Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 41, Problem 7TYK
Why does salivary amylase not hydrolyze starch in the duodenum?
- a. Starch is completely hydrolyzed into maltose in the oral cavity.
- b. The acid pH of the stomach denatures salivary amylase, and pepsin begins hydrolyzing it.
- c. Salivary amylase is produced by salivary glands and never leaves the oral cavity.
- d. Pancreatic amylase is a more effective enzyme in the pH of the duodenum.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
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.
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
Chapter 41 Solutions
Study Guide for Campbell Biology
Ch. 41 - How can vegetarians obtain all the essential amino...Ch. 41 - Prob. 2IQCh. 41 - Prob. 3IQCh. 41 - Prob. 4IQCh. 41 - Prob. 5IQCh. 41 - For each of the following molecules, describe...Ch. 41 - Prob. 7IQCh. 41 - Prob. 8IQCh. 41 - Label the indicated structures in the following...Ch. 41 - Prob. 1TYKM
Ch. 41 - Prob. 2TYKMCh. 41 - Prob. 3TYKMCh. 41 - Prob. 4TYKMCh. 41 - Prob. 5TYKMCh. 41 - Prob. 6TYKMCh. 41 - Prob. 7TYKMCh. 41 - Prob. 8TYKMCh. 41 - Prob. 1TYKCh. 41 - Prob. 2TYKCh. 41 - Prob. 3TYKCh. 41 - Prob. 4TYKCh. 41 - Substrate feeders such as earthworms a. eat mostly...Ch. 41 - Prob. 6TYKCh. 41 - Why does salivary amylase not hydrolyze starch in...Ch. 41 - What is the advantage of mechanical digestion of...Ch. 41 - Prob. 9TYKCh. 41 - Prob. 10TYKCh. 41 - Prob. 11TYKCh. 41 - Prob. 12TYKCh. 41 - Prob. 13TYKCh. 41 - Prob. 14TYKCh. 41 - Prob. 15TYKCh. 41 - Prob. 16TYKCh. 41 - Prob. 17TYKCh. 41 - Prob. 18TYK
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- There are two different kinds of secretions associated with the digestive system that needs to be understood to avoid confusion when describing how the digestive system functions. Which one of these secretions will be involved in the control of digestion through the blood? A.Endocrine B.Exocrinearrow_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_forwardWhat 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 digestionarrow_forward
- 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.arrow_forwardWhich 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 completionarrow_forwardHow 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.arrow_forward
- Which of the following statements is/are TRUE?A. Cells in a resting metabolic state have low ATP and NADH.B. Cells in a highly active metabolic state have high ATP but low NADH.C. Cells in a highly active metabolic state has high NADH but low ATP.In the stomach, the dietary fats are emulsified by?A.peristalsisB.pancreatic lipaseC. bile saltsD. lingual lipasearrow_forwardWhich of the following describes the function of lipoprotein lipase? Select one: a. It catalyzes the synthesis of lipoproteins b. It helps recycle unused cholesterol by converting to bile salts c. It helps to transport VLDL's in the blood d. It cleaves fatty acids from chylomicrons e. It helps to increase concentration of "good cholesterol"arrow_forwardWhich of the following function below is not performed by the liver? a. deamination of amino acids to form keto acids b. production of glucagon c. conversion of non-carbohydrate molecules to glucose d. synthesis of lipoproteins to transport fatty acidsarrow_forward
- digestion. a. mechanical b. chemical 3. Solid waste is stored in the a. rectum b. liver C. small intestine 4. Solid materials that are not digested and are eliminated from the body through the anus are called a. urine b. feces c. perspiration Use the diagram to answer the next two questions. 5. The helper organ of the digestive system that functions to store bile produced by the liver is called C. liver a. pancreas b. gall bladder 6 This helper organ that produces enzymes to help break down proteins and starches It also helps to regulate blood sugar Student-Google C. Student-Google C. O New Tab - Google.. Type here to searcharrow_forwardWhich of the following statements about gastric secretion of HCl is FALSE? a. HCl is secreted by parietal cells b. HCl hydrolyzes peptide bonds c. HCl is needed for the conversion of pepsinogen to pepsin d. HCl is needed for maximum activity of pepsinarrow_forwardWhat 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 intestinearrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human digestive system - How it works! (Animation); Author: Thomas Schwenke;https://www.youtube.com/watch?v=X3TAROotFfM;License: Standard Youtube License