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11. Consider a squid axon bathed in seawater under artificial conditions, and the following on
concentrations: [K]i = 400 mM and [K]o = 10 mM, [Na]in = 50 mM, [Na]o = 460 mM.
Predict equilibrium potentials EK and ENa at a temperature of 13oC. Assuming that the Na permeability of the cell membrane is 1/50 that of the K permeability, predict the resting potential, Em, assuming that Cl is in equilibrium.
13 Adjacent to the neuron is a glial cell, which has no sodium channels in the plasma membrane.
Predict its resting potential, using the ion concentrations provided in Problem 11.
How many 10 micrometer yeast cells could fit across the field. In a guinea pig, black is dominant to brown, and solid colour is dominant to spotted. A heterozygous black, solid-coloured pig is mated with a brown, spotted pig.
If repressor tetramer uses only two of its subunits to bind to an operator sequence, why is tetramer formation so important to the control of lac operon gene expression.
Assume you are given a test tube containing ten mL of a solution with 6.7 times 109 cells/mL. You are to produce a solution that contains less than 100 cells/mL - but not exactly 100.
The basic differences between RNA and DNA are.
Suppose that the breeder selects plants that mature in 69 days for the next generation. Approximation the time required for the next generation to mature. What kind of infection do you believe she has in this hand.
The use of PCR and genetic approaches in biotechnology
In the figure below, suppose the left-hand individual is selfed. What pattern of radioactive bands would you see in a Southern analysis of the progeny?
Test the given hypothesis of the secondary exposure to cigarette smoking during childhood has importance in developing the lung cancer in person.Describe how efficient is surgical treatment for the Ankylosing Spondylitis.
Are there any nutritional values that might be present in locally grown produce that might not be present in produce shipped in from other areas of the country?
Diplomonads, such as Giardia contain two haploid nuclei per trophozoite. Thus, During the G1 phase of the cell cycle, there should be a total of how several unreplicated chromosomes per trophozoite, and throughout the G2 phase, how many replicated ch..
I in brief describe how a mutation might alter gene function (at the molecular level) if it fell into the following categories. As an example, a neomorphic mutation could result from expressing a gene in a novel location.
An enzyme catalyzes a reaction at a velocity of 20 umol/min when the concentration of substrate (S) is 0.01 M. The Km for this substrate is 1 x 10-5 M. Assuming that Michaelis-Menten kinetics are followed,what would be the reaction velocity?
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