Human physiology 13th edition stuart ira fox test bank download by william.satterwhite313

Chapter 06 - Interactions Between Cells and the Extracellular Environment

Human Physiology 13th Edition Stuart Ira Fox

0073403628 9780073403625

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Chapter 06

Interactions Between Cells and the Extracellular Environment

True / False Questions

1. 80% of the extracellular fluid is termed as interstitial fluid.

TRUE Blooms Level: 1. Remember Learning Outcome: 06.01

Section: 6.01

Topic: Cells

2. Interstitial fluid is made from blood plasma and returns to blood plasma.

TRUE Blooms Level: 1. Remember Learning Outcome: 06.01

Section: 6.01

Topic: Cells

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6-1

Chapter 06 - Interactions Between Cells and the Extracellular Environment

Multiple Choice Questions

3. How much of the total body water content is in the intracellular compartment?

A. 50%

B. 67%

C. 33%

D. 80% Blooms Level: 1. Remember Learning Outcome: 06.01

Section: 6.01

Topic: Cells

4. The majority of water within the body is found in the

A. intracellular compartment.

B. extracellular compartment.

C. blood plasma.

D. interstitial fluid.

Blooms Level: 1. Remember Learning Outcome: 06.01

Section: 6.01

Topic: Cells

5. How much of the extracellular fluid comes from blood plasma?

A. 33%

B. 92%

C. 20%

D. 50% Blooms Level: 1. Remember Learning Outcome: 06.01

Section: 6.01

Topic: Cells

6-2

True / False Questions

6. The extracellular matrix is made up of collagen, elastin, and a gel-like ground substance.

TRUE Blooms Level: 1. Remember

Learning Outcome: 06.01

Section: 6.01

Topic: Cells Multiple Choice Questions

7. ___________________ comprise an important family of enzymes that can break down extracellular matrix proteins but require a zinc ion cofactor.

A. Matrix metallohydrolases

B. Matrix phosphokinases

C. Matrix metalloproteinases

D. None apply.

Blooms Level: 1. Remember

Learning Outcome: 06.01

Section: 6.01

Topic: Cells

6-3

Chapter 06 - Interactions Between Cells and the Extracellular Environment

8. What cofactor do matrix metalloproteinases need to be functional?

A. calcium

B. copper

C. chromium

D. zinc Blooms Level: 1. Remember

Learning Outcome: 06.01

Section: 6.01

Topic: Cells

6-4

Chapter 06 - Interactions Between Cells and the Extracellular Environment

9. ________ are a class of glycoproteins that bind to components in the extracellular matrix thereby acting as adhesion molecules between cells and the matrix.

A. Glycocalyces

B. Aquaporins

C. Desmosomes

D. Integrins

Blooms Level: 1. Remember Learning Outcome: 06.01

Section: 6.01

Topic: Cells

10. Matrix metalloproteinases

A. produce the basal lamina.

B. synthesize collagen in the extracellular matrix.

C. may be active in invasive cancer cells.

D. synthesize proteoglycans in the extracellular matrix.

Blooms Level: 1. Remember Learning Outcome: 06.01

Section: 6.01

Topic: Cells

11. Proteins that extend from the cytoskeleton within the cell, through the plasma membrane, and into the extracellular matrix are

