Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 46, Problem 3TY
Summary Introduction
Introduction:
Digestion is a process which involves several steps and various types of enzymes. This process is the primary function of the body. It is essential to make sure that the body’s energy requirement is fulfilled.
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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 answer choices is true of bile salts?
Select one:
a.
They increase efficiency of pepsin action
b.
They are synthesized in the pancreas
c.
They are a normal part of secretions in the monogastric stomach
d.
They emulsify fat in the duodenum
e.
They function as digestive enzymes
Which 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.
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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- 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 formarrow_forwardWhich of the following statements is true?a. Intracellular digestion commonly occurs in vertebrates.b. Absorption of nutrients always requires active transport.c. Alimentary canals have two openings, whereas gastrovascularcavities have only one.d. Extracellular, but not intracellular, digestion requires hydrolyticenzymes.e. Most minerals are absorbed by simple diffusion.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_forward
- Which 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_forwardAll of the following statements regarding the liver are true except one, which one? a. it can convert amino acids to glucose during periods of fasting b. it contains special phagocytic cells which remove worn-out blood cells from the circulation c. blood from the hepatic artery and portal vein travels away from the central vein of each lobule d. it converts ammonia to ureaarrow_forwardA. 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_forward
- Which of these could be absorbed directly without need ofdigestion?a. glucose d. nucleic acidb. fat e. All of these are correct.c. proteinarrow_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_forwardWhich of the following is an unregulated process in the digestive tract? a. secretion of cholecystokinin (CCK) by the duodenal mucosa b. absorption of amino acids across the epithelium of the small intestine c. release of bicarbonate ion (HCO3–) by pancreatic duct cells d. peristalsis in the stomacharrow_forward
- 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 completionarrow_forwardWhich of the following pancreatic enzymes yields an absorbable nutrient? O a. aminopeptidase b.carboxypeptidase c. chymotrypsin d. amylase e. all of thesearrow_forwardMatch the organ or gland with the enzyme(s) it secretes. Enzymes may be used more than once. An organ or gland may secrete more than one enzyme.(1) salivary glands (serous cells) (2) stomach (chief cells) A. peptidase B. amylase C. nuclease (3) pancreas (acinar cells) (4) small intestine D. lipase E. pepsinogen F. trypsin, chymotrypsin, carboxypeptidase G. sucrase, maltase, lactasearrow_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