68. Most nutrients absorbed into the lacteal or bloodstream are in which form? a. disaccharides b. polymers c. monomers d. peptides 69. Which of the following enzymes has the lowest pH optimum? a. amylase b. pepsin c. lipase d. trypsin 70. Individuals whose diet consists of primarily corn would likely become a. anorexic b. overnourished c. undernourished d. malnourished 71. Which of the following organs is incorrectly paired with its function? a. stomach β protein digestion b. mouth β carbohydrate digestion c. large intestine β bile production d. small intestine β nutrient absorption into the bloodstream 72. In which blood vessel is glucose concentration likely to vary the most? a. abdominal artery b. coronary arteries c. pulmonary veins d. hepatic portal vessel 73. Which of the following statements is false? a. the average human has enough stored fat to supply calories for several weeks b. an increase in the hormone Leptin, leads to an increase in appetite and weight gain c. conversion of glucose and glycogen takes place in the liver d. carbohydrates and fats are preferentially used as fuel for the body before proteins are used 74. The purpose of antidiarrhea medicine would most likely be to a. speed up peristalsis in the small intestine b. speed up peristalsis in the large intestine c. kill E. coli in the intestine d. increase water reabsorption in the large intestine
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Most nutrients absorbed into the lacteal or bloodstream are in which form? The correct answer is c. monomers. When nutrients are absorbed into the lacteal or bloodstream, they are typically in their simplest form, which is monomers. Monomers are the building Show moreβ¦
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7. Which of the following is produced by the liver? A. amylase B. bile C. pepsin D. renin 8. Which organ stores bile and pumps it into duodenum? A. appendix B. colon C. gall bladder D. pancreas 9. What is the result of chemical digestion of carbohydrates? A. amino acid B. bile C. fatty acids D. simple sugars 10. Where does absorption of nutrients mostly occur? A. stomach B. small intestine C. large intestine D. all the above 11. What aids the passage of food through the digestive tract? A. pull from the anus B. chemical absorption C. movement of the cilia D. wavelike muscle contractions 12. What is the main work of the digestive system? A. fights disease B. regenerates cells C. breaks down food D. distributes energy throughout the body 13. Which of the following is the correct order of the digestive tract? A. mouth rectum esophagus β rectum anus β small intestine large intestine B. mouth β stomach β esophagus β rectum anus β small intestine -large intestine C. mouth - esophagus β stomach β small intestine β large intestine rectum - anus D. mouth β esophagus stomach - small intestine - anus large intestine - rectum
Madhur L.
The thick, soupy liquid of partially digested food that leaves the stomach is called a. chyme. b. lipase. c. lacteal. d. chyme. e. pepsin. 2. Which of the following is not a direct function of the digestive system? a. to eliminate indigestible remains b. to protect against pathogens c. to absorb nutrient molecules d. to digest food into small nutrients so that the molecules can pass through membranes e. to ingest food 3. What does the large intestine do? a. Mixes food with pancreatic enzyme b. Breaks down proteins and fats c. Storage of feces, reabsorption of water d. Site of most nutrient absorption e. Mixes bolus of food in an acidic environment to form chyme 4. What enzyme begins the process of starch digestion in the mouth? a. salivary lipase b. salivary sucrase c. salivary amylase d. salivary lactase e. salivary protease 5. Which is the correct order that food passes through the small intestine? a. Duodenum, Jejunum, ileum b. Jejunum, ileum, duodenum c. Cecum, ascending colon, transverse colon d. Sigmoid colon, rectum, anus 6. What serves as an emulsifying agent for fats in the small intestine? a. maltase b. bile c. pepsin d. amylase e. lipase
Maitreya E.
3. Carbohydrates A. Carbohydrate digestion begins in the oral cavity. Name the enzyme that initiates carbohydrate digestion. Name the 3 sets of organs that secrete this enzyme. B. Describe how carbohydrates are chemically digested in the small intestine. Include a discussion of brush border enzymes. C. Does the pancreas release any enzymes which chemically digest carbohydrates? If yes, name it (them). How does pancreatic juice enter the small intestine? D. Fiber (AKA cellulose in plant cell walls) is not digestible. Why not? Despite not being digestible, fiber is beneficial to our health. Why? 4. Proteins A. Where are proteins first digested chemically? What enzyme initiates protein digestion? B. Does the pancreas release any enzymes that chemically digest proteins? If yes, name it (them). C. Describe 3 ways in which the body uses these protein subunits. 5. Fats A. Chemical digestion of lipids occurs primarily in the small intestine. Before enzymes can break down fats like triglycerides (the most common type of fat in our foods), they must undergo emulsification. Describe the process of emulsification. Name the substance which performs this job. Name the organ that synthesizes this substance. Name the organ which stores and concentrates this substance. How does this substance get into the duodenum of the small intestine? B. After fats are emulsified, they are chemically digested. What is the general name for enzymes which digest fats? Name all of the organs which synthesize and secrete this enzyme into the digestive tract. C. Cholesterol is a type of fat. Why is it important to have some cholesterol in our diets? Why is it important not to have too much cholesterol in our diets? 6. Waste Production A. The large intestine AKA colon is the digestive organ which produces feces. Starting with the cecum and ending with the anus, name ALL parts of the large intestine in order. B. How does the large intestine convert liquid waste from the small intestine into solid waste to be eliminated from the body? C. Name 5 components of fecal matter. NOTE that the small intestine absorbs ALL of the digestible carbohydrates, proteins, and fats in our diets; thus, these nutrients must NOT be in your list.
Sri K.
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