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1) Describe the etiology and genetics of the disease phenylketonuria (PKU).
Phenylketonuria (PKU) refers to a disease found in the humans in which the affected individual does not have enzyme phenylalanine hydroxylase. This enzyme is required to metabolize the amino acid phenylalanine to tyrosine. When left untreated phenylalanine will be transformed to phenylketone and accumulates within the body leading to the brain development disorders, mental retardation and seizures. Consider two normal adults with one child who has the trait and a second child who is normal.a) Explain whether PKU inherited as a dominant or the recessive trait?
b) Describe how you came to this conclusion
c) State the genotypes of the each of the parents?
d) Explain what is the genotype of the child with PKU?
Lipid metabolites are often seen as key elements in cellular signaling. Is this unique? Please provide several examples of the function of lipids as key elements in signal arrays and list the biologic functions these signals affect?
Which of the subsequent statements is true about phylogeny. The ancestral group frequently has all the synapomorphies of the descendant species.
Describe why gram-negative bacteria are more resistant to biocides than gram-positive bacteria. Be exact and descriptive in the response. A description of the differences between gram-negative and gram-positive bacteria must be included, along with a..
In some cases the first gene in the linear sequence appears to be transcribed at a much higher rate than the second and subsequent genes (as in many but not all mRNAs contain the sequences encoded by gene 2 and beyond).
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Listing all the possible parent crosses for the ABO blood group. There must be 21 possible crosses.
Which of the next statements is untrue of the light reaction in photosynthesis.
Calculations must be made assuming that the minimum significant number has four significant digits. If all of phosphorus in a 3.00 gram sample of MgNH4PO4 is extracted and used to make a diphosphorus pentaoxide, what mass of P2O5 could be produced.
How various moles of NaOH would be necessary to titrate one mole of the fully protonated peptide to it's fully unprotonated form. What was inspecting in order to get this information.
Explain the process of the Meiosis and the Sexual Life Cycles. Eukaryotic cells may divide through the mitosis or meiosis. In humans, mitosis generates new cells for the growth and repair.
He says that the mere presence of DNA is not sufficient to prove the point: his cells may have adopted DNA as a useful molecule quite independently of all other known life forms. What would you do to convince him that he was wrong.
He was puzzled, combative, and he refuses to drink any water or any liquid. He lived on Oct. 7th, 1849. While said to the man's name, the student thought "Nevermore!" What was his diagnosis.
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