What do the enzymes pepsin, chymotrypsin, trypsin, and carboxypeptidase have in common?a. They are secreted and active within the stomach.b. They are pancreatic enzymes.c. They are secreted and active within the small intestine.d. They are enzymes that participate in protein digestion
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What do the enzymes pepsin, chymotrypsin, trypsin, and carboxypeptidase have in common?
a. They are secreted and active within the stomach.
b. They are pancreatic enzymes.
c. They are secreted and active within the small intestine.
d. They are enzymes that participate in protein digestion
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- Which of the following statements regarding protein digestion is incorrect? A. The intestinal enzymes trypsin and chymotrypsin continue the chemical breakdown of polypeptides into oligopeptides. B. Chemical digestion of proteins is initiated in the stomach through the action of the enzyme pepsin. C. Mechanical digestion of proteins starts in the mouth through chewing. D. Di- and tripeptides enter the intestinal cells where they are broken down by peptidases into individual amino acids.What would be the consequence of eliminating the function of parietal cells in the walls of the stomach? Select one: a. Protein digestion in the small intestine would be eliminated b. Pepsinogen secretion would be eliminated c. It would decrease bile production d. It would eliminate fat digestion in the stomach e. Protein digestion in the stomach would be preventedWhich of the following is true about carbohydrate digestion? A. Cellulose and lignin found in plants are totally indigestible even with intestinal bacteria. B. The acidity of the stomach prevents chemical digestion of carbohydrates. C. Dextrin and maltose are the products of chemical digestion of starch by pancreatic amylase. D. Disaccharidases produced from the pancreas breaks down oligosaccharides in the intestines.
- What is the function of bile in digestion? a. It serves as biological detergent that enable the body to excrete cholesterol and potentially toxic compounds. b. It emulsifies and absorbs dietary lipids in the small intestine. c.It helps to build and maintain the health of soft and hard tissues. d. It ingested fat and fat-soluble vitamins, facilitating their digestion and absorption. Antidiuretic hormone is a part of the negative feedback system that regulates water in the body. Erythropoietin increases the permeability of the distal tubule allowing greater water recovery. A. First statement is correct, second statement is incorrect. B. First statement is incorrect, second statement is correct. C. Both statements are correct. D. Both statements are incorrect. Which of the following is the proper sequence of structures in the nephron? I - Proximal Convoluted Tubule II - Distal Convoluted Tubule III - Glomerulus IV -…It is occasionally necessary for a person to have their gallbladder surgically removed. How will such a person's digestive process be altered? A. Pepsinogen would not be converted into pepsin before entering the lumen of the stomach. B. The person would be unable to digest fats. C. Mucus would not protect the stomach lining. D. Water would not be extracted from forming feces. E. Bile would go directly from the liver to the duodenum.Which two hormones promote the release of bile and pancreatic juice into the small intestine? A. Secretin and cholesytokinin (CCK) B. Gastric inhibitory peptide (GIP) and histamine C. Somatostatin and secretin D. Gastrin and histamine Which of the following statements about starch digestion is FALSE? A. It begins in the mouth. B. It occurs in the stomach. C. It requires the action of pancreatic amylase D. It requires brush border enzymes for completion. . Which of the following statements about contraction of intestinal smooth muscle is TRUE? A. It occurs automatically. It is increased by parasympathetic nerve stimulation C. It produces segmentation D. All of the above are TRUE В.
- What are the function of lipoproteins? Select one: a. They help transport fatty acids in aqueous blood plasma b. They are considered a type of "bad" cholesterol c. They assist the rumen microflora to ferment fatty acids d. They help to emulsify fat in the small intestineHow is digestion regulated?a. Digestion is regulated by the autonomic nervous system.b. Digestion is slowed by the parasympathetic nervous system.c. Digestion is increased by the sympathetic nervous system.d. Digestion is stimulated by the parasympathetic fibers of the vagus nerve.e. Sympathetic neurons cause blood to be diverted from digestive organs.which of the following is true of bile? a. needed in the small intestine for the digestion of fats b. needed in the small intestine for the emulsification of fats c. synthesized by the gall bladder d. it converts inactive pancreatic enzymes to an active form
- Figure 16.7 Which of the following statements about the digestive system is false?a. Chyme is a mixture of food and digestive juices that is produced in the stomach.b. Food enters the large intestine before the small intestine.c. In the small intestine, chyme mixes with bile, which emulsifies fats.d. The stomach is separated from the small intestine by the pyloric sphincter.Where does most of the digestive process take place? A. Small intestine B. Large intestine C. Stomach D. All of the aboveHow is the digestion of fats different from that of proteins and carbohydrates? a. Fat digestion occurs in the small intestine, and the digestion of proteins and carbohydrates occurs in the stomach. b. Fats are absorbed into cells as fatty acids and monoglycerides but are then modified for absorption; amino acids and glucose are not modified further. c. Fats enter the hepatic portal circulation, but digested proteins and carbohydrates enter the lymphatic system. d. Digested fats are absorbed in the large intestine, and digested proteins and carbohydrates are absorbed in the small intestine.