Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Textbook Question
Chapter 46, Problem 6TY
Which of the following statements regarding the vertebrate stomach is false?
- a. Its cells secrete the protease pepsin in its active form.
- b. It is a saclike organ that may have evolved to store food.
- c. Its cells secrete hydrochloric acid.
- d. It is the initial site of protein digestion.
- e. Little or no absorption of nutrients occurs there.
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One-way passage of food through the digestive system of many animal groups allowsa. intracellular digestion.b. specialization of different regions of the digestive system.c. release of digestive enzymes into the gut.d. extracellular digestion.
Which of the following is True?a. The human stomach maintains a very high pH.b. Gastric glands in the stomach wall secrete pepsinogen. c. Bile is released into the stomach from the liver.d. Many different nutrients are absorbed through the stomach.
Which of the following is FALSE?
A. Bile is a fat molecule-busting enzyme
B. Vitamins are organic compounds.
C. Most plants have a different composition of amino acids compared to animals.
D. Water reabsorption is one of the main functions of the large intestines.
Chapter 46 Solutions
Biology
Ch. 46.3 - Smooth, polished stones have been found in the...Ch. 46.3 - Prob. 1CSCh. 46.3 - Prob. 2CCCh. 46.4 - Prob. 1CSCh. 46.5 - Prob. 1CSCh. 46.6 - Prob. 1EQCh. 46.6 - CoreSKILL Did the results support the hypothesis?...Ch. 46.6 - Prob. 3EQCh. 46 - Prob. 1TYCh. 46 - Prob. 2TY
Ch. 46 - Prob. 3TYCh. 46 - Which of the following statements is true? a....Ch. 46 - Prob. 5TYCh. 46 - Which of the following statements regarding the...Ch. 46 - Prob. 7TYCh. 46 - In birds, the secretion of acid and pepsinogen...Ch. 46 - In many vertebrates, bile is produced by the...Ch. 46 - Which of the following istrueof the large...Ch. 46 - Prob. 1CQCh. 46 - Prob. 2CQCh. 46 - Core Concept: Structure and Function Describe the...Ch. 46 - Prob. 1COQCh. 46 - Define nutrient. On the basis of that definition,...
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- 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.arrow_forwardAll of the following are layers of the vertebrate gastrointestinal tract excepta. the peristalsis.b. the submucosa.c. the mucosa.d. the muscularisarrow_forwardWhich of the following statements is untrue? a. Roughage takes a long time to digest. b. Birds eat large quantities at one time so that they can fly long distances. c. Cows do not have upper teeth. d. In pseudo-ruminants, roughage is digested in the cecum.arrow_forward
- 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.arrow_forwardThe purpose of Microvilli in the human digestive tract is to: a. kill detrimental bacteria in the esophagus b. emulsify fats c. secrete pepsinogen in the stomach d. absorb nutrients from the small intestine into the bloodstream e. secrete trypsinogen and chymotrypsin into the duodenumarrow_forwardWhat is true about a gastrovascular cavity? Group of answer choices a. It has generally evolved to have as little surface area as possible b. It is usually found in conjunction with a complete digestive system c. In some species, it plays a role in the animal's movement d. It has two openings, an entrance for food and an exit for waste e. It allows for compartmentalization of digestive functionsarrow_forward
- 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.arrow_forwardWhich of the following structural characteristics of a gastrointestinal tract contributes to chemical digestion? A. The typhlosole of an earthworm B. The crop of a bird C. The chelicerae of a spider D. The radula of a mollusc E. All of the abovearrow_forwardWhat 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 preventedarrow_forward
- The small intestine is specialized for absorption because it a. is the last section of the digestive tract and retains food the longest. b. has saclike extensions along its length that collect food. c. has no outlet so food remains within it for longer periods of time. d. has an extremely large surface area that allows extended exposure to food.arrow_forwardChoose is constructing a diagram of the digestive tract of cattle. Her diagram includes a rumen, which is a pouch-like extension of the esophagus. Which addition to the diagram would be most useful to model the function of the rumen in food digestion?arrow_forwardWhich 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.arrow_forward
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Human digestive system - How it works! (Animation); Author: Thomas Schwenke;https://www.youtube.com/watch?v=X3TAROotFfM;License: Standard Youtube License