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Model 1 - Two Digestive Enzymes lipase Triglycerides glycerol + fatty acids pepsin Large polypeptides smaller...
Each day, the pancreas produces up to 1.5 L of pancreatic juices that enter the duodenum...
Each day, the pancreas produces up to 1.5 L of pancreatic juices that enter the duodenum via the pancreatic duct. The pancreatic juices consist of water, salts, bicarbonate ions, and digestive enzymes. Bicarbonate ion raises the pH of the acidic chyme from the stomach, stopping the active ity of pepsin and allowing the pancreatic and intestinal enzymes to function. The various pancre. atic enzymes and their substrates are listed in Table 10.2. Table 10.2 Various enzymes produced by the pancreas...
Isoelectric Point of Pepsin Pepsin is the name given to several digestive enzymes secreted (as larger...
Isoelectric Point of Pepsin Pepsin is the name given to several digestive enzymes secreted (as larger precursor proteins) by glands that line the stomach. These glands also secrete hydrochloric acid, which dissolves the particulate matter in food, allowing pepsin to enzymatically cleave individual protein molecules. The resulting mixture of food, HCl, and digestive enzymes is known as chyme and has a pH near 1.5. What pI would you predict for the pepsin proteins? What functional groups must be present to...
Pepsin is the name given to a mix of several digestive enzymes secreted by gland that...
Pepsin is the name given to a mix of several digestive enzymes secreted by gland that line the stomach. These glands also secrete HCl, which dissolves the particulate matter in food, allowing pepsin to enzymatically cleave individual protein molecules. The resulting mixture of food, Hal, and digestive enzymes is known as chyme and has a pH near 1.5. What pI would you predict for the pepsin proteins? What functional groups must be present to confer the pI on pepsin? Which...
Using the list of words below, place the correct term in the blank provided. lipoprotein water...
Using the list of words below, place the correct term in the blank provided. lipoprotein water fructose amino acid pool amylase vitamins/minerals triglyceride gall bladder carbohydrate small intestine free fatty acid stomach glucose galactose Glut large intestine 1.Digestion of this nutrient begins in the mouth 2.Mechanical churning of food occurs in this pouch-like portion of the digestive tract 3.Most absorption of nutrients takes place here 4.This sac-like structure secretes bile to aid in fat digestion 5.Specialized membrane glucose carrier proteins...
8. Enzymes often exhibit pH-dependent activity due to protonation/deprotonation of key amino acids. A general schematic...
8. Enzymes often exhibit pH-dependent activity due to protonation/deprotonation of key amino acids. A general schematic is shown in i) for a pH-dependent enzyme, in which the "active" pathway requires EH and ESH. The constants ka, kz, kcat are the usual rate constants for the Michaelis-Menten reaction scheme, and the dissociation constants KEI, KESI, KE2, Kesz are defined as shown in ii). a. Derive a M-M rate equation for the pH-dependent scheme, below. To do so: 1) express total enzyme...
6. Choose the correct answer: 1. In non-oxidative deamination, amino acid is converted into........ a hydrochloric...
6. Choose the correct answer: 1. In non-oxidative deamination, amino acid is converted into........ a hydrochloric acid b. Pyruvate C. carboxylic acid 2. Process of breakdown of amino acids to a keto acids is called... a. Amination b. transamination c. deamination 3. Function of proteins is to ........ A. catalyze biochemical reactions. c. synthesis of nucleoproteins. b. regulates reactions d. all of above. 4.Transamination is catalyzed by.......... a. hydrogenases. b. glutamate transaminase. c.dehydrogenases. 5. the source of amino acid pool...
Foundations of Biological Sciences 1 Enzymes - 8 PART 4: THE EFFECT OF PH ON ENZYME...
Foundations of Biological Sciences 1 Enzymes - 8 PART 4: THE EFFECT OF PH ON ENZYME ACTIVITY The pll scale measures the amount Another factor influencing the rate of enzyme catalysis is the pll of the of ons in a solution. The more solution. pH specifies the acidity or basicity of solution by measuring the the more acidic the solution and lower hydrogen ion consentation (H). Like temperature, pH affects the three- pH) dimensional shape of enzymes, thus regulating their...
2. hypothesize the best conditions (pH and temperature) under which the enzyme chymotrypsin functions with an...
2. hypothesize the best conditions (pH and temperature) under
which the enzyme chymotrypsin functions with an appropriate
reference. also, hypothesize what will occur in the presence of an
inhibitor and the type of inhibition.
