further, bacterial or microbial genomics has helped researchers in understanding the pathogenicity of bacteria and other microbes.
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Plasmids and Vectors
The DNA molecule that exists in a circular shape and is smaller in size which is capable of its replication is called Plasmids. In other words, it is called extra-chromosomal plasmid DNA. Vectors are the molecule which is capable of carrying genetic material which can be transferred into another cell and further carry out replication and expression. Plasmids can act as vectors.
What is the role of catabolite activator protein (CAP) in the lactose operon of E. coli?
- it prevents RNA polymerase from binding to the promoter when lactose levels are high
- it assists RNA polymerase in binding to the promoter when glucose levels are high
- it prevents RNA polymerase from binding to the promoter when glucose levels are low
- it assists RNA polymerase in binding to the promoter when glucose levels are low
- it prevents RNA polymerase from binding to the promoter when lactose levels are low
In the lac operon (above), what happens when glucose levels are low, but lactose levels increase?
- the repressor protein is detached from the operator, and transcription is not initiated
- the repressor protein is attached to the operator, and transcription is not initiated
- the repressor protein is detached from the operator, and transcription is initiated
- the repressor protein is attached to the operator, and transcription is initiated
- all of the above occur at equal rates when glucose levels are low but lactose levels are high
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