Life science

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October 21st, 2022

Life Science Chapters 16 & 17
1. Which of the following processes does not occur in the digestive system exclusively?
a. Digestion
b. Absorption
c. Metabolism
d. All of the above occur in the digestive system exclusively
ANS: C DIF: Memorization REF: p. 369
2. Which of the following is an accessory organ of the digestive system?
a. Salivary glands
b. Mouth
c. Pharynx
d. Both a and c above
ANS: A DIF: Memorization REF: p. 368
3. The layer of the digestive tract that generates peristalsis is the
a. serosa
b. muscularis
c. submucosa
d. mucosa
ANS: B DIF: Memorization REF: p. 370
4. Enamel is found in the
a. root of the tooth
b. crown of the tooth
c. neck of the tooth
d. all of the above
ANS: B DIF: Memorization REF: p. 371
5. Dentin is found in the
a. root of the tooth
b. crown of the tooth
c. neck of the tooth
d. all of the above
ANS: D DIF: Memorization REF: p. 371
Life Science Chapters 16 & 17
6.
Lining each tooth socket is
a. a mucous membrane
b. a simple squamous epithelium membrane
c. a periodontal membrane
d. dentin
ANS: C DIF: Memorization REF: p. 371
7. Which of the following is not considered a main part of the tooth?
a. Root
b. Cuspid
c. Crown
d. Neck
ANS: B DIF: Memorization REF: p. 372 OBJ: 2 TOP: Typical tooth
8. The term tricuspids refers to these types of teeth
a. incisors
b. canines
c. premolars
d. molars
ANS: D DIF: Application REF: p. 372 OBJ: 2
9. Canine teeth are sometimes called
a. cuspids
b. incisors
c. bicuspids
d. tricuspids
ANS: A DIF: Memorization REF: p. 372
10. Which of the following is not considered a main part of the tooth?
a. Root
b. Cuspid
c. Crown
d. Neck
ANS: B DIF: Memorization REF: p. 372 OBJ: 2 TOP: Typical tooth
Life Science Chapters 16 & 17
11. Tooth decay, or dental caries, is a disease of this part of the tooth
a. enamel
b. dentin
c. cementum
d. all of the above
ANS: D DIF: Memorization REF: p. 372 OBJ: 2 TOP: Typical tooth
12. Sharp cutting-edge teeth used for cutting during chewing are called
a. incisors
b. canines
c. premolars
d. molars
ANS: A DIF: Memorization REF: p. 372 OBJ: 2 TOP: Types of teeth
13. This part of the pharynx is the most actively and directly involved in the digestive process
a. nasopharynx
b. oropharynx
c. laryngopharynx
d. epiglottis
ANS: B DIF: Memorization REF: p. 373 OBJ: 2 TOP: Pharynx
14. The part of the stomach that joins with the small intestine is the
a. pylorus
b. fundus
c. body
d. rugae
ANS: A DIF: Memorization REF: p. 375
OBJ: 2 TOP: Stomach
15. Which of the following structures does not help to increase the absorptive surface area of the
small intestine?
a. Villi
b. Plicae
c. Lacteal
d. Microvilli
Life Science Chapters 16 & 17
ANS: C DIF: Memorization REF: p. 378
OBJ: 2 TOP: Small intestine
16. The vermiform appendix
a. produces enzymes that assist in fat digestion
b. gets its name because it looks like a worm
c. is important in the reabsorption of bile
d. none of the above
ANS: B DIF: Memorization REF: p. 382 OBJ: 2 TOP: Appendix
17. Which blood vessel allows blood from the digestive system to be sent directly to the liver?
a. Hepatic artery
b. Hepatic portal vein
c. Mesenteric vein
d. Inferior vena cava
ANS: B DIF: Memorization REF: p. 397 OBJ: 2 TOP: Metabolic functions
of the liver
18. The most abundant end product of carbohydrate digestion is
a. maltose
b. glucose
c. lactose
d. sucrose
ANS: B DIF: Memorization REF: p. 384 OBJ: 3 TOP: Carbohydrate
digestion
19. Protein digestion
a. end products are amino acids
b. uses peptidase made in the small intestines
c. uses trypsin made in the pancreas
d. all of the above
ANS: D DIF: Memorization REF: p. 384 OBJ: 3 TOP: Protein digestion
Life Science Chapters 16 & 17
20. The movement of digested food from the digestive system to the circulating fluid is called
a. digestion
b. deglutition
c. absorption
d. peristalsis
ANS: C DIF: Memorization REF: p. 385 OBJ: 3 TOP: Absorption
21. Which of the following substances is absorbed by the large intestine?
a. Salts
b. Vitamin K
c. Water
d. All of the above
ANS: D DIF: Memorization REF: p. 382
22. The length of the gastrointestinal tract in an adult is about
a. 9 feet
b. 19 feet
c. 29 feet
d. 39 feet
ANS: C DIF: Memorization REF: p. 368 OBJ: 1 TOP: Introduction
23. Which of the following is not true of the gastrointestinal tract?
a. It is about 9 feet long in adults.
b. It is also called the alimentary canal.
c. The material in the gastrointestinal tract is considered to be outside the
body. d. All of the above are true of the gastrointestinal tract.