EXPERIMENT 5: ENZYME ACTIVITY WITH a-CHYMOTRYPSIN Prelab Assignment 1. Prepare a flow chart, covering one half of the experimental work (either part A and C if your lab bench is on the window side of the lab or part B and D if your locker is...
please number answers 1. Which is the basic ring system of the steroids? 0000 "acto 12....
please number answers
1. Which is the basic ring system of the steroids? 0000 "acto 12. The catalytic hydrogenation of vegetable oils will produce (1) fatty acids. (3) fats. (2) fatty acids and (4) waxes. glycerol. 13. The melting point of an unsaturated glyceryl ester compared to that of its saturated hydrogenation product is usually (1) Tower. (3) the same. (2) higher. (4) unpredictable. 14. Which best represents the amino acid glycine at its isoelectric point? (1) HyNCH2COOH (2) H3TNCH,COOH...
1. Which of the following is not considered a nutrient a Vitamin B. Water c.Carbohydrate (d)...
1. Which of the following is not considered a nutrient a Vitamin B. Water c.Carbohydrate (d) Alcohol e Mineral 2. For which of the following causes of death does a person's diet play a part? a. Lung disease (6) Cancer Chronic lower respiratory diseases d. Infections of the blood e AIDS 3. Researchers repeatedly report that people who consume a variety of foods such as fruits, vegetables, legumes, nuts, and whole grains have reduced risks of which of the following...
Each day, the pancreas produces up to 1.5 L of pancreatic juices that enter the duodenum via the pancreatic duct. The pancreatic juices consist of water, salts, bicarbonate ions, and digestive enzymes. Bicarbonate ion raises the pH of the acidic chyme from the stomach, stopping the active ity of pepsin and allowing the pancreatic and intestinal enzymes to function. The various pancre. atic enzymes and their substrates are listed in Table 10.2. Table 10.2 Various enzymes produced by the pancreas...
Using the list of words below, place the correct term in the blank provided. lipoprotein water fructose amino acid pool amylase vitamins/minerals triglyceride gall bladder carbohydrate small intestine free fatty acid stomach glucose galactose Glut large intestine 1.Digestion of this nutrient begins in the mouth 2.Mechanical churning of food occurs in this pouch-like portion of the digestive tract 3.Most absorption of nutrients takes place here 4.This sac-like structure secretes bile to aid in fat digestion 5.Specialized membrane glucose carrier proteins...
8. Enzymes often exhibit pH-dependent activity due to protonation/deprotonation of key amino acids. A general schematic is shown in i) for a pH-dependent enzyme, in which the "active" pathway requires EH and ESH. The constants ka, kz, kcat are the usual rate constants for the Michaelis-Menten reaction scheme, and the dissociation constants KEI, KESI, KE2, Kesz are defined as shown in ii). a. Derive a M-M rate equation for the pH-dependent scheme, below. To do so: 1) express total enzyme...
6. Choose the correct answer: 1. In non-oxidative deamination, amino acid is converted into........ a hydrochloric acid b. Pyruvate C. carboxylic acid 2. Process of breakdown of amino acids to a keto acids is called... a. Amination b. transamination c. deamination 3. Function of proteins is to ........ A. catalyze biochemical reactions. c. synthesis of nucleoproteins. b. regulates reactions d. all of above. 4.Transamination is catalyzed by.......... a. hydrogenases. b. glutamate transaminase. c.dehydrogenases. 5. the source of amino acid pool...
Foundations of Biological Sciences 1 Enzymes - 8 PART 4: THE EFFECT OF PH ON ENZYME ACTIVITY The pll scale measures the amount Another factor influencing the rate of enzyme catalysis is the pll of the of ons in a solution. The more solution. pH specifies the acidity or basicity of solution by measuring the the more acidic the solution and lower hydrogen ion consentation (H). Like temperature, pH affects the three- pH) dimensional shape of enzymes, thus regulating their...
2. hypothesize the best conditions (pH and temperature) under
which the enzyme chymotrypsin functions with an appropriate
reference. also, hypothesize what will occur in the presence of an
inhibitor and the type of inhibition.
EXPERIMENT 5: ENZYME ACTIVITY WITH a-CHYMOTRYPSIN Prelab Assignment 1. Prepare a flow chart, covering one half of the experimental work (either part A and C if your lab bench is on the window side of the lab or part B and D if your locker is...
please number answers
1. Which is the basic ring system of the steroids? 0000 "acto 12. The catalytic hydrogenation of vegetable oils will produce (1) fatty acids. (3) fats. (2) fatty acids and (4) waxes. glycerol. 13. The melting point of an unsaturated glyceryl ester compared to that of its saturated hydrogenation product is usually (1) Tower. (3) the same. (2) higher. (4) unpredictable. 14. Which best represents the amino acid glycine at its isoelectric point? (1) HyNCH2COOH (2) H3TNCH,COOH...
1. Which of the following is not considered a nutrient a Vitamin B. Water c.Carbohydrate (d) Alcohol e Mineral 2. For which of the following causes of death does a person's diet play a part? a. Lung disease (6) Cancer Chronic lower respiratory diseases d. Infections of the blood e AIDS 3. Researchers repeatedly report that people who consume a variety of foods such as fruits, vegetables, legumes, nuts, and whole grains have reduced risks of which of the following...
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