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How does the contraction time of a typical finger twitch compare to the relaxation time?
Exercise 2: The Effect of Weight on Finger Twitches.Questions:1- Discuss how do the amplitudes of the finger twitches with different weights compare to each other?2- Why did the amount of work decrease when heavier weights were used?3- Is there any correlation between the weight moved and the contraction or relaxation times of the twitches?
Exercise 3: Stimulus-Response.Questions:1- At which stimulus current did the finger first show a twitch? Why didn't a finger twitch occur at a lower stimulus current?2- How does the finger twitch amplitude increase when the stimulus current is increased?3- Is there a stimulus current at which the amplitude of the finger twitch is maximized?4- Above a certain stimulus current, the amplitude of the finger twitch no longer increases. Why does this happen?
Exercise 4: Summation and Tetanus.Questions:1- At which frequency did summation first appear? At which frequencies does incomplete tetanus occur? At which frequency did complete tetanus first occur?2- How much greater than the amplitude of a single twitch is the amplitude of the tallest twitch during summation or incomplete tetanus?3- How much greater than the amplitude of a single twitch is the amplitude of complete tetanus?4- After the stimulator is turned off, the relaxation time after tetanus is much longer than relaxation time after a single twitch. Why?5- What is the name for the decrease in the level of constant tension that occurs during tetanus?
After verifying that the protein complex was incorporated into liposomes, you put in NADH and incubate at 37°C. You are dismayed to view no color change in the pH indicator dye.
The Neurospora cross was made between a strains that carried mating type A and mutant allele arg-1(arg) and another strain the carried mating-type a and the wild type arg-1 (+) gene. Four hundred linear octads were isolated and they fell into the 7 c..
If you transform bacteria with the plasmid library made in part b above, divide the transformatnts into 20 aliquots and find one has the insert of interest, now how many clones do you need to screen.
define how this cell would be activated the cellular and molecular interaction(s), and the various steps and factors leading to an appropriate immune response to clear the toxin.
NASA hopes they may one day be useful in producing some electricity on a spacecraft. What mode of nutrition do these bacteria most likely use.
Key parts of cardiac circulation that offers blood to wall of the ______, are the ______, the ______, the ______ and the ______. Lack of blood to the heart wall can result in ______ or in ______.
Cytopathic and non-cytopathic viruses elicit very different immune responses. The primary determining factor in the type of immune response to a viral infection is which of the following (select one)?Answer
Discuss when we compare amino acid differences to determine the evolutionary "distance" between organisms, what assumptions are being made about the rate at which mutations occur over time?
Which of the following is the most posterior group of axial muscles? Muscles of the shoulder girdle. Muscles of the head and neck. Muscles of the pelvic floor
The symptom of numbness of the palmar region often associated with carpal tunnel syndrome is caused by: Compression of the long extensor muscles of the hand. Compartmentalization of flexor and extensor muscles.
After WWII, DDT was widely used to kill mosquitoes. Spraying DDT was effective for some years, but despite continuous spraying at ever increasing concentrations of DDT,
Assume your professor handed you a test tube with 3.0 ml of an E.coli culture in it and told you to make a 10^(-3) dilution of the entire culture. Describe how you would do it.
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