Classify the following examples of prokaryotic gene expression as positive or negative gene regulation. Positive gene...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
Classify the following examples of prokaryotic gene expression as positive or negative gene regulation. Positive gene regulation means the regulatory protein has a positive effect on transcription, negative gene regulation means the opposite. I am going to give you the answer to one of these, because we did not talk about this level of lac operon gene regulation in class: place "In the presence of lactose and low glucose, the lac operon..." in the "Positive gene regulation" box. Determine where to place the other choices on your own. Positive gene regulation Negative gene regulation In the absence of lactose, the lacR repressor protein binds the lac operon. If the sugar arabinose is present, an activator protein binds the promoter of the genes responsible for processing arabinose and induces their transcription. When excess tryptophan is present, a repressor protein binds the operator of the trp operon and prevents the operon from being transcribed. In the presence of lactose and low glucose, the lac operon is expressed 20-fold higher than in the absence of lactose. In the presence of iron, the dtxR repressor protein binds DNA, and the gene that encodes for the diphtheria toxin is not expressed. Mutations in which of the following lac operon genes or regions are cis-acting in their effect on the regulation of the operon? (Note: I will give you a diagram and labels for any detailed operon question on an exam. For now, please use the figures in your book.) laco lacl lacz lacP lacy Classify the following examples of prokaryotic gene expression as positive or negative gene regulation. Positive gene regulation means the regulatory protein has a positive effect on transcription, negative gene regulation means the opposite. I am going to give you the answer to one of these, because we did not talk about this level of lac operon gene regulation in class: place "In the presence of lactose and low glucose, the lac operon..." in the "Positive gene regulation" box. Determine where to place the other choices on your own. Positive gene regulation Negative gene regulation In the absence of lactose, the lacR repressor protein binds the lac operon. If the sugar arabinose is present, an activator protein binds the promoter of the genes responsible for processing arabinose and induces their transcription. When excess tryptophan is present, a repressor protein binds the operator of the trp operon and prevents the operon from being transcribed. In the presence of lactose and low glucose, the lac operon is expressed 20-fold higher than in the absence of lactose. In the presence of iron, the dtxR repressor protein binds DNA, and the gene that encodes for the diphtheria toxin is not expressed. Mutations in which of the following lac operon genes or regions are cis-acting in their effect on the regulation of the operon? (Note: I will give you a diagram and labels for any detailed operon question on an exam. For now, please use the figures in your book.) laco lacl lacz lacP lacy
Expert Answer:
Related Book For
A Concise Introduction to Logic
ISBN: 978-1305958098
13th edition
Authors: Patrick J. Hurley, Lori Watson
Posted Date:
Students also viewed these accounting questions
-
The speed of your automobile has a huge effect on fuel consumption. Traveling at 65 miles per hour (mph) instead of 55 mph can consume almost 20% more fuel. As a general rule, for every mile per hour...
-
The speed of your automobile has a huge effect on fuel consumption. Traveling at 65 miles per hour (mph) instead of 55 mph can consume almost 20% more fuel. As a general rule, for every mile per hour...
-
I am going to work for a hospital, which is a not-for-profit organization. Because there are no profits, I will not be able to apply any CVP analysis in my work. Do you agree with this statement? Why...
-
If the Albany highway system described in Problem 29 has revised flow capacities as shown in the following network, what is the maximal flow in vehicles per hour through the system? How many vehicles...
-
David Companys Statements of Income for the year ended December 31, 2008, and December 31, 2007, are presented here: Additional facts are as follows: a. On January 1, 2007, David Company changed its...
-
The global financial crisis led to increasing legal action against auditors as company managers searched for scapegoats and potential places to recover their losses. The tough economic times also...
-
What is horizontal analysis?
-
Rooney Company uses a flexible budget for manufacturing overhead based on direct labor hours. Variable manufacturing overhead costs per direct labor hour are as follows. Indirect labor ...... $1.00...
-
for nikes company financial statements for 2020 annual report, on NIKE company's website.. Perform an internet search on NIKE company's website to find the 2020 "Annual Report" and use the i...
-
Josie is an accounting supervisor at Monk & Sons Realty. She instructs her subordinate, Maria, to make certain accounting entries in the company's books that will increase revenue by a material...
-
You are told that P(A) = 0.4, P(B) = 0.5 and P(A or B) = 0.68 What is the value of P(A and B)? Please provide your answer in decimal form or percentage form, correctly rounded to two decimal places.
-
Due to sudden interest in its product, a local widget company is considering an expansion of its facilities. The company believes that it can sell widgets for \($0.18\) each. The tax rate for the...
-
The Euro Stade sells tickets for 100 per person and has a capacity of 100,000 people. Each person buys on average 20 of food and miscellaneous souvenirs. The cost of providing the food, souvenirs,...
-
Consider the linear regression model y = X + u . (a) Obtain the formula for ^ that minimizes Q ( ) = u W u , where W is of full rank. [The chain rule for matrix differentiation for column vectors...
-
Following the Covid-19 pandemic outbreak, which did not affect his territory, the Minister of Health of Pulau Vicente, a fictional South Pacific island, was concerned about future possible pandemic...
-
Earlier in this chapter you were introduced to Quick books software. As a group, do a web search for accounting software used by small business. Your search will likely give many choices, some of...
-
Assume you want $1,000,000 saved up by the time you retire. Suppose you decide to start saving at age 26. As of now, Social Security says you do not receive your full benefits until you are 66 years...
-
d) For die casting processes: 1. What are the most common metals processed using die casting and discuss why other metals are not commonly die casted? 2. Which die casting machines usually have a...
-
All oil-based paints are products that contribute to photochemical smog. In the following categorical propositions identify the quantifier, subject term, copula, and predicate term.
-
Two astronomers are discussing supernovas. Dr. Frank says, Research has established that if a supernova occurs within ten light-years of the earth, then life on Earth will be destroyed. Dr. Harris...
-
No individuals who laugh all the time are people with a true sense of humor. Therefore, no people with a true sense of humor are individuals who laugh all the time. Use conversion, obversion, and...
-
Your family has a cat, and no one wants to empty the litter box. However, it has to be done daily. The six of you agree to take turns, so everyone has to empty the litter box every 6 days. You empty...
-
If possible, use the product rule to simplify the following: 1. \(21^{9} \times 21^{15}\) 2. \(5^{9} \times 8^{4}\)
-
Use the quotient rule to simplify \(\frac{5^{19}}{5^{11}}\).
Study smarter with the SolutionInn App