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The amino acid threonine has a hydroxyl side chain for which the pKa is 8.18. Calculate what fraction of the threonine side chains will carry a negative charge at pH 7.
Combustion analysis of a 13.42 g sample of equilin which contains only carbon, hydrogen, and oxygen produced 39.61 g CO2 and 9.01 g H2O. The molar mass of equilin is 268.34 g/mol. Find the molecular formula for equilin.
Describe the steps of the nitrogen cycle. How is nitrogen lost from ecosystems? How is it replaced? Why does it need to be "fixed?"
Discuss and explain the cis and trans acting regulatory elements and give examples of each?
The holoenzyme is denatured by heat at very high temperature. It is found that two polypeptides, although denatured, contains chains that remain together as a unit.
Discuss similarities and differences of artificial selection and genetic engineering of organisms. In your answer also include one advantage and one disadvantage for each technique, as well as one example of each.
Glucose-6-phosphate dehydrogenase deficiency (G6PD) is inherited as a recessive allele of an X-linked gene in humans. A woman whose father suffered from G6PD marries a normal man.
In a herd of Shorthorn cattle the frequency of the r allele is .4. Because of prevalence of pinkeye, white cows produce and average of 0.60 calves that reach puberty.
The chloroplast genome of most photosynthetic eukaryotes is roughly five percent the size of the genome of the cyanobacterium from which it is thought to have been derived.
Discuss and name all the muscles that are responsible for expanding the volume of the chest cavity during inspiration.
Angel is a biologist studying Lake Ecosystem in which leaf-eating insects are consumed by fish, which are consumed by snakes, which are consumed by hawks. In this case, how would you categorize a fish.
Compare the elution lane to the positive control lane. How do you know the recombinant protein present in the elution sample? How pure is the elution sample compared to the control?
Suppose an analyzer created a purebred strain of these smart mice and started breeding them with other mice to map the gene responsible for the phenotype.
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