Answer:
Explanation:
1. All genes are not 'on' all the time. Using the metabolic needs of E.coli, E.coli regulate their gene expression to reserve resources when the environment is giving them what they need. E.coli feed on tryptophan, they produce it when tryptophan is low in the environment and they stop the production when it is abundant in their environment.
2. The two main ways of controlling metabolism in bacterial cells include;
3. E.coli is negative inhibition because it involves an operon being switched off by active form of repression protein.
4. A promoter is a site where RNA polymerase can bind to DNA and begin transcription
5. The operator is the 'on switch' for gene replication. it is positioned within the promoter or between the promoter and enzyme coding genes. it controls the access of RNA polymerase to the genes.
6. An operon is the functioning unit of DNA containing a cluster of genes under the control of a single promoter.
Genes are active only when the E coli is metabolically active.
Feedback inhibition in E coli for tryptophan synthesis is negative feedback
Operons consists of promoter regions and repressor regions for the
A gene is a region of DNA which contain information for the synthesis of a protein or any other product.
Genes are not all all the time in a E. coli in order to avoid overproduction of gene products.
Metabolic control in bacterial cells involves controlling enzyme activity and controlling enzyme synthesis.
Feedback inhibition in E coli for tryptophan synthesis is negative feedback as the product tryptophan inhibits synthesis of enzymes for tryptophan catabolosm.
A promoter is a region where RNA polymerase binds to DNA to initiate transcription
An operator is a region of where the operon is switched to active form.
An operon is a functional DNA unit consisting of multiple genes and a single promoter.
Learn more about operons and genes at: https://brainly.com/question/1427299
