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- Figure 34.11 Which of the following statements about the digestive system is false? Chyme is a mixture of food and digestive juices that is produced in the stomach. Food enters the large intestine before the small intestine. In the small intestine, chyme mixes with bile, which emulsifies fats. The stomach is separated from the small intestine by the pylloric sphincter.Figure 34.12 Which of the following statements about the small intestine is false? Absorptive cells that line the small intestine have microvilli, small projections that increase surface area and aid in the absorption of food. The inside of the small intestine has many folds, called villi. Microvilli are lined with blood vessels as well as lymphatic vessels. The inside of the small intestine is called the lumen.Which of the following enzymes is involved in protein digestion in the small intestine? O Pepsinogen O Trypsin O Cholecystokinin O Pepsin
- digestion of what types of molecules occurs in the following parts of the digestive system mouth stomach small intestine large intestineWhich of the following digestive secretion is not an enzyme? amylase mucus pepsin maltaseWhere in the digestive system would you expect fats (e.g. lipids) to be digested? stomach large intestine small intestine liver pancreas
- In the buccal cavity of human being, digestion of which one of the following get started? 1. Protein 2. Fat 3. Carbohydrates None of the aboveWhich of the following structures produces digestive enzymes? the liver the small intestine the endocrine pancreas the gallbladder all of these produce digestive enzymesWhich of the following are absorbed into epithelial cells of the intestinal villi, but not into the blood? Amino Acids Dipeptides Tripeptides Both dipeptides and Tripeptides Amino Acids and Tripeptides
- Both the esophagus and the small intestine are involved in the digestion of food. The esophagus squeezes food into the stomach by wave-like muscle contractions. Peptidase enzymes in the small intestine break food molecules into smaller molecules. Which statement best describes changes to food during digestion? O The muscle contractions result in physical changes, while the action of the peptidase results in chemical changes. O The muscle contractions and the action of the peptidase both result only in physical changes. O The muscle contractions result in chemical changes, while the action of the peptidase results in physical changes. O The muscle contractions and the action of the peptidase both result only in chemical changes. 8. 9. 10 11 12 13 14 15 16 17 20 近In which of the following organs does pepsin perform enzymatic digestion? The stomach The small intestine The mouth The large intestineHow does the digestion and absorption of fat differ from that of carbohydrates? O Carbohydrates need to be emulsified before they can be digested, whereas fats do not. O Processing of fat does not require any digestive enzymes, whereas the pro ing of carbohydrates does. O Fat absorption occurs in the stomach, whereas carbohydrates are absorbed from the small intestine. O Most absorbed fat first enters the lymphatic system, whereas carbohydrates directly enter the blood.
