PracticeFinalPartIII 09

PracticeFinalPartIII 09 - Practice Final for Section 3...

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Practice Final for Section 3 Please also consider the Sample Questions for MIDTERM 3 Where are carbohydrates digested in the body? A. mouth and stomach B. stomach and small intestine C. small intestine and large intestine D. mouth and small intestine Dietary cellulose is not a substrate of digestive enzymes but is a common component of ingested vegetables. What would most likely occur if you eat excessive vegetables, thereby increasing digestive tract levels of cellulose? A. nothing; no consequences would result from eating excessive cellulose B. the cellulose will be absorbed by the epithelial cells of the small intestine C. the cellulose will become fiber and also will cause diarrhea D. the cellulose will be enzymatically hydrolyzed by enterokinase E. the cellulose will be absorbed by the epithelial cells of the large intestine Bile salts are secreted in response to fat in the duodenum. What hormone controls this secretion and; where are bile salts produced? A. Gastrin; pancreas B. CCK; liver C. Histamine; liver D. Somatostatin; pancreas What purpose then do bile salts serve? A. bile salts emulsify fats to aid in their digestion B. bile salts function bring triglycerides into the lymphatic system C. bile salts catalyze the hydrolysis of triglycerides to monoglycerides and fatty acids D. both a and b T/F: During peristalsis, smooth and/or skeletal muscle behind the food relaxes while smooth muscle in front of the food contracts. Which of the following is not a function of the stomach A. Secrete HCl B. Absorb protein C. Store food D. Destruction of bacteria This cell type secretes gastrin: A. parietal B. ECL cell C. G cell D. chief cell
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T/F: Microvilli, villi and plicae circulares increase the surface area in the large intestine. Which of the following is NOT true about people who are lactose intolerant: A. they cannot digest lactose B. they should not attempt the dive at Fenton's C. the lumen of their GI tract has decreased osmolarity D. if they ingested diary products they would get diarrhea T/F During the cephalic phase of gastrointestinal control, saliva is generated and stomach acid is secreted to prepare for food intake. Zymogens of the GI system are secreted A. Into the stomach by the pancreas B. As trypsinogen that is converted to trypsin in the stomach C. As pepsinogen which autocatalyzes conversion to pepsin D. As trypsinogen which autocatalyzes conversion to trypsin Where are proteins digested in the body? A. mouth and stomach B. stomach and small intestine C. small intestine and large intestine D. mouth and small intestine Secretion of CCK in the small intestine is modulated by whereas the release of somataostatin is modulated by . A. pH; nutritional contents of the chyme
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This note was uploaded on 11/02/2011 for the course MCB 32 taught by Professor Wurmser during the Fall '07 term at Berkeley.

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PracticeFinalPartIII 09 - Practice Final for Section 3...

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