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The resting potential of a cell is -71.5 mV assuming conductance ratios of gK:gNa:gCl = 1: 0.02: 0.03 and equilibrium potentials of EK=-70mV, ENa=+50mV, ECl=-55mV. a. Assume that the conductance ratios change to gK:gNa:gCl = 1:40:0, as might happen at the peak of the action potential. What is the membrane voltage under this condition? b. Calculate the peak of a Calcium-based spike. Assume gK:gNa:gCl: gCa = 1:0:0:40. Is this more or less than the peak of the Sodium-based spike? Given that both conductances are the same, explain the discrepancy (1 sentence). Use ECa=+125mV. Goldman equation may be of help:
c. Draw the balance model for i) the peak of the sodium based action potential and ii) the peak of the calcium based action potential.
Suppose if the average hydrostatic pressure in glomerular capillaries is 55 mmHg, the hydrostatic pressure in Bowman's space is fifteen mmHg, the average colloid osmotic pressure in the glomerular.
What is the parental generation for the mapping experiment? What assumptions are you making for the parental generation of the mapping experiment? Give the phenotype and genotype of parental generation.
Tongue rolling is dominant to non-rolling and PTC tasting is dominant to non-tasting. Show the cross between two individuals who are heterozygous for both traits. Give the phenotypic ratio of offspring.
What if you were using a plasmid that was 10 kb in size. You still want to use .05 pmoles of your target DNA. How many micrograms of DNA will you need for the transposition reaction?
What is the expected evolutionary significance of genetic recombination?
Refer to your textbook for more detailed data about the layers of human skin. Indicate whether each of the following structures is found in the epidermis, dermis, or subcutaneous layer.
What percentage of females is expected to beheterozygous?
Describe a controlled experiment that could have produced the data shown for either temperature or pH. Be sure to state a hypothesis that was tested here.
watch a 5-minute video on the creation of a devils garden in peru. httpwww.youtube.comwatch?vy0m8qscjcdm . this is an
What can be concluded about your prediction of expected F2 progeny phenotypic outcome from the F1 cross? Was it close to the observed outcome?
What is the use of having restriction enzyme sites at the 5' beginning of the luciferase gene and a set of restriction enzyme cut sites at the 3' end of the luciferase gene.
q1. if a human wants to eat about 10 000 kj per day approximate to the nearest gram the mass of phytoplankton that
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