Question

In: Biology

(20 pts) Describe the four types of inducible repression. Explain how they cause repression (4 pts...

(20 pts) Describe the four types of inducible repression. Explain how they cause repression (4 pts each). Identify whether they are cis acting or trans acting (1 pt each).

Solutions

Expert Solution

Solution: Inducible repression is common in polycistronic gene expression in prokaryotes. The operation of lactose operon can be considered as one example. In lac operon absence of lactose leads to the synthesis of repressor from a separate promoter. These repressor proteins, which are trans acting will binds to specific regions on the DNA called as operator region and induce repression to the operon. When lactose is present in the medium, also glucose is absent, the operon gets switched on by removing the repressor. The galactose operon in prokaryotes and regulation of galactose metabolism in eukaryotes are inducible. In eukaryotes generally the galactose metabolism is repressed by a trans acting repressor Gal 80. The Gal 80 repress the upstream activator protein Gal 4. In the presence of lactose this repression is over ruled by another protein which binds to Gal 3. Gal 3 bounded with galactose binds and remove Gal 80 naking Gal 4 free. The released Gal 4 activates the galactose metabolism.


Related Solutions

In your own words, describe the four types of inducible repression. Explain how they cause repression...
In your own words, describe the four types of inducible repression. Explain how they cause repression (4 pts each). Identify whether they are cis acting or trans acting (1 pt each).
Distinguish between inducible operons and repressible operons and explain how they work. Describe the three types...
Distinguish between inducible operons and repressible operons and explain how they work. Describe the three types of prokaryotic genetic recombination (conjugation, transformation, and transduction). Explain how recombination might interfere with the metabolic functions of operons, such as the lac operon or trp operon of E. coli.
Question 3 (20 Marks) 3.1. Describe four (4) types of appraisal methods to justify IT investment...
Question 3 3.1. Describe four (4) types of appraisal methods to justify IT investment evaluation and its specified evaluation methods. 3.2. Discuss the Information Systems department and how it is utilized to manage End-User relationships. Include in your discussion an outline of the FOUR (4) ISD approaches that could be applied by an organisation.
Endotoxin is a major cause of septic shock. Describe (2 pts) where endotoxin comes from, (4...
Endotoxin is a major cause of septic shock. Describe (2 pts) where endotoxin comes from, (4 pts) the specific steps the innate and acquired immune system takes to respond to endotoxin in the blood stream. Explain the steps from the recognition of endotoxin by the innate immune system to the response by the acquired immune system. (2 pts) how the immune system response leads to septic shock.
13. (4 pts.) List and describe two of the four ways that a company’s management can...
13. (4 pts.) List and describe two of the four ways that a company’s management can demonstrate that safe and healthy work practices are a required part of every employee’s job. 15. (4 pts.) True or False: No one person can expect to be an expert in the wide range of workplace safety and health issues. Explain your answer. I was having trouble finding clear answers in my text book
(8 pts) Endotoxin is a major cause of septic shock. Describe (2 pts) where endotoxin comes...
(8 pts) Endotoxin is a major cause of septic shock. Describe (2 pts) where endotoxin comes from, (4 pts) the specific steps the innate and acquired immune system takes to respond to endotoxin in the blood stream. Explain the steps from the recognition of endotoxin by the innate immune system to the response by the acquired immune system. (2 pts) how the immune system response leads to septic shock.
Describe four (4) types of non-probality sampling in business research
Describe four (4) types of non-probality sampling in business research
Describe four innovative bond types, and explain why were they created and how these bonds works?
Describe four innovative bond types, and explain why were they created and how these bonds works?
4. [30 pts] 20 liters of water at 20 bar and 100 °C are in a...
4. [30 pts] 20 liters of water at 20 bar and 100 °C are in a variable volume container. 56,000 kJ of heat are added to the system at constant pressure which causes an increase in both temperature and volume. a. [4 pts] Draw a schematic of the process b. [4 pts] Write the energy balance for this process and clearly state any assumptions: c. [12 pts] What is the final volume of the container? d. [8 pts] How much...
Describe and explain the four types of unemployment that can be found in a given nation....
Describe and explain the four types of unemployment that can be found in a given nation. What is considered to be the Natural Rate of Unemployment? Describe what is included and excluded in the National unemployment rates.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT