Question 13 2 pts For monogastrics, in what GIT organ are the glycosidic bonds found in pectin first hydrolyzed? O Mouth O Stomach O Small intestine O Pancreas O Large intestine O Pectin is not hydrolyzed at all in monogastrics
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Pectin is a complex carbohydrate found in plant cell walls. Glycosidic bonds link the sugar units in pectin. Show more…
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Carbohydrate digestion begins in the _____, whereas protein digestion begins in the _____. Select one: a. liver; small intestine b. mouth; small intestine c. mouth; stomach d. small intestine; stomach
Adi S.
After ingestion, the first type of macromolecule to be worked on by enzymes in the mouth is: - protein - carbohydrate - fat - nucleic acids Which of the following statements about the digestive system is true? - All foods begin their enzymatic digestion in the mouth - After leaving the oral cavity, the bolus enters the esophagus - The epiglottis prevents food from entering the trachea - Enzyme production continues in the stomach - The esophagus leads to the stomach Which of the following statements about pepsin is true? Pepsin: - is manufactured by the stomach - helps stabilize fat-water emulsions - splits maltose into monosaccharides - begins the hydrolysis of proteins in the stomach - is denatured and rendered inactive in solutions with low pH Without functioning parietal cells, an individual would: - not be able to initiate protein digestion in the stomach - not be able to initiate mechanical digestion in the stomach - only be able to digest fat in the stomach - not be able to produce pepsinogen - not be able to initiate digestion in the small intestine Enzymatic hydrolysis of all of the macromolecules to their simple forms occurs in the: - small intestine - large intestine - stomach - liver Most nutrients are absorbed across the epithelium of the: - villi of the small intestine - rugae of the stomach - mucosal layer of the esophagus - mucosa of the large intestine A structure that does not manufacture any digestive substances is the: - duodenum - pancreas - salivary gland - gallbladder Which of the following statements about bile salts is true? - Bile salts are not enzymes - Bile salts are made by the liver - Bile salts emulsify fats in the duodenum - Bile salts increase the efficiency of pepsin action - Bile salts are normally an ingredient of gastric juice Which structure is home to large amounts of E. coli that produces Vitamin K as a by-product of their metabolism? - esophagus - stomach - small intestines - large intestines How does the digestion and absorption of fat differ from that of carbohydrates? - The process of fat does not require any digestive enzymes whereas the processing of carbohydrates does - Fat absorption occurs in the small intestine whereas carbohydrates are absorbed from the small intestine - Carbohydrates need to be emulsified before they are digested whereas fats do not - Most absorbed fat first enters the lacteal whereas carbohydrates directly enter the blood
The most important structure for nutrient absorption in the digestive system is the a. mouth b. stomach c. large intestine d. small intestine e. esophagus 2. What is the name of the lymphatic vessels located in the small intestine? a. Adenoids b. Lacteals c. Polyps d. Tonsils e. Nodes 3. Which of the following is not associated with the stomach? a. gastric glands b. alcohol absorption c. pepsin d. duodenum e. rugae 4. Which of the following is not considered an accessory organ of the digestive system? a. pancreas b. salivary glands c. liver d. small intestine e. gallbladder 5. Pepsin is an enzyme that digests proteins at acidic pH. Therefore, it must act in the a. mouth b. small intestine c. large intestine d. stomach e. esophagus 6. Where does chemical digestion of proteins begin? a. Stomach b. Large Intestine c. Esophagus d. Small Intestine e. Mouth
Madhur L.
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