he enzyme pepsin, which breaks down proteins in your stomach, functions optimally in your stomach. Draw a simple graph which roughly shows thepH vs reaction rateofpepsinactivity.
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he enzyme pepsin, which breaks down proteins in your stomach, functions optimally in your stomach. Draw a simple graph which roughly shows thepH vs reaction rateofpepsinactivity.
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- You have the task of producing 3 kilogram of porcine (pig) insulin from pig pancreases to create an emergency stockpile of insulin. You know that a typical adult pig has a 269 gram pancreas and it is possible to produce 15 micromoles of purified insulin from 1 kg of pancreatic tissue. How many fresh pig carcasses would you need to produce 3 kg of insulin?Briefly discuss the effect of salt, pH and temperature on the action of salivary amylase. Then, list TWO possible errors in this experiment. Suggest how these errors could be prevented.Suppose you are measuring the metabolic rate of a young,growing cow by using the material-balance method. Whatprocedures could you use to take account of the cow’s growth, sothat you measure a correct metabolic rate?
- After a meal that contains carbohydrates, blood glucose levels usually rise gradually as carbohydrates are digested and the resulting monosaccharides are absorbed into the bloodstream. Suppose you run a test on a human with no lactase production. You would provide a dose (e.g., 25 grams) of lactose and measure changes in blood glucose levels over the next three hours. Predict how blood glucose levels would change from fasting to three hours. Justify your response using the results from the above simulation.The activity of pepsin was measured at various pH values. When the temperature and the concentrations of pepsin and substrate were held constant, the following activities were obtained: pH Activity 1.0 0.5 1.5 2.6 2.0 4.8 3.0 2.0 4.0 0.4 5.0 0.0 Predict the activity of pepsin in the blood at pH 7.4.Which products of fat hydrolysis would cause a change in pH of the whole milk sample? Why does a person with a low production of stomach HCl have difficulty with protein digestion? Write the equation for the action of Pancreatin (lipase) on a molecule of Tristearin.
- Answer the following using the picture attached: A. How does pepsin differ from chymotrypsin in terms of its active site residues and mechanism? B. How do these changes permit pepsin to operate at such a low pH?The total of ATP molecules that are produced during complete breakdown of two molecule glucose in a liver cell isSuppose you have a test tube containing olive oil and pancreatic lipase in a pH 7.0 buffer incubating at 37°C for 1 hour. a) Identify two different observations or measurements you can make in order to determine whether digestion of the oil occurred. b) Do you think digestion occurs under these conditions? What could have made digestion more efficient?
- Predict physiological consequences of a constitutively active glucose uniporter in the intestines .If a mutation in a sodium channel in an Intestinal epithelial cell caused a marked decrease In the concentration gradient of sodium across the plasma membrane, which of the following would you expect to observe? a decrease in Na/K ATPase activity. an increase in the movement of glucose across the basolateral membrane to the extracellular space an increase in sodium/glucose co-transport into the cell across the apical membrane a decrease in cytoplasmic glucose concentrationIf the blood glucose test was performed on people from the Maasai population in Kenya, would their results be lactase persistent or nonpersistent. Explain your prediction. The Maasai raise cows for food.