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Q. After prolonged exposure to isoproterenol, that binds to b-adrenergic receptors and activates adenylate cyclase, cells become refractory and cease responding. To investigate this phenomenon, you treat cells for a variety of times with isoproterenol, wash it out, and next assay for b-adrenergic receptors by measuring binding of dihydroalprenolol, that […]

DNA sequences are used quite often to find evolutionary relationships between species . Why is the DNA sequence of one gene a less accurate indicator of the evolutionary relationship between two species than a comparison of large portions of the two genomes? Discuss. 2.Some genes are more alike between humans […]

Q. 1.how many kilograms of killer whale would be produced by 10,000 kg. Of diatoms? 2. How numerous kilograms of blue whale would be produced by 10,000 kg? Of diatoms? 3. Let’s look at this form from a different perspective: How many kilograms of diatoms are essential to build 1 […]

Q1. A standard procedure in pufying tubulin is to extract tissue on ice, then put in GTP and warm the tissue extract to 37C. The warmed extract is then centrifuged at a speed insufficient to pellet average sized proteins, but sufficient to pellet large protein complexes. After centrifugation, supernant is […]