BIO 1008 Seminar Objectives Unit 3: Digestive System and Nutrition and Metabolism
Tentative Lecture Exam 3 Date: April 10, 2008

Note: There is a section on the Digestive System on your IP-CD.

Ch. 16 Digestive System Questions:

1. Trace a parcel of food through the digestive tract from the mouth to the anus—naming all organs, sphincters, and valves through which the food passes.

2. Define: mastication, peristalsis, segmentation, hydrolysis and absorption as they apply to the digestive process. Define: cholecystitis, colectomy, colostomy, inflammatory bowel disease (ulcerative colitis), perforated ulcer, and diverticulum.

3. Define and explain the importance of (a) rugae, (b) gastric glands; (c) chief cells, (d) parietal cells, and (e) mucous cells in the stomach mucosa.

4. Describe the functions of the following products of the pancreas: (a) trypsinogen; (b) lipase; (c) amylase; (d) sodium bicarbonate; (e) insulin; (f) glucagon.

5. Briefly describe the origin, target, and action of each of the following local hormones: stomach gastrin; secretin; cholecystokinin (CCK); and gastric inhibitory peptide (GIP).

6. Describe the organs and enzymes involved in the chemical digestion of proteins.

7. Describe the organs and enzymes involved in the chemical digestion of carbohydrates.

8. Describe the organs, processes, enzymes, and other substances involved in the emulsification and chemical digestion of fats.

Note: There is a section regarding anaerobic and aerobic respiration on your IP-CD: Muscular System.

Chapter 17 Nutrition and Metabolism Questions:

9. Define metabolism, aerobic metabolism and anaerobic metabolism. Distinguish between catabolism and anabolism, and give one specific chemical reaction as an example for each of these.

10. Describe the major chemical events involved in the process of glycolysis. (See Figure 17-3). Is this pathway aerobic or anaerobic?

11. Describe the major chemical events involved in the "transition step" (the stage of metabolism where pyruvate is converted to Acetyl CoA).

12. Describe the reactions of the TCA cycle (i.e. Krebs or Citric Acid Cycle). (See Figure 17-4).

13. Describe in general the reactions involved in the electron transport system/chain (See Fig. 17-5).

14. Summarize the energy yield in terms of number of ATP produced (and used) in the complete oxidation of one glucose molecule. What two additional products are produced by the end of the electron transport chain?

15. Define: gluconeogenesis; lipolysis, lipogenesis, BMR; essential fatty acids, essential amino acids; calorie (c or cal.); kilocalorie (kcal); Calorie (C); oxidative phosphorylation, avitaminosis, and ketosis.

16. Referring to our past or present studies, give a function for each of the following vitamins: A, D, K, B₁₂, C, riboflavin, pantothenic acid and niacin.

Last Updated 02/08/08

BIO 1008 Resources | Mrs. Caley Opsal's Home | IVCC Home | Contact Us | Contact Mrs. Caley Opsal