A. lysosomal proteins.

B. metallo proteins.

C. receptor proteins.

D. integrin proteins.

Blooms Level: 1. Remember Learning Outcome: 06.01

Section: 6.01

Topic: Cells

6-5

Chapter 06 - Interactions Between Cells and the Extracellular Environment

12. Which of the following is NOT a function of integrins?

A. glue components of the matrix

B. communicate between the intracellular and extracellular compartments

C. allow diffusion to occur through the plasma membrane

D. establish cell polarity

Blooms Level: 1. Remember

Learning Outcome: 06.01

Section: 6.01

Topic: Cells

13. What structures affect cell motility, adhesion, and proliferation?

A. basal lamina

B. integrins

C. collagen IV

D. proteoglycans Blooms Level: 1. Remember

Learning Outcome: 06.01

Section: 6.01

Topic: Cells True / False Questions

14. Osmosis and simple diffusion do NOT require the actions of carrier proteins. TRUE Blooms Level: 1. Remember

Learning Outcome: 06.02

Section: 6.01

Topic: Cells

6-6

Chapter 06 - Interactions Between Cells and the Extracellular Environment

15. Active transport proceeds when energy is expended.

TRUE Blooms Level: 2. Understand

Learning Outcome: 06.02

Section: 6.01

Topic: Cells

Multiple Choice Questions

16. ____________________ is a term which describes a membrane that allows only certain molecules to pass through it.

A. Selectively permeable

B. Permeable

C. Porous

D. Countertransport Blooms Level: 1. Remember

Learning Outcome: 06.02

Section: 6.01

Topic: Cells

17. ____________ transport does not require membrane proteins.

A. Facilitated diffusion

B. Bulk

C. Simple diffusion

D. Active Blooms Level: 1. Remember

Learning Outcome: 06.02

Section: 6.01

Topic: Cells

6-7

Chapter 06 - Interactions Between Cells and the Extracellular Environment

18. Passive transport of water is known as

A. filtration.

B. osmosis.

C. facilitated diffusion.

D. a water pump.

Blooms Level: 1. Remember

Learning Outcome: 06.02

Section: 6.01

Topic: Cells

19. Active transport

A. utilizes energy.

B. cannot transport molecules against a concentration gradient.

C. cannot be saturated.

D. requires cofactors.

Blooms Level: 1. Remember

Learning Outcome: 06.02

Section: 6.01

Topic: Cells True / False Questions

20. Simple diffusion is the net diffusion of a solvent.

FALSE Blooms Level: 2. Understand

Learning Outcome: 06.03

Section: 6.02

Topic: Cells

6-8

Chapter 06 - Interactions Between Cells and the Extracellular Environment

Multiple Choice Questions

21. Diffusion ____________ the entropy of a solution.

A. decreases

B. increases

C. does not change

Blooms Level: 2. Understand

Learning Outcome: 06.03

Section: 6.02

Topic: Cells

22. Why are cells in body organs generally within 100 m of a blood capillary?

A. to decrease mean diffusion time

B. to increase mean diffusion time

C. so that larger particles can diffuse more easily

D. a larger distance maximizes entropy

Blooms Level: 2. Understand

Learning Outcome: 06.03

Section: 6.02

Topic: Cells

6-9

Chapter 06 - Interactions Between Cells and the Extracellular Environment

True / False Questions

23. The process in which waste molecules are removed from the blood by having them diffuse through an artificial porous membrane is called dialysis.

