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Q1: W7 Q5 To combat chronic disease, public health strategies should be targeted towards Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. Individuals Populations Both individuals and populations Neither individuals nor populationsSee Answer
Q2:W7 R5 Homework Unanswered Since the 1960s, death rates for heart disease and stroke have drastically decreased while death rates for cancer have changed very little. Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. b True False Unanswered W7 R6 Homework. Unanswered Men are more likely than women to have multiple chronic conditions. Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. Submit Open in ReacSee Answer
Q3:Heart disease is the leading cause of death in the U.S. among Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. Men only Women only Both men and women Neither men nor womenSee Answer
Q4:Which risk factor is the leading cause of cardiac disease and stroke in the U.S.? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to sflect an answer. a b с W7 R9 Homework Unanswered d High blood pressure High cholesterol Overweight Diet high in saturated fatsSee Answer
Q5:W7 Q10 Which of the following did NOT play a role in the decline in heart disease deaths seen since the 1950's? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. Declines in average weight Declines in average blood pressure levels Declines in average blood cholesterol levels Declines in cigarette smokingSee Answer
Q6:Discuss the neurocircuitry of impulsive-compulsive disorders. For this discussion, address how an impulsive act can become a compulsive act. Compare and contrast obesity as an impulsive-compulsive disorder and impulsive-compulsive disorders of behavior. Compare and contrast nicotine and alcohol addictions. For this discussion, emphasize the mechanism of action, receptors, and any pathways involved.See Answer
Q7: 2(b). What is the maximum compressive force, Fmax, that both tibia (i.e. assume landing on both feet simultaneously so that the impact is distributed equally over both legs) can withstand without compressive fracture? Hint. TheSee Answer
Q8: 4(a). Explain what is meant by“accommodation" with respect to the functioning of the human eye. How does the crystalline lens aid in this function? Use diagrams as needed. See Answer
Q9: 1(b). Explain how these two scaling laws predict that there is a maximumbat body mass above which bats would not be able to fly.See Answer
Q10: 4(b). Determine the range of sight(distances from eye over which the images of objects can be focused on the retina) for a normal sighted person underwater? Hint, the index ore fraction of water is 1.33See Answer
Q11: An empirical equation is obtained by doing a linear regression fit to a log-log plot of observed wing-beat frequency (fw) compared to body mass (Mp) of many species of bats. The data and corresponding relation are shown in the figure. 1(a). With reference to the above plot, explain what is meant by an allometric scaling law. The largest existing bats (Pteropus) have a body mass of about 2 kg. Fossil remains for an extinct bat species, Pteropus Gigantus, indicate that this bat species had a body mass of about 3.5 kg, but was incapable of flight. 1. The maximum wing-beat frequency (fw,max) which can be achieved within metabolic rate constraints is proportional to Mp 2. The minimum wing-beat frequency (fw,min) Which is required for flight is proportional to Mp-1/6See Answer
Q12: 5.11 A metal micro electrode has a tip that can be modeled as being cylindrical.The metal itself is 1 um in diameter, and the tip region is 3 mm long. The metal has a resistivity of 1.2 x 10- N.cm and is coated over its circumference with an insulation material 0.2 um thick. The insulation material has a relative dielectric constant of 1.67. Only the base of the cylinder is free of insulation. a. What is the resistance associated with the tip of this microelectode? b. What is the area of the surface of the electrode that contacts the electrolytic solution within the cell? The resistance associated with the electrode-electrolyte interface of this material is 103 0 for 1 cm?. What is the resistance due to this micro electrode's contact with the electrolyte? c. What is the capacitance associated with the tip of the microelectrode when the capacitance at the interface of the electrode-electrolytic solution are neglected? d. Draw an approximate equivalent circuit for the tip portion of this microelectrode. e. At what frequencies do you expect to see distortions when the electrode is connected to an amplifier having a purely resistive input impedance of 10 MO? You may assume that the reference electrode has an impedance low enough so that it will not enter into the answer to this question. If the amplifier's input impedance is raised to 100 MN, how does this affect theSee Answer
Q13: 3. Describe the physico chemical properties of a drug which makes it suitable for formulation as a transdermal patch and explain how the trans dermal patch should be used.See Answer
Q14: 4. In humans, eye colour is determined by a gene that produces a pigment found in the iris. The allele for brown pigment (B) is dominant to the one for blue pigment(b), A blue-eyed man and a brown-eyed woman decide to have a child. 1. What is the father's genotype? 2. What could the mother's genotype be? 3. Let's imagine that they had a blue-eyed baby. Does this help you figure outwhat the mother's genotype is? Use Punnett squares to illustrate yourexample.See Answer
Q15: 5.5 Design the electrode of the smallest area that has an impedance of 10 0 34100 Hz. State your source of information, describe construction of the electrode and calculate its area.See Answer
Q16: Linda's son thinks a biopsy might be necessary and urges her to follow-up with a dermatologist. In your own words, briefly describe the process of a skin biopsy.See Answer
Q17: Q6.5. Could the cell shown above proceed past the metaphase checkpoint exactly in its current state, without any additional changes in the spindle or chromosomes? a.No, because each spindle pole has extra micro-tubules that are not attached to chromosomes. b.No, because not all chromosomes are fully attached to the spindle or lined up along the midline. c.Yes, because each chromosome is attached to the spindle and they are lined up on the midline. d.Yes, because each chromosome has sister chromatids, allowing cohesin to dissolve.See Answer
Q18: 2. Protists are the most varied group of organisms that we studied this term. They display unique adaptations in feeding, reproduction, and lifestyle (parasitism, free living, etc) among many others! Discuss protist evolution,including an overview of the major groups, and the breadth of variations that occur within this paraphyleticclade. How did protists lead to the evolution of the rest of life on Earth?See Answer
Q19: 5.18 A pair of biopotential electrodes are implanted in an animal to measure the electrocardiogram for a radio telemetry system. One must know the equivalent circuit for these electrodes in order to design the optimal input circuit for the telemetry system. Measurements made on the pair of electrodes have shown that the polarization capacitance for the pair is 200 nF and that the half-cell potential for each electrode is 223 mV. The magnitude of the impedance between the two electrodes was measured via sinusoidal excitation at several different frequencies.The results of this measurement are given in the accompanying table. On the basis of all of this information, draw an equivalent circuit for the electrode pair. State what each component in your circuit represents physically, and give its value. See Answer
Q20: 5.8 A pair of biopotential electrodes is placed in a saline solution and connected to a stimulator that passes a direct current through the electrodes.It is noted that the offset potentials from the two electrodes are different.Explain why this happens during the passage of current. Sketch the distribution of ions about each electrode while the current is on.See Answer

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