Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305073951
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 39, Problem 2SQ
Summary Introduction
Introduction: Pepsin is one of the major digestive enzymes that is produced in the stomach of many animals including humans. The gastric gland present in the stomach secretes hydrochloric acid that activates the pepsinogen into pepsin. The acidic environment in the stomach denatures the proteins and exposes the bonds between them. These bonds are cleaved by the pepsin into smaller fragments known as peptides.
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After _____ are absorbed by intestine cells, they go into lymph vessels rather than blood.
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B. carbohydrates
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Most digestion and absorption occurs in the ___ because of ____.
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c. small intestine, villi
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Monosaccharides and amino acids absorbed from the small intestine enter____ . a. blood vessels c. fat droplets b. lymph vessels d. bile
Chapter 39 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 39 - Prob. 1SQCh. 39 - Prob. 2SQCh. 39 - Prob. 3SQCh. 39 - A bird's keratin-lined _______ helps it grind up...Ch. 39 - Monosaccharides and amino acids absorbed from the...Ch. 39 - Human Adaptation to a Starchy Diet The human AMY-1...Ch. 39 - Prob. 2DAACh. 39 - Prob. 3DAACh. 39 - Prob. 6SQCh. 39 - The low pH of the _______ aids in protein...
Ch. 39 - Prob. 8SQCh. 39 - Prob. 9SQCh. 39 - Eating a healthy diet entirely of plant foods...Ch. 39 - Prob. 11SQCh. 39 - _______ is (are) a good source of omega-3 fatty...Ch. 39 - Prob. 13SQCh. 39 - Match each substance with its description. __...Ch. 39 - Match each organ with its digestive function in...Ch. 39 - Some people who have gallstones experience pain...Ch. 39 - A python can survive by eating a large meal once...Ch. 39 - Although rabbits cannot break cellulose down into...
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- Cholecystokinin stimulates secretion of ____________. a. pepsin b. tripeptides c. NaHCO3 d. bile salts e. acidsarrow_forwardThe serous membrane that covers the intestines is called _____. Select one: a. visceral pleura b. visceral peritoneum c. parietal peritoneum d. parietal pericariumarrow_forwardWhich is not an accessory organ for digestion a. Liver b. Stomach c. Gall bladder d. Pancreasarrow_forward
- What component of the digestive tract can you not live without because almost all absorption of nutrients occurs here? a. small intestine b. large intestine c. stomach d. gallbladderarrow_forwardchoice, Chyme arriving in the small intestine would stimulate the beginning of the _________________ phase of stomach activity: A. gastric B. intestinal C. cephalic D. buccalarrow_forward1. Where does physical digestion begin? a.stomach b.small intestine c.mouth d.large intestine 2. Lack of insulin characterizes _______. a. type 1 diabetes b. gestational diabetes c. type 2 diabetes d. hypoglycemiaarrow_forward
- Chemical digestion does not involve… A. stomach acid B. peristalsis C. enzymes D. the salivary glands secreting salivaarrow_forwardMost enzymes involved with digestion are _____ A. Hydrolases B. Mutases C. Phosphateses D. Kinasesarrow_forwardThe Primary site of digestion and absorption of carbohydrate. a. Mouth b. Stomach c. Small intestines d. Epiglottisarrow_forward
- Proteins are digested to _______________ beginning in the _______________. a. amino acids; stomach b. fatty acids; duodendum c. fatty acids; stomach d. amino acids; duodendumarrow_forward______ is a chemical messenger secreted by fat cells that acts as an appetite suppressant. Choose one answer. a. Orexin b. Leptin c. Ghrelin d. Angiotensinarrow_forwardThis process ensures that all contents of the small intestine come in contact with villi. A. Propulsion B. Peristalsis C. Segmentation D. Digestionarrow_forward
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