TRUE Blooms Level: 1. Remember

Learning Outcome: 06.03

Section: 6.02

Topic: Cells

6-10

Chapter 06 - Interactions Between Cells and the Extracellular Environment

Multiple Choice Questions

24. A solution consists of a ____________ which dissolves the ____________.

A. solvent, solute

B. solvent, solid

C. solute, solvent

D. liquid, solid

Blooms Level: 1. Remember

Learning Outcome: 06.03

Section: 6.02

Topic: Cells

25. Dialysis uses the process of

A. facilitated diffusion.

B. primary active transport.

C. simple diffusion.

D. secondary active transport.

Blooms Level: 1. Remember

Learning Outcome: 06.03

Section: 6.02

Topic: Cells

6-11

Chapter 06 - Interactions Between Cells and the Extracellular Environment

True / False Questions

26. Gas exchange between the cells and extracellular fluid utilizes active transport.

FALSE Blooms Level: 1. Remember Learning Outcome: 06.03

Section: 6.02

Topic: Cells

Multiple Choice Questions

27. Hydrophobic molecules usually enter a cell via __________.

A. osmosis

B. active transport

C. diffusion

D. protein channels

Blooms Level: 2. Understand Learning Outcome: 06.03

Section: 6.02

Topic: Cells

28. Individuals suffering from cystic fibrosis have defective ____________ ion channels.

A. sodium

B. potassium

C. calcium

D. chloride

Blooms Level: 1. Remember Learning Outcome: 06.03

Section: 6.02

Topic: Cells

6-12

Chapter 06 - Interactions Between Cells and the Extracellular Environment

29. Channels present in the membranes of some cells that allow rapid movement of water are called

A. water tubes.

B. aqueducts.

C. aquaporins.

D. streams.

Blooms Level: 1. Remember

Learning Outcome: 06.03

Section: 6.02

Topic: Cells

30. Which of the following is able to passively penetrate the plasma membrane?

A. O2

B. small charged particles

C. large polar molecules

D. All apply. Blooms Level: 2. Understand

Learning Outcome: 06.03

Section: 6.02

Topic: Cells

31. Ion channels that can be opened by physiological stimuli are said to be

A. polar.

B. aquaporins.

C. hypertonic.

D. gated. Blooms Level: 1. Remember

Learning Outcome: 06.03

Section: 6.02

Topic: Cells

6-13

Chapter 06 - Interactions Between Cells and the Extracellular Environment

32. How do small ions like Na+ of K+ pass through the plasma membrane?

A. gated channels

B. ion channels

C. carrier proteins

D. simple diffusion Blooms Level: 1. Remember Learning Outcome: 06.03

Section: 6.02

Topic: Cells True / False Questions

33. The rate of diffusion increases as the concentration gradient increases.

TRUE Blooms Level: 1. Remember Learning Outcome: 06.03

Section: 6.02

Topic: Cells

34. Diffusion is more rapid in cells with microvilli compared to cells lacking microvilli.

TRUE Blooms Level: 2. Understand Learning Outcome: 06.03

Section: 6.02

Topic: Cells

6-14

Chapter 06 - Interactions Between Cells and the Extracellular Environment

Multiple Choice Questions

35. The rate of diffusion is influenced by

A. the concentration gradient.

B. membrane permeability.

C. membrane surface area.

D. All apply.

Blooms Level: 1. Remember

Learning Outcome: 06.03

Section: 6.02

Topic: Cells

36. Solutes that cannot freely pass through a membrane are said to be

A. hypertonic.

B. osmotically inactive.

C. osmotically active.

D. selectively permeable.

Blooms Level: 1. Remember

Learning Outcome: 06.04

Section: 6.02

Topic: Cells

37. Which of the following cells do NOT normally have many aquaporins in their plasma membranes?

A. kidneys

B. lungs

C. salivary glands

D. skin Blooms Level: 2. Understand

Learning Outcome: 06.04

Section: 6.02

Topic: Cells

6-15

Chapter 06 - Interactions Between Cells and the Extracellular Environment

True / False Questions

38. Because the kidneys are so important for water balance, the plasma membranes of kidney cells have many permanent aquaporins.

