Studying
Cell Biology Preface | Introduction to Problem Solving | Problem Sets | Acknowledgments |
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1. (12 pts) Remember the giant squid recorded Alices Scientific Journal? These LGW (Looking Glass World) predators have complex muscular and nervous systems, and their excitatory cells (and surrounding fluids) exhibit the ionic concentrations (in mM) listed in the table below. Trans Looking Glass monovalent ions differ from ours, and the ones commonly found in organisms on the other side are represented in the Table below:
Patch-clamping measurements indicate stimulated squid nerve and muscle cells exhibit striking changes in membrane potential as indicated below; these changes are called LAPs (or Looking-Glass Action Potentials). The resting membrane potential is +88 mV, and the log values for the ratio of the inorganic ions are indicated along the side. Alice found the temperature over there a uniform temperature of 298 oK.
Answer all the following questions, showing all relevant calculations.
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