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These are exercise test questions to help build your knowledge of digestion and absorption lectures. This will help expand your knowledge on the topics to maximize learning at a deeper level, build confidence and help you succeed in the course.
| 1. Which of the following byproducts of bacterial digestion can be used for energy by hepatic and intestinal cells? |
| A. |
Methane gas |
| B. |
Hydrogen gas |
| C. |
Butyric acid |
| D. |
Vitamin K |
| E. |
Vitamin B complex |
| 2. Which of the following facilitates the hydrolysis of lipids by pancreatic enzymes in the intestines? |
| A. |
Secretin |
| B. |
Bacteria |
| C. |
Bile salts |
| D. |
Bicarbonate |
| E. |
Hydrochloric acid |
| 3. Which of the following enzymes digests triglycerides into two fatty acids and 2-monoacylglycerol in the mouth, stomach and intestines? |
| A. |
Colipase |
| B. |
Lipase |
| C. |
Alpha-amylase |
| D. |
Pepsin |
| E. |
Chymotrypsin |
| 4. Which of the following can safely transport long chain fatty acids in circulation? |
| A. |
Albumin |
| B. |
Chylomicrons |
| C. |
Bile salts |
| D. |
Bicarbonate |
| E. |
Micelles |
| 5. Which of the following nutrient pairs can passively diffuse out of the intestinal cells and is transported bound to plasma proteins in circulation? |
| A. |
Matured chylomicrons and dipeptides |
| B. |
Polar amino acids and fructose |
| C. |
Galactose and small tripeptides |
| D. |
Short fatty acids and nonpolar amino acids |
| E. |
Fructose and nascent chylomicrons |
| 6. A 35 year old patient has consumed aspirin on a daily basis for his usual headaches as a result of his stressful job. An endoscopy (a flexible probe with a camera on the end) was performed to check the stomach lining. Results showed inflammation and mucous erosion. What enzyme zymogen can be helpful in the diagnosis of suspected gastritis? |
| A. |
Trypsinogen |
| B. |
Proelastase |
| C. |
Procarboxypeptidase |
| D. |
Chymotrypsinogen |
| E. |
Pepsinogen |
| 7. Which of the following pancreatic enzymes is activated by trypsin to help digest phospholipids in the intestines? |
| A. |
Chymotrypsinogen |
| B. |
Proelastase |
| C. |
Procollagenase |
| D. |
Prophospholipase A2 |
| E. |
Procarboxypeptidase |
| 8. Which of the following can allow fructose in and out of the intestinal cells? |
| A. |
Sodium-dependent transporters (SGLT1) |
| B. |
Hydrogen-dependent transporter |
| C. |
Glucose transporter 4 (GLUT4) |
| D. |
Glucose transporter 5 (GLUT5) |
| E. |
Passive diffusion |
Source:
OpenStax, Biochemistry exercises. OpenStax CNX. Apr 06, 2016 Download for free at https://legacy.cnx.org/content/col11386/1.4
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