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Myasthenia gravis is an autoimmune disease affecting the neuromuscular junction. In myasthenia gravis, weakness occurs when the nerve impulse to initiate or sustain movement does not adequately reach the muscle cells. This is due to an autoimmune response in which immune cells target and attack the body's own cells. Antibodies are produced that attach to "affected areas", preventing muscle cells from receiving chemical messages (neurotransmitters) from the nerve cell. Using your knowledge of muscle contraction and how the nerve stimulation reaches the muscle cell, explain this disorder and how it interferes with contraction. What specific part of the muscle might the "affected area" be? Explain your choice. Would the administration of ACH or acetylcholinesterase possibly help the symptoms of this disease? Explain which one you think would help and why.
The dye used in the Simmons Citrate Agar is called bromthymol blue. It is green at neutral pH and turns blue as alkalinity increases.
give the main functions of microfilaments in the cell.
Describe the two types of RNA editing, outlining the different steps involved. Which type of editing involves the most significant changes in the mRNA sequence?
Suppose that you discover a new life form on Mars. These organisms have DNA containing the same four nucleotides as Earth DNA. They also make proteins using a triplet code, so they use the same 64 codons that Earth organisms do.
A double-stranded piece of DNA, 100 base pairs in size, is exposed to a high pH environment. This causes all non-valent interactions to be disrupted.
What are the disadvantage and advantage of each and which commonly applies to hospitality industry. How is this caused by the sympathetic nervous division.
Consider on all the things you learned about sex & sexuality while increasing from sources such as family, school, friends, TV, movies, music, magazines, Internet, and boy/girlfriends.
Determine the time domain equation that describes the change in drug concentration, C(t) for a given step increase in infused drug concentration, M?
You are given a stock solution of EDTA at a concentration of 5mM, how would you dilution of EDTA with a final concentration of 5mM in a final volume of 250mL?
You have a 1mM stock solution of Arsenic to treat culture cells in a liquid medium. You need to treat your cells with Arsenic such that it has a final concentration of 5nM once it has been added to the cells.
In horses, the genes for white coat color and red coat color are codominant. Heterozygotes have a light red coloration, called roan.
A young mother is encouraging her son to try another bite of a disliked food. The child is quietly whining, but when the mother spreads the food around to cool it, the child becomes hysterical. Why did child become so upset? Recognize the cognitive s..
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