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Hair splits most easily along its fiber axis, whereas fingernails tend to split across the finger (sideways) rather than along it. What are the directions of the keratin fibrils in hair and in fingernails? Explain your answer in molecular terms.
Henri tested the effects of a blood pressure reducing drug and found that blood pressure dropped significantly in those treated but did not change in an untreated control group. What is a reasonable conclusion from this experiment?
Explain Why does FADH2 have a yield of two ATP via the electron chain, but NADH yields three ATP?
How can 2 pairs of DNA loci be the same physical distance (in base pairs) apart, but vary in genetic distances (recombination frequency)?
Compute the number of RBC if the dilution is 1:50, the cell count is 400 cells counted in five (5) RBC squares of the hemocytometer.
Describe three differences between RNA and DNA with respect to their chemical composition and structure. Provide a detailed description of each characteristics you chose in your response.
Why might you find that your DNA isolation might have multiple "perfect" matches (1.000) for more than one species? Given that 16S genes are used almost universally to discrimanate between species, How can you explain this result.
What is the main chemical compound found in sewer gas? Why the presence of Thiobacillus (Acidibacillus) species can cause sewer pipe (cement or iron) corrosion? Please explain from the metabolic perspective.
Suppose after washing your hands, you leave ten bacterial cells on the new bar of soap. You next decide to do a plate count of the soap after it is left in the soap dish for 24 hours. You dilute 1g of the soap 1:10 and plate it on a standard plate co..
The Fas ligand is a trimeric, extracellular protein that binds to its receptor, Fas. The binding of Fas ligand to its receptor alters the conformation of Fas so that it binds an adaptor protein and activates caspase-8.
To stain your cells, you need to apply 0.75mL of staining solution to the fixed cells. How much is this in uL.
Describe a series of small habitats that exist within 10 or 20 kilometers of your house and which might be subject to MacArthur and Wilson's theory of island biogeography.
In a testcross of Aa Bb CC Dd Ee FF where the genes demonstrate independant assortment and determine the expected frequency of aa bb Cc dd ee Ff progeny?
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