Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 47, Problem 10TYK
Summary Introduction
Introduction:
Based on the mode of survival, the basic vertebrate
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The 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 duodenum
Which 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.
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.
Chapter 47 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 47.1 - Prob. 1SBCh. 47.1 - Prob. 2SBCh. 47.1 - What is the difference between deposit feeders and...Ch. 47.2 - Prob. 1SBCh. 47.2 - Prob. 2SBCh. 47.3 - Prob. 1SBCh. 47.3 - Prob. 2SBCh. 47.3 - Prob. 3SBCh. 47.3 - Prob. 4SBCh. 47.4 - Prob. 1SB
Ch. 47.4 - Prob. 2SBCh. 47.5 - How are the different types of teeth used in...Ch. 47.5 - What roles do symbiotic microorganisms play in...Ch. 47 - Prob. 1TYKCh. 47 - Prob. 2TYKCh. 47 - The order of successive steps in digestion is: a....Ch. 47 - Prob. 4TYKCh. 47 - Prob. 5TYKCh. 47 - Prob. 6TYKCh. 47 - If the fat in whole milk is ingested: a. the...Ch. 47 - The role of the liver in digestion is to: a....Ch. 47 - Prob. 9TYKCh. 47 - Prob. 10TYKCh. 47 - Prob. 11TYKCh. 47 - Prob. 12TYKCh. 47 - Prob. 13TYKCh. 47 - Prob. 14TYKCh. 47 - Apply Evolutionary Thinking What is the advantage...Ch. 47 - The human AMY-1 gene encodes salivary amylase, an...Ch. 47 - Prob. 2ITDCh. 47 - Prob. 3ITD
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- A. What is/are the primary role(s) of the large intestine? a. to complete enzymatic digestion and store indigestible material b. to initiate enzymatic digestion of carbohydrates and to store water c. to absorb water from digested material, with essentially no digestive role of its own d. to secrete water into the material that is left over after all available nutrients have been absorbed e. to digest fats A. In the intestine most nutrients are absorbed regardless of whether the body has an immediate need or shortfall of them; ie there is little control over amounts taken up – which of the following does not follow this rule? a. absorption of sodium b. absorption of water c.absorption of iron d. absorption of fat soluble vitamins e. none of the above follow this rule – close control is exerted over all of themarrow_forwardWhich of the following is true about pepsin? a. Most pepsin is released directly from chief cells.b. Pepsin is most active at high pH.c. Pepsin is essential for protein digestion.d. Pepsin accelerates protein digestion.e. Pepsin accelerates fat digestion.arrow_forwardWhich of the following is true regarding digestion? A. The first segment of the alimentary tract is the duodenum. B. Amylase hydrolyzes starches into simple sugars. C. Bile hydrolyzes amylase into simple sugars. D. Trypsin and chymotrypsin degrade lipids into free fatty acids. E. All of the above answer choices correctly answer the question.arrow_forward
- Which of the following enzymes that helps to break proteins is more likely active in the small intestine a. pepsin chemotrypsin b OC d b. trypsin d. carboxypeptidase C. e. (b, c, d)arrow_forwardWhich of the following is true about segmentation in the small intestine?a. It is a type of peristalsis.b. It moves chyme only from the duodenum to the ileum.c. Its frequency is the same in each intestinal segment.d. It is unaffected by cephalic phase stimuli.e. It produces a slow migration of chyme to the large intestine.arrow_forwardIt 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_forward
- Which of the following would you predict to be the consequence of Vitamin B12 deficiency in ruminant animals? Select one: a. Inability to metabolize volatile fatty acids for oxidation in Krebs Cycle b. Inability to absorb digested carbohydrates in the rumen c. Inability of rumen microflora to enzymatically cleave bonds between sugars in cellulose d. Inability to convert glucose to pyruvic acidarrow_forwardWhich of the following is NOT true about whey protein? A. It is derived from milk. B. It contains all nine essential amino acids. C. It is a slow-digesting protein. D. It can help increase muscle protein synthesis.arrow_forwardWhich of the following statement is correct? a. disaccharides, glucose is the main source of energy for mammals b. hunger pangs are initiated by low high-density lipoprotein in the blood c. duodenum is the smallest part of the small intestine and is the main site for absorption d. it takes 4-6 hours for the bolus to be transported in the anal canalarrow_forward
- The stomach is extremely acidic, allowing it to perform several interesting feats. Which of the following is NOT one of the consequences of this acidic environment?arrow_forwardWhich 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.arrow_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
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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