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The gene that encodes the enzyme called tyrosine hydroxylase is known to be up regulated by the CREB protein. Tyrosine hydroxylase is expressed in nerve cells and is involved in the synthesis of catecholamine, a neurotransmitter. The expose of cells to adrenaline normally up regulates the transcription of the tyrosine hydroxylase gene. A mutant cell line 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 to adrenaline in this cell line?
Two substances in the glass beaker chemically react, and the glass beaker becomes too hot to touch, if the two substances are defined as the system, what constitutes the surroundings.
Which of the physical forces can penetrate water most effectively and can thus be used to locate things in the ocean
A taxon of living bacteria uses the same electron transportchain for both aerobic respiration and photosynthesis. It is thought that this is an ancestral trait in prokaryotes. What does this suggest about the evolution of metabolism?
Draw and label a plot showing the expected relatonship between the melting point, Tm, and the % (A+T) in DNAs. A is Adenosine and T is Thymine. Provide two explanations fotr the observed relationship between Tm and the base composition shown in the ..
What is the RDA for iron for your age and gender and Is your intake above or below the RDA
whats morula in the female ovum after 7 days plus whats the difference between the haploid and the opposite
Using the time progression of industrialization and human development, This is an investigation of what is currently known about the question being asked
A farmer wishes to use genetically-modified crop in order to reduce cost on pesticides. The resistance gene, R, that provides protection for the crops is dominant and only 30 percent of the crops survive if they lack this gene.
Glycophorin A is a glycoprotein that extends across the red blood cell membrane. The portion of the polypeptide that extends across the membrane bilayer contains 19 amino acid residues and is folded into a alpha helix. The interior of the bilayer ..
A patient with Hep B has reduced liver function. How will the reduced liver function affect levels of hormones in the blood or urine.
Critique article Researchers unlock how cells determine functions - The citations must be inserted in the article along with reference of citation at the end. Must be at least 500 words.
q1. the assessment of a 60-year-old patient has taken longer than anticipated. in testing his pain perception the nurse
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