FALSE Blooms Level: 2. Understand Learning Outcome: 06.04

Section: 6.02

Topic: Cells

39. The osmotic pressure exerted by a cell would decrease if the cell synthesized more proteins.

FALSE Blooms Level: 2. Understand Learning Outcome: 06.04

Section: 6.02

Topic: Cells

40. Edema will result if a person has an abnormally low concentration of plasma proteins.

TRUE Blooms Level: 2. Understand Learning Outcome: 06.04

Section: 6.02

Topic: Cells

6-16

Chapter 06 - Interactions Between Cells and the Extracellular Environment

Multiple Choice Questions

41. The osmotic pressure of a solution is directly related to its ___________ concentration.

A. water

B. solute

C. solvent

D. matrix

Blooms Level: 1. Remember Learning Outcome: 06.04

Section: 6.02

Topic: Cells

42. Osmotic pressure is a measure of the force needed to

A. open aquaporins.

B. cause osmosis.

C. stop osmosis.

D. stop edema.

Blooms Level: 1. Remember Learning Outcome: 06.04

Section: 6.02

Topic: Cells True / False Questions

43. A one molar solution would contain 6.02  1023 molecules of solute. TRUE

Blooms Level: 1. Remember Learning Outcome: 06.04

Section: 6.02

Topic: Cells

6-17

Chapter 06 - Interactions Between Cells and the Extracellular Environment

Multiple Choice Questions

44. A 0.5M glucose (molecular weight = 180g) contains ____________ grams of glucose per liter.

A. 90

B. 180

C. 6.02  1023

D. 360 Blooms Level: 3. Apply

Learning Outcome: 06.04

Section: 6.02

Topic: Cells

45. A six molar sucrose (molecular weight = 342g) solution would contain

A. 57g sucrose per liter.

B. 342g sucrose per liter.

C. 1026g sucrose per liter.

D. 2052g sucrose per liter.

Blooms Level: 3. Apply

Learning Outcome: 06.04

Section: 6.02

Topic: Cells

6-18

Chapter 06 - Interactions Between Cells and the Extracellular Environment

True / False Questions

46. A one molal NaCl solution has the same osmolality as a one molal glucose solution.

FALSE Blooms Level: 2. Understand

Learning Outcome: 06.04

Section: 6.02

Topic: Cells

Multiple Choice Questions

47. ___________ g of sucrose (molecular weight = 342g) would be added to 1L of water to produce a 2.5 Osm solution.

