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Question: Assume you are provided an isolated muscle with its motor nerve intact. The preparation allows you to make electrophysiological measurements from the nerve and muscle as well as mechanical measurements of muscle contraction. You observe that if Drug A is added to the fluid bathing the preparation, the peak tension developed in a muscle twitch produced by stimulating the motor neuron is decreasedList all possible locations at which Drug A might be exerting its effectDrug A is known to alter the transmembrane movement of cations. Which of the sites you listed above would fit this mechanism of action?Suppose high concentrations of Drug A block muscle contraction completely in the presence of motor neuron stimulation. This effect is not prevented by high levels of either Ach or Ach- nicotinic receptor agonists. Now where do you think Drug A is acting? Justify your response.
You have a 10x enzyme buffer that you are to use in a particular reaction. The total volume of the reaction is 30 micro liters. Determine how much of the 10x buffer should you add so that the final concentration of buffer in the reaction is 1x?
What would be the effect on blood pressure and phsiological basis of a blow to the head that damages the vasomotor center.
If you continue adding drops of bromine to each, eventually lipids change color. For our experiment it took 14 for lard, 23 for olive oil, and 35 for corn oil. Yet, the iodine numbers for each were 59, 81, 123 respectively. Would you consider the ..
Assume you have a gel filtration column with unknown matrix. Describe how do you experimentally deteremine its void volume and exclusion limit
Determine which components of the urine would be raised if a person were on a very low carbohydrate, weight-reducing diet? Explain the process involved?
Discuss the similarities and differences between fungi and protists. How do both of these kingdoms differ from the kingdom Eubacteria?
LDL particles have a higher percent content of cholesterol and cholesterol esters than VLDL particles. Describe the catabolism of the VLDL particles that occurs in the circulation and how this accounts for the increased content of cholesterol in t..
Cellular Respiration and the Photosynthesis co-exist as the paired metabolic processes. Photosynthesis utilizes light energy to transform carbon dioxide into glucose, a simple sugar.
Think about an artificial animal cell which contains 0.3 mmol/L NaCl (MW: 58.5 g/mol) and 0.01 mmol/L glucose (MW: 180 g/mol) in the cytoplasm.
Discuss the greatest effect on determining which mutations will go to fixation in both a large population and a small population?
Which term describes tonicity of the external solution. Were latitude the only control of temperature, the isotherms would run straight across the map from east to west. Describe one region of the world where this hypothetical isotherm pattern is rea..
Explain what a new mom can expect to happen about the return of the menstrual cycle. Can breastfeeding be used as a method of birth control?
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