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1. The structure of biological membranes is determined primarily by the lipid bilayer but the specific functions of these membranes are carried out by proteins associated with the membrane. State whether you believe this statement is true or false and explain your answer?
2. You are working on a farm and come across a worker who has been exposed to high levels of an insecticide containing an organophosphate. Organophosphates are known to interfere with acetylcholinesterase activity. Acetylcholinesterase is an enzyme that degrades acetylcholine in the neuromuscular junction. What will happen to the muscles that are affected by the organophosphate and explain why this happens?
3. While on a camping trip you and a friend run into a bear. Your friend begins to hyperventilate. You give him a paper bag and tell him to breath into it. Why does breathing into a paper bag help your friend return to normal and what would be the physiological changes in his body if they did not receive the first aid treatment?
4. The body’s oxidation of glucose is commonly described as the burning of fuel. Is this analogy correct? Why or why not?
5. A 30 year old male patient with emphazema goes to the hospital and is prescribed a urinalysis. When the urinalysis test results are returned the patient’s urine has a low pH. How could the patient’s emphazema cause this test result?
6. You grow a human cell line in an isotonic solution and you look at it under a microscope and notice that it looks relatively round and normal. You then transfer the cell into a solution containing a high amount of salt. You then look under the microscope again and notice that the shape of the cell has changed. What shape do you see under the microscope and why has the cell changed to this shape.
When William was helping victims following a devastating earthquake in a region that was not prepared to swiftly set up adequate temporary shelter,
explain the energetic of catalysis in simplest terms.
Flask A includes yeast cells in glucose-minimal salts broth incubated at 30C with aeration. Flask B contains yeast cells in a glucose-minimal salt broth incubated at 30C in an anaerobic jar.
The idea is that this arrangement will allow animals and plants to migrate between refuges. Why will such migration be important. Which of the compounds that normally protects the liver and other vital organs.
Consider a transmembrane protein complex that forms a hydrophilic pore across the plasma membrane of a eukaryotic cell. The pore is made of five similar protein subunits, each of which contributes a membrane-spanning alpha-helix to form the pore.
as calcium and magnesium salts of fatty acids are insoluble in water, how would you expect this to affect the usefulness of soap in hard water.Why would these results happen the way they did.
Male frogs give calls that attract female frogs to approach and mate. Researchers examined mating calls of closely related tree frogs in South America. What outcomes be able to occur where the ranges of two species overlap.
A clinical microbiologist makes serial dilutions of several antimicrobials in broth, and then incubates each drug dilution series with a standard amount of a patient's isolated pathogen. What is this micro biologist setting up.
State the rate of growth of population of bacteria? State the initial population at time t = 0 hours?
Explain the probability that the first child of parents who are heterozygous for both traits will show the achondroplasia however not the Huntington's disorder?
A new enzyme you are studying has a Km of 7.0mM and a kcat of 126 per second. What will be the initial rate of reaction in units mM/min when 9.3 nanometer enzyme is reacted with 2.7 mM substrate. Report your answer in units if mM/min to nearest 1m..
What makes the principle scientifically useful or a positive thing for science? What makes a principle not methodically useful, or even a negative thing for science.
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