in prokaryotic genes, why would it be advantageous for an entire operon to be included in a pathogenicity island? what would be its disadvantages?
in prokaryotic genes, why would it be advantageous for an entire operon to be included in...
7. Are all prokaryotic genes expressed all of the time? Why or why not? How does the cell know which genes to express and when?
4. Briefly draw and/or describe the functions of the genes contained in the lac operon. Why is a low level of lac operon expression necessary for it to respond to the presence of lactose ?
for 1-5 define those The Lac operon is an inducible set of genes found in bacteria cells that helps the bacteria to metabolize the disaccharide lactose. When it is turned on it produces proteins that pump lactose into the bacteria cell and break it down into glucose and galactose, which can then be used by the bacteria as a source of energy The two figures below show the Lac Operon along with the lacl gene (which regulates the Lac operon...
P OPERON What happens to transcription at the trp operon when 1. tryptophan levels are low? Why? 2. Illustrate it. Include: RNA repressors erase, repressors, and any other molecules needed to show how this worke. GENE TURNED ON -+ + +- Promoter OperatorStructural Genes 3. What happens to transcription at the trp operon when trypto 4. Illustrate it. Include: RNA polymerase, e, repressors and any other molecules needed to show the following GENE TURNED OFF Promoter Operator Structural Genes Circle...
Which of the following would be most likely found within an operon with other genes? a. A gene for antibiotic resistance b. A gene encoding a ribosome c. A gene responsible for synthesizing a metabolic intermediate d. A gene encoding a DNA polymerase
9. Why would the ability to taste PTC be an advantageous phenotype?
Page < 2 > of 2 D. The trp operon would be expressed at high levels, comparable to its expression in the absence of trp 6. Based upon what you have learned about the E. coli trp operon, what could you say about expression of its structural genes in cells with large amounts of environmental trp, but expressing a mutant trp repressor that is unable to bind trp? A. The trp operon would be completely repressed due to the abundance...
7. On the consumer side, why are prices advantageous over a system of distributed baskets where people can trade amongst themselves? After all, people in the priceless trading system can end up with baskets that make them happier than what they received. So what advantage do prices confer for consumers? (Hint: Pareto efficient should be included in this answer.) 8. On the producer side, why are prices advantageous over a system where each producer would make some amount of goods...
Questions The citrate (cit) operon 1. Operons are the basic unit of gene expression in prokaryotes. Explain the role of each of these operon components in prokaryotic gene expression: structural genes, promoter, repressor, and operator 2. Fully describe the E. coli cit operon as it functions in conditions without oxygen. Include promoter, repressor and operator in your description. 3. The cit operon is under negative control. What does that mean and how is this operon negatively controlled? 4. What is...
Why is voltammetry advantageous over other methods of electroanalysis (coulometry and potentiometry)? What are the advantages and disadvantages of other methods? What method of (cyclic linear sweep, square wave, normal pulse) voltammetry should be used for studying a redox reaction?