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- Which of the following statements is correct? 160 山L 140 KEY 120 Na+ 100 K* 80 CI 60 HCO, 40 Proteins 흐 20 Compartment A Compartment B Compartment B represents the cytosolic fluid Compartment A represents the blood plasma Compartment A represents the intracellular fluid Compartment B represents the extravascular water lon concentration (mmol/L)An amino acid mixture consisting of phenylalanine, glycine, and glutamic acid is to be separated by HPLC. The stationary phase is aqueous and the mobile phase is a solvent less polar than water. Which of these amino acids will move the fastest? Which one will move the slowest?for the following scenario, DRAW the situation depicted, INDICATE which solution is hypertonic, hypotonic or isotonic (if applicable), and then show with ARROWS which way water will move. then write your response in complete sentences, thoroughly explaining and justifying your arrows. a. ouch! sore throat! it is so swollen that it is sore and it is difficult to swallow. and you have an oral presentation today. better gargle with salt water to reduce the swelling! explain why this age old technique really works, by using the concept of osmosis
- location are corn Question 74 In active transport solute mo O TrueThe cell membranes of mammalian red blood cells are permeableto urea. If red blood cells are dropped into a solution of urea thatis identical in osmotic pressure (isosmotic) to the cytoplasm ofthe cells, although the cells do not swell and burst as quickly aswhen they are dropped simply into pure water, they eventuallyswell and burst. Explain. Also discuss how you would designa solution into which red cells could be placed without everswelling. (Hint: Think about whether urea will stay on theoutside of the cells and the implications for osmotic pressures.)The average time it takes for a molecule to diffuse adistance of x cm is given byt = x2/2D where t is the time in seconds and D is the diffusioncoefficient. Given that the diffusion coefficient ofglucose is 5.7 × 10−7cm2/s, calculate the time it wouldtake for a glucose molecule to diffuse 10 μm, which isroughly the size of a cell.
- Nitric oxide (NO) is a gaseous molecule with lipid solubility similar to that of O2 and CO2. Endothelial cells lining arteries use NO to signal surrounding smooth muscle cells to relax, thereby increasing blood flow. What mechanism or mechanisms would transport NO from where it is produced in the cytoplasm of an endothelial cell into the cytoplasm of a smooth muscle cell, where it acts?For the following scenario you must draw the situation depicted, indicate which solution is hypertonic, hypotonic or isotonic (as applicable), and then show with arrows which way water will move. Then you must write your response in complete sentences, thoroughly explaining and justifying your arrows. a. Ouch! Sore throat! It is so swollen that it is sore and it is difficult to swallow. And you have an oral presentation today. Better gargle with salt water to reduce the swelling! Explain why this age old technique really works, by using the concept of osmosis.Mannitol, a carbohydrate, is supplied as a 25% (w/v) solution. This hypertonic solution is given to patients who have sustained a head injury with associated brain swelling. (a) What volume should be given to provide a dose of 70. g? (b) How does the hypertonic mannitol benefi t brain swelling?
- ABOUT TRANSPORT MECHANISMNO NEED TO EXPLAIN EACH ITEMS *YOU MUST ANSWER (1)-(27) *JUST FILL IN THE BLANKS THANK YOU IN ADVANCE.Do cell maintain osomsis balance by being in the state of isontonic ?In the stomach, parietal cells are responsible for the formation of the gastric juice. During acid secretion, the pH in the stomach is estimated to be pH = 2, whereas parietal cells maintain an intracellular pH =7.35. The transmembrane potential of parietal cells is typically -70 mV. Body temperature 37°C. 1) Calculate the proton gradient concentration across the parietal membrane 2) Calculate the free energy change associated with the secretion of 1 mole of H* 3) Do you think that Ht transport can be driven by ATP hydrolysis at the ratio of one molecule of ATP per H* transported? You can use your textbook or other sources to check AG for ATP hydrolysis 4) If H* where free to move back to into the cell, calculate the membrane potential that would be required to prevent them to do so