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Q. The human circulation flows at the rate of 5 l/min (5 liters/min) at a mean (constant) arterial pressure of 100 mmHg, and at a mean venous pressure of 2 mmHg. Recall that human circulatory system is closed such that flow at any one point is the same. Suppose the […]

Q1. How many nucleotides would it take to construct the coding strand of the globin molecule? Explain how you determined the answer. Q2. A 28-year-old, otherwise healthy white female on no medications presents to the ER with chest pressure, dizziness, numbness in both hands, and feeling of impending doom that […]

1. Go to the link http://media.hhmi.org/biointeractive/click/shells_online/index.html and work through the lab sorting sea shells based on morphological characteristics to study evolutionary relationships. 2. Please take notes for your laboratory report. You will add an introduction later. Write a short note describing each step of identifying and selecting snails as you […]

Think about these two facts: a) The alpha-subunit of the G-protein trimer has an intrinsic GTPase activity, which is important in terminating the action of G-protein coupled systems.  b) The CFTR is activated by cAMP.  Here’s the question: If you introduced a toxin into the intestinal cell that blocks the intrinsic GTPase […]