Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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A cell contains 100 mM K+ and is surrounded by interstitial fluid containing 10 mM K+. The equilibrium potential for potassium is -58mV. What is the temperature of the cell, in degrees C? Enter your answer as a whole number. Do not use words or symbols.
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- You have a 12 mL sample of acetylcholine( a neurotransmitter) with an unknown concentration and a pH of 7.86. You incubate this sample with the enzyme acetylcholinesterase to convert all of the acetylcholine to choline and acetic acid. The acetic acid dissociates to yield acetate and hydrogen ions. At the end of the incubation period, you measure the pH again and find that it has decreased to 5.68. Assuming there was no buffer in the assay mixture, determine the number of nanomoles of acetylcholine in the original 12 mL sample.arrow_forwardIf the osmolarity of a solution of NaCl is 2.4 OsM, what would it be as a percent solution? MW of NaCl = 58.44 g/molearrow_forward
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