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Sc 121 Unit 4 Assignment Smtp

Unformatted text preview: Kaplan University School of General Education SC121 Unit 4 Assignment Unit 4 Assignment Blood Glucose and Enzyme Activity Labs This Assignment will cover two PowerPhys labs: Blood Glucose Regulation and Enzyme Activity. For each lab, go to PowerPhys in WileyPLUS by clicking on “Read, Study & Practice” located under course home, and read Objectives and Review, Prelab Quiz, and Pre-lab Reporting. After you finish the assigned Reading you will be able to answer the questions pertaining to each lab. Be sure to carefully read the synopsis of each experiment before completing this worksheet. List your answers on a separate Word document and submit it to the Dropbox. Please number your responses clearly and keep your answers brief. Each question is worth 2 points. Blood Glucose Regulation Answer the following 5 questions based on the pre-lab readings: 1. Ketones are formed by the breakdown of which substances? -fatty acids 2. Hyperglycemia stimulates the secretion of which substance from the pancreas? -insulin 3. Hypoglycemia stimulates the secretion of which substance from the pancreas? -glucagon and cortisol 4. What type of assay was used to measure plasma glucose and ketone levels? -enzymatic analysis 5. What type of assay was used to measure plasma insulin and glucagon levels? -radioimmunoassay Using the above graph, answer the following two questions: Kaplan University School of General Education SC121 Unit 4 Assignment 6. When was the blood glucose concentration the highest? -Immediately post meal through 1 hr post meal 7. Why was blood glucose concentration the highest at this time? -Because after consuming a meal with carbohydates, the ingested carbohydrates are digested and absorbed into the blood as glucose. Using the above graph, answer the following four questions: 8. When was insulin concentration at its highest? -1hr post meal 9. What effect will the high concentration of insulin have on the blood glucose levels? -It will increase the transport of glucose into body cells causing blood glucose levels to decrease. 10. When was the glucagon concentration at its highest? -3 hours post meal 11. How does glucagon affect blood glucose levels? -It stimulates an increase in blood concentration of glucose Enzyme Activity Answer the following three questions based on the pre-lab readings: fructose glucose 12. Sucrase splits sucrose into _________ and __________. 13. Sucrase is found in which part of the GI tract? -glucose molecules 14. Regarding the effect of temperature on enzyme activity, what was the independent variable? -Temperature Kaplan University School of General Education SC121 Unit 4 Assignment Using the above graph, answer the following two questions: 15. State the optimum pH for sucrase activity. -6 16. What happens to the activity of sucrase as the pH becomes more alkaline? -It decreases in activity As seen on the graph above, optimum sucrase activity occurs around 40o C (104o F). Activity of sucrase decreases as the temperature decreases below 40o C or increases above 40o C. Using the above graph, answer the following two questions: Kaplan University School of General Education SC121 Unit 4 Assignment 17. Compare optimal temperature for sucrase activity to body temperature. - The sucrose activity is more active when its closer to the body's temperature. Kaplan University School of General Education SC121 Unit 4 Assignment 18. How would a slight fever affect sucrase activity? -it would increase sucrose activity 19. Referring to the table above, specifically state where in the intestine sucrase is likely most active. -in the duodenum 20. Salivary amylase, an enzyme in saliva that breaks down starch, has an optimal pH of 6.77.0. Explain why salivary amylase is active in the mouth, but becomes inactive in the stomach. -Salivary amylase is inactivated by gastric acid that is found in the stomach. ...
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Unformatted text preview: 11. Glucagon cause blood levels to increase. 12. Sucrase splits sucrose into fructose and glucose. 13. Sucrase can be found in the small intestine. Sucrase is used to aide in the digestion of sugars. 14. The independent variable was the ph level. 15. The optimum ph on the graph was 6 ph. 16. The activity of sucrase would decrease when alkaline increases. 17. The lower the body temperature the more active sucrase is. The higher the body temperature is the less active sucrase is. 18. A slight fever would decrease the activity of sucrase. 19. Sucrase would be more active in the duodenum, which is the first section of the small intestine. 20. Salivary amysle is more active in the mouth to help starch turn into glucose. Salivary amysle’s activity decreases in the stomach, because the stomach has a higher acid content than the mouth. UNIT 4 ASSIGNMENT 3 Reference Totora ,J.G., L.L.C. ,Derrickson, B., Wiley, J.& Sons.(2014). Principles of Anatomy and Physiology Danvers, MA...
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