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You have discovered a new species of antelope that has particularly long legs that you name Dadduus longlegednis. When you examine the motor axons from a number of specimens, you notice that some of them seem to be suffering from some degree of demyelination. You determine that the resting membrane potential is ?70 mV and that the threshold potential is ?55 mV. In addition, you determine that the membrane resistance is 50 ?cm and the internal resistance is 2.5 ?/cm. a. So you first decide to determine how far the next node of Ranvier can be to still allow for the generation of another action potential with a sustained depolarization of 25 mV in a normal neuron. Please explain your answer and (of course) show all work and units. b. How would demyelination affect that number? Please explain your answer. c. What about axon diameter? How does it affect this number? Please explain your answer.
There is a compound that resembles thymidine, but once incorporated into the chromosome blocks any more nucleotides from being added.
Determine what effect did the agricultural revolution have on the growth of the human population?
Explain three things that a paleontologist must do to plan a fossil hunting expedition so that he is likely to find evidence to reply a specific scientific question.
The hypothetical OxyA protein is a surface protein that may have a role in attachment to the surface of the intestinal epithelium but there is evidence that it has a role in invasion. Write the structural formula for isoamyl alcohol.
A number of major worldwide industries are based on anaerobic respiration in a lower form of organism.define how anaerobic respiration plays a part.
Assume you are studying genes and DNAsequences involved in the regulation of the grandoperon. When your lab's strain of e. coli are in the presence of the sugar "grandiose," transcription of 2-enzymes grandAand grandB increases.
Did the amplitude of the action potential in median giant axon vary with stimulus voltage? What is the physiological basis for your answer?
As a result of single intake of 6.3x10^3 Bq of a radionuclide, a particular organ will receive doses of the 0.2 mGy from a low energy beta particles and 0.05 mGy from the alpha particles during next 50 y.
An analyzer is studying a gene that codes for a very small polypeptide phe his gly cys gly. He treated the cells with different mutagens with the results to the protein.
Determine the forces that cause the change in filtration rate as plasma passes through the capillary?
As a pea plant grows, its root cells divide by mitosis. If the diploid chromosome number of the plant is fourteen, how various chromosomes will each newly formed root cell have.
how to Analysis of an electron transport system in the cell. how to Calculate ΔGo' for the transfer of a pair of electrons between each of the carriers in the electron transport system. use the.
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