A. 342

B. 500

C. 855

D. 2.5 Blooms Level: 3. Apply

Learning Outcome: 06.04

Section: 6.02

Topic: Cells

6-19

Chapter 06 - Interactions Between Cells and the Extracellular Environment

True / False Questions

48. One mole of solute per liter depresses the freezing point of water by -1.86C.

TRUE Blooms Level: 1. Remember

Learning Outcome: 06.04

Section: 6.02

Topic: Cells

6-20

Chapter 06 - Interactions Between Cells and the Extracellular Environment

Multiple Choice Questions

49. Plasma freezes at

A. -1.86C.

B. -1.00C.

C. -0.56C.

D. 0.00C.

Blooms Level: 1. Remember

Learning Outcome: 06.04

Section: 6.02

Topic: Cells

50. The osmolality of plasma is

A. 0.3 Osm.

B. 0.1 Osm.

C. 1.0 Osm.

D. 2.0 Osm.

Blooms Level: 1. Remember

Learning Outcome: 06.04

Section: 6.02

Topic: Cells

6-21

Chapter 06 - Interactions Between Cells and the Extracellular Environment

True / False Questions

51. Freezing-point depression is a measure of osmolality.

TRUE

Blooms Level: 1. Remember

Learning Outcome: 06.04

Section: 6.02

Topic: Cells Multiple Choice Questions

52. A solution with an osmolality four times greater than plasma would freeze at __________.

A. -0.56C.

B. -1.12C.

C. -1.68C.

D. -2.24C.

Blooms Level: 3. Apply

Learning Outcome: 06.04

Section: 6.02

Topic: Cells

6-22

Chapter 06 - Interactions Between Cells and the Extracellular Environment

True / False Questions

53. Hypertonic solutions stimulate cellular lysis.

FALSE Blooms Level: 2. Understand

Learning Outcome: 06.05

Section: 6.02

Topic: Cells

54. A 10% dextrose solution is isotonic to plasma.

FALSE Blooms Level: 1. Remember

Learning Outcome: 06.05

Section: 6.02

Topic: Cells Multiple Choice Questions

55. A cell placed in a 9% saline solution (molecular weight = 58.5g) would

A. lyse.

B. crenate.

C. not change.

D. swell. Blooms Level: 2. Understand

Learning Outcome: 06.05

Section: 6.02

Topic: Cells

6-23

Chapter 06 - Interactions Between Cells and the Extracellular Environment

56. The amount of water in a cell placed in a 0.8 Osm solution would

A. decrease.

B. increase.

C. remain constant.

Blooms Level: 2. Understand

Learning Outcome: 06.05

Section: 6.02

Topic: Cells

57. Cells placed in hypotonic solutions will

A. decrease in volume.

B. increase intracellular solute concentration.

C. increase in volume.

D. lose water to the solution.

Blooms Level: 2. Understand

Learning Outcome: 06.05

Section: 6.02

Topic: Cells

58. What type of intravenous fluid would be given to reduce edema?

A. hypertonic

B. isotonic

C. hypotonic

Blooms Level: 2. Understand

Learning Outcome: 06.05

Section: 6.02

Topic: Cells

6-24

Chapter 06 - Interactions Between Cells and the Extracellular Environment

59. Cerebral edema would be treated with a(an) ___________ intravenous solution of mannitol.

A. hypertonic

B. hypotonic

C. isotonic Blooms Level: 2. Understand

Learning Outcome: 06.05

Section: 6.02

Topic: Cells

60. A solution freezing at -1.98C

A. is hypotonic to plasma.

B. is isotonic to plasma.

C. is hypertonic to plasma.

D. is not related to plasma.

Blooms Level: 3. Apply

Learning Outcome: 06.05

Section: 6.02

Topic: Cells True / False Questions

61. Osmoreceptors are involved in the regulation of blood volume. TRUE Blooms Level: 1. Remember

Learning Outcome: 06.06

Section: 6.02

Topic: Cells

6-25

Chapter 06 - Interactions Between Cells and the Extracellular Environment

62. Antidiuretic hormone is released by the posterior pituitary in response to increased plasma osmolality.

TRUE Blooms Level: 1. Remember

Learning Outcome: 06.06

Section: 6.02

Topic: Cells Multiple Choice Questions

63. A 0.1 Osm plasma sample would

A. stimulate the action of osmoreceptors.

B. be hypertonic to the cells.

C. stimulate an increase in blood volume.

D. inhibit the release of antidiuretic hormone.

Blooms Level: 2. Understand

Learning Outcome: 06.06

Section: 6.02

Topic: Cells

64. Which of the following is NOT true of a person who is dehydrated?

A. plasma osmolality increases

B. hypothalamus stimulates release of ADH

C. ADH causes the kidneys to excrete water

D. increased osmolality causes thirst

Blooms Level: 2. Understand

Learning Outcome: 06.06

Section: 6.02

Topic: Cells

6-26

Chapter 06 - Interactions Between Cells and the Extracellular Environment

65. Glycosuria occurs when the ____________ of the renal glucose transport protein is exceeded.

A. transport minimum

B. transport maximum

C. saturation level

D. transport maximum and saturation level

Blooms Level: 1. Remember Learning Outcome: 06.07

Section: 6.03

Topic: Cells

66. Protein carrier mediated transport of molecules display

A. specificity.

B. competition.

C. saturation.

D. All apply. Blooms Level: 1. Remember Learning Outcome: 06.07

Section: 6.03

Topic: Cells

67. The transport maximum is related to the property known as

A. competition.

B. saturation.

C. specificity.

D. inhibition.

Blooms Level: 2. Understand Learning Outcome: 06.07

Section: 6.03

Topic: Cells

6-27

Chapter 06 - Interactions Between Cells and the Extracellular Environment

True / False Questions

68. Glucose entry into the cell is by facilitated diffusion.

TRUE Blooms Level: 1. Remember Learning Outcome: 06.07

Section: 6.03

Topic: Cells

69. Facilitated diffusion is unable to transport molecules against a concentration gradient. TRUE Blooms Level: 1. Remember Learning Outcome: 06.07

