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- Suppose 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?Which of the following is NOT an enzyme secreted into the small intestine as an aid to chemical digestion: A) Bile B) Lipase D) AmylaseThere are several processes that take place from the moment food enters our mouth until it is completely digested and used for energy. Using approximately 400-500 words, describe in detail and in order of process the mechanical (stomach and intestine)and chemical (gastric acid and enzymes) digestion of eating a grilled chicken sandwich with mayonnaise, lettuce, and tomatoes. Note what role the pancreas, gallbladder, and liver play in digestion of the ingredients? From what ingredients is your body deriving its energy and how many basic calories from the macronutrients ingested? Include at least two scholarly references (using APA formatting and style) to guide your answers (note that you can use your textbook as one of your references).
- You have just eaten a protein rich meal. Which of the following enzymes will help to digest the meal? Question options: a) cholecystokinin b) trypsin d) gastrin e) pancreatic amylase O FocusWhich of the following describes how soluble fiber in the diet may lower blood cholesterol levels? Soluble fiber binds cholesterol in the colon and carries it out of the 1) body with feces. Soluble fiber binds cholesterol in the small intestine and carries it out 2) of the body in urine. 3) Soluble fiber digests cholesterol in the colon. 4) Soluble fiber sends a signal to the liver to produce less cholesterol.You eat spaghetti with tomato sauce, peas, and Parmesan cheese. Describe the path through each organ of the digestive system this meal takes, describing how EACH of the FOUR BIOMOLECULES of the meal is digested and absorbed. Discuss all of the organs and enzymes involved.
- What happens to the products of the digestion of lipids? They are absorbed into a: O a) capillary and transported by the blood to the liver b) capillary and transported by the blood to the heart O c) lacteal and transported by the lymph to the thoracic duct O d) lacteal and transported by the blood to the liver via the hepatic portal systemWhich of the following words is missing in the following sentence: If you suck on a piece of bread, it will start to taste sweet after a while. This is because saliva contains the degrading enzyme ____________ which breaks down starch into ___________________. a) amylase; glucose b) amylase; maltos c) pepsin; maltos d) maltas; glucoseOils and proteins are digested and absorbed differently. Which organs are involved with A) both oils and proteins B) only oils and C) only proteins? BRIEFLY, what happens to oils and/or proteins at each of those organs? (DO NOT discuss ingestion or elimination.) Your answer
- Indicate whether each of the following statements is true or false. If false, correct the statement or provide a brief explanation for why it is a) The presence of lipids in the diet slows down digestion in the b) Insulin increases the rate of glucose uptake by the c) Glucagon is the hormone that signals low blood glucose d) Chylomicrons carry TAGs from the diet into the e) During fasting and starvation the liver produces ketone bodies which fuel the heart and f) The muscles can use glucose, fatty acids and ketone bodies for g) When glucose enters the cell it is immediately and reversibly h) Epinephrine stimulates breakdown of glycogen in muscles when there is an immediate need for energy by muscle i) Glucagon stimulates glycogenolysis to maintain the blood glucose j) With high [carbohydrate] levels, excess glucose (after glycogen storage has reached a maximum) is converted to fat, leading to high [malonyl-CoA]. k) Malonyl-CoA inhibits carnitine acyltransferase II , thus slowing…3 6 al What must happen first in order for dietary fats (triacylglycerols) to be digested? A) They must be made soluble in the aqueous environment. OB) They are broken down into smaller units in the saliva. OC) Each fatty acid is shortened by two-carbon units. OD) One or two fatty acids are removed from the glycerol backbone.How does the digestion and absorption of fat differ from that of carbohydrates? (Pick all that apply) A)Absorbed fat first enters the lymphatic system, whereas carbohydrates directly enter the blood. B)Fat absorption occurs in the stomach, whereas carbohydrates are absorbed from the small intestine. C)Only fat must be worked on by bacteria in the large intestine before it can be absorbed. D)Carbohydrates need to be emulsified before they can be digested, whereas fats do not. E)Processing of fat does not require any digestive enzymes, whereas the processing of carbohydrates does.