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The gene that encodes the enzyme called tyrosine hydroxylase is known to be activated by the CREB protein. Tyrosine hydroxylase is expressed in nerve cells and is involved in the synthesis of catecholamine, a neurotransmitter. The exposure of cells to adrenaline normally up-regulates the transcription of the tyrosine hydroxylase gene. A mutant cell was identified in which the tyrosine hydroxylase gene was not up-regulated when exposed to adrenaline. List all the possible mutations that could explain this defect. How would you explain the defect if only the tyrosine hydroxylase gene was not up-regulated by the CREB protein, whereas other genes having CREs were properly up-regulated in response ot adrenaline in the mutant cell?
Explain the process of prokaryotic replication. Pay particular attention to the early stages. In your work, be sure to include the origin of replication, DnaA, components.
How can sex and reproduction be decoupled in Paramecium
If you had to guess, what environmental change led to both Reptiles and Gymnosperms becoming more prominent and Amphibians and Seedless Vascular plants becoming
How does such a sensitive organ protect itself against such common infections? What are the main causes for fungal eye infections
Why is it important to calculate the portion cost of a recipe in professional food service operations? Why is the full recipe cost inadequate?
Create an online for a research paper. The topic is "Listeria in ready to eat foods". Please write 5 pages including 6 references
Describe currently-known geographic distribution and time range of your dinosaur, citing at least one reference. Attach location map that show where Stegosaurus
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Can you describe strategic marketing management in your own words? Do you need to go to some of the reading resources to get an understanding.
Write an essay describing a disease found in the Integumentary or Musculoskeletal System.
If epithelium is cut, it heals in a week or so. Why is there such a difference in the healing rates of these tissues?
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