Section: 6.03

Topic: Cells

Multiple Choice Questions

70. The glucose carrier of skeletal muscle is designated as

A. GLUT2.

B. GLUTSk.

C. GLUT4.

D. GLUT5. Blooms Level: 1. Remember Learning Outcome: 06.07

Section: 6.03

Topic: Cells

6-28

Chapter 06 - Interactions Between Cells and the Extracellular Environment

71. Facilitated diffusion of a molecule into a cell would be more rapid if

A. the concentration of the molecule in the cell increased.

B. the concentration of water in the cell decreased.

C. the concentration of the molecule outside the cell increased.

D. the cell was isotonic.

Blooms Level: 2. Understand

Learning Outcome: 06.07

Section: 6.03

Topic: Cells

72. Which of the following is NOT true of hypoglycemia?

A. It can result in death.

B. It may be due to diabetes.

C. It is characterized by high plasma glucose levels.

D. It can result in death AND it may be due to diabetes.

Blooms Level: 2. Understand Learning Outcome: 06.07

Section: 6.03

Topic: Cells

73. Glucose transported via the GLUT carrier is characterized as

A. active transport.

B. passive transport.

C. co-transport.

D. receptor-mediated endocytosis.

Blooms Level: 1. Remember

Learning Outcome: 06.07

Section: 6.03

Topic: Cells

6-29

Chapter 06 - Interactions Between Cells and the Extracellular Environment

74. Where are GLUT carriers located in an unstimulated muscle?

A. in the plasma membrane facing the external environment

B. in the plasma membrane facing the internal environment

C. within cytoplasmic vesicles

D. There are no GLUT carriers present.

Blooms Level: 1. Remember Learning Outcome: 06.07

Section: 6.03

Topic: Cells True / False Questions

75. Active transport proteins are often regulated by phosphorylation.

TRUE Blooms Level: 2. Understand Learning Outcome: 06.07

Section: 6.03

Topic: Cells

6-30

Chapter 06 - Interactions Between Cells and the Extracellular Environment

Multiple Choice Questions

76. Which of the following is NOT a primary active transport pump?

A. GLUT4

B. calcium pump

C. sodium/potassium pump

D. proton pump

Blooms Level: 1. Remember Learning Outcome: 06.08

Section: 6.03

Topic: Cells

77. Active transport carriers are also called

A. vesicles.

B. channels.

C. pumps.

D. receptors.

Blooms Level: 1. Remember Learning Outcome: 06.08

Section: 6.03

Topic: Cells True / False Questions

78. The calcium pump is also an ATPase enzyme.

TRUE

Blooms Level: 1. Remember Learning Outcome: 06.08

Section: 6.03

Topic: Cells

6-31

Chapter 06 - Interactions Between Cells and the Extracellular Environment

6-32

Chapter 06 - Interactions Between Cells and the Extracellular Environment

Multiple Choice Questions

79. The ATPase enzyme

A. adds a Pi to ADP.

B. powers endocytosis.

C. couples Na+ to glucose.

D. hydrolyzes ATP into ADP and Pi.

Blooms Level: 1. Remember

Learning Outcome: 06.08

Section: 6.03

Topic: Cells

80. The Na+/K+ pump transports _______ into the cell and ________ out of the cell per cycle.

A. 3Na+, 2K+

B. 2Na+, 3K+

C. 3K+, 2Na+

D. 2K+, 3Na+

Blooms Level: 1. Remember

Learning Outcome: 06.08

Section: 6.03

Topic: Cells

6-33

Chapter 06 - Interactions Between Cells and the Extracellular Environment

81. The Na+/K+ pump

A. is an example of primary active transport.

B. generates a positive membrane potential.

C. actively transports 2 potassium ions out of the cell.

D. actively transports 3 sodium ions into the cell.

Blooms Level: 1. Remember

Learning Outcome: 06.08

Section: 6.03

Topic: Cells

6-34

Chapter 06 - Interactions Between Cells and the Extracellular Environment