ANS: A DIF: Memorization REF: p. 368 OBJ: 1 TOP: Introduction
24. At the hepatic flexure, the
a. transverse colon becomes the descending colon
b. descending colon becomes the transverse colon
c. ascending colon becomes the transverse colon
d. ascending colon becomes the descending colon
ANS: C DIF: Memorization REF: p. 381 OBJ: 2 TOP: Large intestine
25. Proper nutrition requires the correct balance of three types of food. They
are a. fruits, vegetables, and meats
Life Science Chapters 16 & 17
b. carbohydrates, dairy products, and proteins
c. carbohydrates, fats, and proteins
d. proteins, whole grains, and fruits
ANS: C DIF: Memorization REF: p. 394
OBJ: 1 TOP: Introduction
26. The liver produces bile for the emulsification of fat.
ANS: T DIF: Memorization REF: p. 396 OBJ: 2 TOP: Metabolic functions
of the liver
28. The liver carries out the first steps in both protein and carbohydrate metabolism.
ANS: F DIF: Memorization REF: p. 396 OBJ: 2 TOP: Metabolic functions
of the liver
29. The liver produces plasma proteins such as prothrombin and fibrinogen.
ANS: T DIF: Memorization REF: p. 396 OBJ: 2 TOP: Metabolic functions
of the liver
30. Which of the following is not a function of the liver?
a. Produces bile
b. Carries out the first step of carbohydrate metabolism
c. Produces fibrinogen
d. All of the above are functions of the liver
ANS: D DIF: Memorization REF: p. 396 OBJ: 2 TOP: Metabolic function
of the liver
31. Which of the following is not a function of the liver?
a. Helps maintain the normal blood glucose
concentration b. Produces albumin
c. Produces vitamin A
d. All of the above are functions of the liver
ANS: C DIF: Memorization REF: p. 396 OBJ: 2 TOP: Metabolic function
of the liver
32. The citric acid cycle
a. occurs in the mitochondria
b. produces pyruvic acid as an end product
c. occurs in the cytoplasm
d. both b and c above
Life Science Chapters 16 & 17
ANS: A DIF: Memorization REF: p. 398 OBJ: 2 TOP: Carbohydrate
metabolism
33. The citric acid cycle
a. occurs in the mitochondria
b. follows glycolysis
c. is important in carbohydrate anabolism
d. both a and b above
ANS: D DIF: Memorization REF: p. 398 OBJ: 2 TOP: Carbohydrate
metabolism
34. Which of the following is categorized as a micronutrient?
a. Carbohydrate
b. Protein
c. Fats
d. Mineral
ANS: D DIF: Memorization REF: p. 397
OBJ: 2 TOP: Dietary sources of nutrients
35. ATP
a. serves as the direct source of energy for the cell
b. releases food energy slowly
c. is produced primarily by the citric acid cycle
d. both a and c above
ANS: A DIF: Memorization REF: p. 398 OBJ: 2 TOP: Carbohydrate
metabolism
36. Nonessential amino acids
a. are not used by the body
b. can be made by the body from other substances
c. are used only for catabolism
d. are found only in plant proteins
ANS: B DIF: Memorization REF: p. 400 OBJ: 2 TOP: Protein metabolism
37. Vitamins
a. are organic compounds
b. are inorganic compounds
c. can be stored by the liver if they are water soluble
d. both a and c above
ANS: A DIF: Memorization REF: p. 400 OBJ: 2 TOP: Vitamins and
minerals
Life Science Chapters 16 & 17
38. The TMR
a. is usually less than the BMR
b. is usually greater than the BMR
c. increases as activity increases
d. both b and c above
ANS: D DIF: Application REF: p. 403 OBJ: 3 TOP: Metabolic rates
39. To safely lose weight
a. increase caloric intake above TMR
b. maintain caloric intake and reduce TMR
c. decrease caloric intake to below TMR
d. both a and b will cause weight loss
40. Liver cells are unable to store which of the following substances?
a. Vitamin C
b. Vitamin D
c. Iron
d. Liver cells can store all of the above
ANS: A DIF: Memorization REF: p. 397 OBJ: 2 TOP: Metabolic functions
of the liver
41. Which of the following vitamins can be stored by the liver?
a. C
b. B
c. A
d. Both a and b above
42. Which blood vessel allows blood from the digestive system to be sent directly to the
liver?
a. Hepatic artery
b. Hepatic portal vein
c. Mesenteric vein
d. Inferior vena cava
ANS: B DIF: Memorization REF: p. 397 OBJ: 2 TOP: Metabolic functions
of the liver
Life Science Chapters 16 & 17
43. Usable energy in the ATP molecule is stored in the
a. adenosine portion of the molecule
b. bond attaching the adenosine to the first phosphate
group c. bond between the second and third phosphate
groups
d. both b and c above
ANS: C DIF: Memorization REF: p. 398 OBJ: 2 TOP: Carbohydrate
metabolism
44. Metabolism includes
a. anabolism and assimilation
b. catabolism and nutrition
c. anabolism and catabolism
d. nutrition and assimilation
ANS: C DIF: Memorization REF: p. 396 OBJ: 1 TOP: Introduction
45. Glycolysis
a. follows the citric acid cycle in carbohydrate
metabolism b. requires oxygen
c. occurs in the cytoplasm
d. both b and c above
ANS: C DIF: Memorization REF: p. 397 OBJ: 2 TOP: Carbohydrate
metabolism
46. Glycolysis
a. has pyruvic acid as an end product
b. occurs in the mitochondria
c. requires oxygen
d. both a and b above
ANS: A DIF: Memorization REF: p. 397 OBJ: 2 TOP: Carbohydrate
metabolism
47. This vitamin acts as an antioxidant for the body
a. vitamin A
b. vitamin B
c. vitamin D
d. vitamin E
ANS: D DIF: Memorization REF: p. 400 OBJ: 2 TOP: Vitamins and
minerals
Life Science Chapters 16 & 17
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