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Hemoglobin is composed of four polypeptide chains (subunits) whereas myoglobin, which is structurally related to the subunits comprising hemoglobin and about the same size as one such subunit, contains only a single polypeptide chain. Which is likely to have the lower polar/nonpolar amino acid ratio, that is to have the highest percentage of nonpolar amino acids, a hemoglobin subunit or myglobin? Justify your answer.
Discuss the purpose of the immune system is to recognize foreign bodies and respond with the production of immune cells and proteins.
It is commonly reported that up to 50 percent of a cell’s energy budget is spent on protein synthesis. How do you suppose such a measurement might be made?
What biological structure does the winding stairs in Jerome's apartment resemble and what components are represented by the "rails"?
Explain physiological changes that occur in three different organ systems when food is ingested and how these systems coordinated a response in the human body.
find out the major pathway of glycine degradation. you find that the amino acid serine contains the most radioactivity, and that both the Calpha and Cbeta carbons of the serine residue are labeled with 13C. Explain these observations.
Kangaroo rats native to North American deserts have very efficient kidneys. They excrete an exceedingly small volume of highly-concentrated urine in order not to lose much water from the bodies.
Several traits are affected by the environment, but also have a genetic component. How can we partition the sources of variation? Write a formula for this.
A porcupine eats 3,000 J of plant material. 1,600 J is indigestible and is eliminated as feces. 1,300 J are used in cellular respiration. What is the estimated production efficiency of this animal.
What are some of the unique circumstances of forensic genetic evidence.
Phosphonylation, a chemical surface treatment, has been proposed as a means of increasing the hydrophilicity of LDPE, and therefore increase its lubricity and reduce vascular tissue damage.
Although physiologically distinct, chemolithotrophs and chemoorganotrophs share a number of features with respect to the production of ATP.
The big majority of the frogs in this population are green. A few individual frogs carry a mutation that prevents the production of the green pigment.
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