82. Which of the following is a function of the steep Na+/K+ gradient across the cell membrane?

A. provides energy for coupled transport

B. creates electrochemical impulses

C. maintains osmotic pressure

D. All apply.

Blooms Level: 1. Remember

Learning Outcome: 06.08

Section: 6.03

Topic: Cells True / False Questions

83. Secondary active transport often occurs as a coupled transport process.

TRUE Blooms Level: 1. Remember Learning Outcome: 06.08

Section: 6.03

Topic: Cells

6-35

Chapter 06 - Interactions Between Cells and the Extracellular Environment

Multiple Choice Questions

84. In secondary active transport, if the other substance is moved in the same direction as Na+, it is called

A. cotransport.

B. symport.

C. antiport.

D. cotransport AND symport.

Blooms Level: 1. Remember

Learning Outcome: 06.08

Section: 6.03

Topic: Cells

85. Poisoning the Na+/K+ pump would cause the volume of the cell to __________.

A. increase

B. decrease

C. remain the same

Blooms Level: 2. Understand

Learning Outcome: 06.08

Section: 6.03

Topic: Cells

True / False Questions

86. In the Na+/K+ pump, three sodium ions from inside the cell must enter the carrier first.

TRUE Blooms Level: 1. Remember

Learning Outcome: 06.08

Section: 6.03

Topic: Cells

6-36

Chapter 06 - Interactions Between Cells and the Extracellular Environment

Multiple Choice Questions

87. The transport of molecules out of the urinary filtrate and into the blood is called

A. absorption.

B. reabsorption.

C. countertransport.

D. symport.

Blooms Level: 1. Remember

Learning Outcome: 06.08

Section: 6.03

Topic: Cells

88. The transport of amino acids across epithelial membranes requires the

A. Na+/K+ pump.

B. Ca2+ pump.

C. Na+/H+ pump.

D. facilitated diffusion.

Blooms Level: 1. Remember

Learning Outcome: 06.08

Section: 6.03

Topic: Cells

6-37

Chapter 06 - Interactions Between Cells and the Extracellular Environment

89. Secondary active transport

A. utilizes energy directly.

B. often utilizes symport proteins.

C. always uses the influx of sodium ions.

D. is only important in the kidney.

Blooms Level: 1. Remember

Learning Outcome: 06.08

Section: 6.03

Topic: Cells

6-38

Chapter 06 - Interactions Between Cells and the Extracellular Environment

90. Poisoning the Na+/K+ pump would

A. generate a more negative membrane potential.

B. increase cellular permeability to Na+ .

C. inhibit secondary active transport.

D. increase cellular permeability to K+

Blooms Level: 2. Understand

Learning Outcome: 06.08

Section: 6.03

Topic: Cells True / False Questions

91. Desmosomes are a type of junctional complex. TRUE Blooms Level: 1. Remember Learning Outcome: 06.08

Section: 6.03

Topic: Cells

6-39

Multiple Choice Questions

92. What type of junctional complex will prohibit paracellular transport?

A. tight junctions

B. adherens junctions

C. desmosomes

D. gap junctions

Blooms Level: 2. Understand

Learning Outcome: 06.08

Section: 6.03

Topic: Cells

93. Transport of materials through an epithelial cell is called

A. paracellular transport.

B. transcellular transport.

C. bulk transport.

D. exocytosis.

Blooms Level: 1. Remember

Learning Outcome: 06.08

Section: 6.03

Topic: Cells

94. Which of the following is true of oral rehydration therapy?

A. It is used to treat severe diarrhea.

B. The presence of glucose aids the intestinal absorption of Na+ and water.

C. It saves more than a million small children per year.

D. All apply.

Blooms Level: 1. Remember

Learning Outcome: 06.08

Section: 6.03

Topic: Cells

6-40

Chapter 06 - Interactions Between Cells and the Extracellular Environment

True / False Questions

