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1-In normal cells an RTK receptor that binds to epidermal growth factor is present. When EGF is present in the extracellular space it binds to the receptor and initiates an RTK signal transduction cascade that ultimately tells the cell to undergo mitosis. Describe what would happen to cell division if […]

Here is this week’s essay question: NOAA vs. NASA Recently NASA began the Mars Science Laboratory mission in a multifaceted scientific project geared towards understanding the history of Mars geology.  Meanwhile the Earth’s ocean remains largely unexplored. If you were testifying before Congress as the head of NOAA or NASA […]

If a disease is co-inherited with a certain allele of a genetic marker in a pedigree, what does this suggest about the location of the disease gene with respect to the marker? a) The locations are far apart.b) The locations are the exact same.c) The locations are likely close together […]

Question: Calculate the amount of current (in nA) that flows during one AP for the [Na+] if the AP lasts for 1 msec. Vm=-70 mV Vo= 40 Initial [Na+]= 15 mM axon is 10 cm long radius is 10 um epsilon= 8.85E-12 C^2/ N m^2 dialectric constant is 3 Question: The loss […]