more oxygen can be dissociated for metabolic reactions Mammals such as a mouse and a horse are able to maintain a constant body temperature. Suggest how these differences allow the mouse to have a higher metabolic rate than the horse - the mouse haemoglobin has a lower affinity for oxygen = 15 times faster The data in table 7 shows differences between the oxyhemoglobin dissociation curve for a mouse and the oxyhemoglobin dissociation curve for a horse. Use this equation to calculate how many times faster the metabolic rate of a mouse is than the metabolic rate of a horse 23(^-0.27)/550000(^-0.27) The following equation can be used to estimate the metabolic rate of an animal. heart rate = cardiac output/stroke volume Lower pressure Use information from figure 3 to calculate the heart rate of this dog. smooths the blood flow A student correctly plotted the right ventricle pressure on the same grid as the left ventricle pressure in figure 3.ĭescribe one way in which the student's curve would be similar to and one way it would be different from the curve shown in figure 3. because pressure in the aorta higher than in the ventricle At Q on figure 3 there is a small increase in pressure and in rate of blood flow in the aorta.Įxplain how this happens and its importance - the elastic recoil of the aorta wall Use evidence from Figure 3 to explain why. At this time, the rate of blood flow has not yet started to increase in the aorta. =9cm(^2) Īt P on figure 3, the pressure in the left ventricle is increasing. Use figure 8 and figure 9 to calculate by how much this leaf increased in area. One leaf with an original area of 60cm(^2) gave a voltage reading of -7μv.
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