95. ORT is based on understanding transport mechanisms and junctional complexes.

FALSE Blooms Level: 2. Understand Learning Outcome: 06.08

Section: 6.03

Topic: Cells

96. Bulk transport is required for the transport of large polar molecules into or out of cells.

TRUE Blooms Level: 1. Remember

Learning Outcome: 06.08

Section: 6.03

Topic: Cells

Multiple Choice Questions

97. Inhibition of receptor-mediated endocytosis

A. could induce hypercholesteremia.

B. could induce diabetes mellitus.

C. could prevent diabetes mellitus.

D. could prevent heart disease.

Blooms Level: 2. Understand Learning Outcome: 06.08

Section: 6.03

Topic: Cells

6-41

Chapter 06 - Interactions Between Cells and the Extracellular Environment

98. Movement of large molecules into a cell is called

A. endocytosis.

B. exocytosis.

C. bulk transport.

D. endocytosis AND bulk transport.

Blooms Level: 1. Remember Learning Outcome: 06.08

Section: 6.03

Topic: Cells True / False Questions

99. Epithelial cells have a polarity dealing with transport.

TRUE Blooms Level: 1. Remember Learning Outcome: 06.08

Section: 6.03

Topic: Cells

100. The charge difference across a membrane produces the membrane potential.

TRUE Blooms Level: 1. Remember Learning Outcome: 06.09

Section: 6.04

Topic: Cells

6-42

Chapter 06 - Interactions Between Cells and the Extracellular Environment

Multiple Choice Questions

101. The Na+/K+ pump creates a ____________ charge inside the cell.

A. positive

B. negative Blooms Level: 1. Remember

Learning Outcome: 06.09

Section: 6.04

Topic: Cells

102. The primary intracellular cation is

A. Ca2+ .

B. K+ .

C. Mg2+

D. Na+ . Blooms Level: 1. Remember Learning Outcome: 06.09

Section: 6.04

Topic: Cells

103. The sodium equilibrium potential using an extracellular Na+ concentration of 145 mEq/L and an intracellular concentration of 14 mEq/L would be about

A. -90mV.

B. +62mV.

C. -62mV.

D. +90mV.

Blooms Level: 3. Apply Learning Outcome: 06.09

Section: 6.04

Topic: Cells

6-43

Chapter 06 - Interactions Between Cells and the Extracellular Environment

104. The resting membrane potential is closest to the equilibrium potential for

A. sodium ions.

B. chloride ions.

C. calcium ions.

D. potassium ions. Blooms Level: 1. Remember Learning Outcome: 06.09

Section: 6.04

Topic: Cells

105. If the intracellular concentration of Ca2+ was 10mEq/L and the extracellular concentration was 150mEq/L, the Ca2+ equilibrium potential would be

A. -35.9mV.

B. -71.8mV.

C. +35.9mV.

D. +71.8mV. Blooms Level: 3. Apply Learning Outcome: 06.09

Section: 6.04

Topic: Cells

106. Whose equation allows one to calculate equilibrium potential for a particular ion?

A. Avogadro's

B. Nernst's

C. Fox's

D. Dalton's Blooms Level: 1. Remember Learning Outcome: 06.09

Section: 6.04

Topic: Cells

6-44

Chapter 06 - Interactions Between Cells and the Extracellular Environment

107. Hyperkalemia would ____________ the resting membrane potential of the cell.

A. increase

B. decrease

C. have no effect on

Blooms Level: 2. Understand Learning Outcome: 06.10

Section: 6.04

Topic: Cells

108. Most cells have a resting membrane potential between

A. +60mV and -90mV.

B. -60mV and -90mV.

C. -65mV and -85mV.

D. +65mV and +90mV.

Blooms Level: 1. Remember Learning Outcome: 06.10

Section: 6.04

Topic: Cells

109. The Na+/K+ pump

A. establishes equilibrium concentrations of sodium and potassium ions.

B. is an electrogenic pump.

C. is an example of secondary active transport.

D. interferes with glucose transport.

Blooms Level: 1. Remember Learning Outcome: 06.10

Section: 6.04

Topic: Cells

6-45