Biology: The Unity and Diversity of Life (MindTap Course List)
15th Edition
ISBN: 9781337408332
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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The low pH of the_______ aids in protein digestion. a. stomach c. large intestine b. small intestine d. esophagus
Most digestion and absorption occurs in the ___ because of ____.
a. mouth, teeth
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Chapter 39 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 39 - Human Adaptation to a Starchy Diet The human AMY-1...Ch. 39 - Human Adaptation to a Starchy Diet The human AMY-1...Ch. 39 - Human Adaptation to a Starchy Diet The human AMY-1...Ch. 39 - Prob. 1SQCh. 39 - Prob. 2SQCh. 39 - Prob. 3SQCh. 39 - A bird's keratin-lined _______ helps it grind up...Ch. 39 - Prob. 5SQCh. 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 - Prob. 12SQCh. 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...Ch. 39 - Cholera is a disease caused by bacteria that make...
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- Cholecystokinin stimulates secretion of ____________. a. pepsin b. tripeptides c. NaHCO3 d. bile salts e. acidsarrow_forwardMonosaccharides and amino acids absorbed from the small intestine enter____ . a. blood vessels c. fat droplets b. lymph vessels d. bilearrow_forwardThe serous membrane that covers the intestines is called _____. Select one: a. visceral pleura b. visceral peritoneum c. parietal peritoneum d. parietal pericariumarrow_forward
- Which is not an accessory organ for digestion a. Liver b. Stomach c. Gall bladder d. Pancreasarrow_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_forwardWhat 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_forward
- Chemical digestion does not involve… A. stomach acid B. peristalsis C. enzymes D. the salivary glands secreting salivaarrow_forwardThe Primary site of digestion and absorption of carbohydrate. a. Mouth b. Stomach c. Small intestines d. Epiglottisarrow_forwardProteins 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_forwardWhich area in the digestive system does not have mucosa associated lymphatic tissue a. Pharynx b. Distal small intestine c. Teeth d. Tonsilsarrow_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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