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When activated by the extracellular signal protein platelet-derived growth factor (PDGF), the PDGF receptor phosphorylates itself on multiple tyrosines (as indicated in Figure 16-46A by the circled Ps; the numbers next to these Ps indicate the amino acid number of the tyrosine). These phosphorylated tyrosines serve as docking sites for […]

A cylindrical pulley with a mass of 6.2 kg, radius of 0.677 m and moment of inertia 12 M r2 is used to lower a bucket with a mass of 2.3 kg into a well. The bucket starts from rest and falls for 4.2 s. What is the linear acceleration […]

This problem poses the issue of the physiology of metabolism as related to long duration, endurance type of activity, like a marathon. Clearly the dietary requirements of a marathon runner would be different from a sprint athlete. These differences arise from the way the muscles work in a sprint event […]

You are working on corn and find that a particular locus you are studying influences the number of kernels in a row of corn, a quantitative trait. On average an ear of corn has ~800 kernels of corn in 16 rows. The locus you are working with appears to increase […]