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Question 1: Explain how the presence of formed particles (i.e. red cells) in blood makes its apparent viscosity around four times that of plasma. Explain also why this apparent viscosity should depend on flow rate.
Question 2: In order to prepare a plasma sample, whole bood is centrifuged at 1200 rpm (20 revolutions per second). Given that the centrifugal acceleration is given by rω2 (ω= 2πf) and that the equivalent radius r is 10 cm, estimate how long blood samples should be centrifuged to ensure that the red blood cells will have packed down to the bottom of tubes in which the height of fluid is 5 cm. (Assume that the red blood cells obey Stoke's law).
Question 3: Explain some of the problems in measuring whole blood viscosity and why some methods are more reliable than others.
Summarize the two various camps of thought on the life cycle of Pfiesteria. Which set of the arguments do you determine.
The mythical Eurasian magnetic pinching beetle is able to manufacture and detect subtle variations in local magnetic fields. Male magnetic pinching beetles provide extensive parental care;
A 12-gram mixture of methane, CH4, and ethane, C2H6, is completely combusted in oxygen. If the total mass of CO2 produced is 34.8 grams, what was the approximate mass of the methane in the original mixture?
Max's regular exercise regimen has reduced his high blood pressure, allowing him to achieve normal blood pressure on a single antihypertensive medication.
A population of grasshoppers in the Kansas prairie has two color phenotypes, green and brown. Typically, the prairie receives adequate water to maintain healthy, green grass. Assume a bird that eats grasshoppers moves into the prairie.
Describe what would an overall underlying theme that connects all body systems.
The theory of recombinant DNA technology was enhanced and used in scientific research and now has practical medical applications in Gene Therapy.
Describe the potential legal and ethical issues associated with establishing new wild populations.
In this example, for every base designated Q, there is twice that amount of base R; for every base Z, there is twice that amount of base S. If molecule contains 33.33 percent R, what percentage of Z would you expect.
Plainfin midshipman female fish caught during the winter, non-breeding months do not respond to recordings of male plainfin midshipman's mating hum unless they are injected with certain steroids? What are these steroids and what class of receptors..
q1. when a jellyfish is removed from its saltwater environment and put into fresh water it swells and burst. do you
a hypothetical human trait is controlled by a single gene locus. four alleles have been identified:a,b,c,d. alleles a,b,c, are all codominant; allele dis recessive to all other alleles. how many phenotypes are possible? how many genotypes are poss..
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