Question 1

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

Accepted Answer

A) provides energy for coupled transport 
B) creates electrochemical impulses 
C) maintains osmotic pressure 
D) All apply. 
A) provides energy for coupled transport 
B) creates electrochemical impulses 
C) maintains osmotic pressure 
D) All apply.

Question 2

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

Accepted Answer

A) hypertonic. 
B) osmotically inactive. 
C) osmotically active. 
D) selectively permeable. 
A) hypertonic. 
B) osmotically inactive. 
C) osmotically active. 
D) selectively permeable.

Question 3

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

Accepted Answer

A) True 
 B)False

Question 4

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

Accepted Answer

A) lyse. 
B) crenate. 
C) not change. 
D) swell. 
A) lyse. 
B) crenate. 
C) not change. 
D) swell.

Question 5

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

Accepted Answer

A) decrease. 
B) increase. 
C) remain constant. 
A) decrease. 
B) increase. 
C) remain constant.

Question 6

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

Accepted Answer

A) O2 
B) small charged particles 
C) large polar molecules 
D) All apply. 
A) O2 
B) small charged particles 
C) large polar molecules 
D) All apply.

Question 7

A solution freezing at -1.98F1F1F1S1F1F1F10C

Accepted Answer

A) is hypotonic to plasmA. 
B) is isotonic to plasma. 
C) is hypertonic to plasma. 
D) is not related to plasma. 
A) is hypotonic to plasmA. 
B) is isotonic to plasma. 
C) is hypertonic to plasma. 
D) is not related to plasma.

Question 8

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

Accepted Answer

A) 57g sucrose per liter. 
B) 342g sucrose per liter. 
C) 1026g sucrose per liter. 
D) 2052g sucrose per liter. 
A) 57g sucrose per liter. 
B) 342g sucrose per liter. 
C) 1026g sucrose per liter. 
D) 2052g sucrose per liter.

Question 9

Osmosis and simple diffusion do NOT require the actions of carrier proteins.

Accepted Answer

A) True 
 B)False

Question 10

Where is the receptor for a nonpolar,lipid-soluble regulatory molecule?

Accepted Answer

A) embedded in the outer surface of the plasma membrane 
B) embedded in the inner surface of the plasma membrane 
C) in the cytoplasm or nucleus of the cell 
D) All apply. 
A) embedded in the outer surface of the plasma membrane 
B) embedded in the inner surface of the plasma membrane 
C) in the cytoplasm or nucleus of the cell 
D) All apply.

Question 11

Individuals suffering from cystic fibrosis have defective ____________ ion channels.

Accepted Answer

A) sodium 
B) potassium 
C) calcium 
D) chloride 
A) sodium 
B) potassium 
C) calcium 
D) chloride

Question 12

The rate of diffusion increases as the concentration gradient increases.

Accepted Answer

A) True 
 B)False

Question 13

Which of the following is true of oral rehydration therapy?

Accepted Answer

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. 
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.

Question 14

What is necessary for a target cell to respond to a cell signaling molecule?

Accepted Answer

A) being close together 
B) a second messenger 
C) specific receptor proteins 
D) All apply. 
A) being close together 
B) a second messenger 
C) specific receptor proteins 
D) All apply.

Question 15

Which regulatory molecule cannot enter its target cell?

Accepted Answer

A) epinephrine 
B) acetylcholine 
C) nitric oxide 
D) epinephrine AND acetylcholine 
A) epinephrine 
B) acetylcholine 
C) nitric oxide 
D) epinephrine AND acetylcholine

Question 16

Hyperkalemia would ____________ the resting membrane potential of the cell.

Accepted Answer

A) increase 
B) decrease 
C) have no effect on 
A) increase 
B) decrease 
C) have no effect on

Question 17

Transport of materials through an epithelial cell is called

Accepted Answer

A) paracellular transport. 
B) transcellular transport. 
C) bulk transport. 
D) exocytosis. 
A) paracellular transport. 
B) transcellular transport. 
C) bulk transport. 
D) exocytosis.

Question 18

What cofactor do matrix metalloproteinases need to be functional?

Accepted Answer

A) calcium 
B) copper 
C) chromium 
D) zinc 
A) calcium 
B) copper 
C) chromium 
D) zinc

Question 19

Which of the following is NOT a G-protein?

Accepted Answer

A) alpha 
B) beta 
C) delta 
D) gamma 
A) alpha 
B) beta 
C) delta 
D) gamma

Question 20

The osmolality of plasma is

Accepted Answer

A) 0.3 Osm. 
B) 0.1 Osm. 
C) 1.0 Osm. 
D) 2.0 Osm. 
A) 0.3 Osm. 
B) 0.1 Osm. 
C) 1.0 Osm. 
D) 2.0 Osm.

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

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

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

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

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

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

A solution freezing at -1.98^C

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

Osmosis and simple diffusion do NOT require the actions of carrier proteins.

Where is the receptor for a nonpolar,lipid-soluble regulatory molecule?

Individuals suffering from cystic fibrosis have defective ____________ ion channels.

The rate of diffusion increases as the concentration gradient increases.

Which of the following is true of oral rehydration therapy?

What is necessary for a target cell to respond to a cell signaling molecule?

Which regulatory molecule cannot enter its target cell?

Hyperkalemia would ____________ the resting membrane potential of the cell.

Transport of materials through an epithelial cell is called

What cofactor do matrix metalloproteinases need to be functional?

Which of the following is NOT a G-protein?

The osmolality of plasma is

The Study of Body Function

Chemical Composition of the Body

Cell Structure and Genetic Control

Enzymes and Energy

Cell Respiration and Metabolism

The Nervous System: Neurons and Synapses

The Central Nervous System

The Autonomic Nervous System

Sensory Physiology

Endocrine Glands: Secretion and Action of Hormones

Muscle: Mechanisms of Contraction and Neural Control

Blood,Heart and Circulation

Cardiac Output,Blood Flow,and Blood Pressure

The Immune System

Respiratory Physiology

Physiology of the Kidneys

The Digestive System

Regulation and Metabolism

Reproduction

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Exam 6: Interactions Between Cells and the Extracellular Environment

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

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

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

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

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

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

A solution freezing at -1.98C

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

Osmosis and simple diffusion do NOT require the actions of carrier proteins.

Where is the receptor for a nonpolar,lipid-soluble regulatory molecule?

Individuals suffering from cystic fibrosis have defective ____________ ion channels.

The rate of diffusion increases as the concentration gradient increases.

Which of the following is true of oral rehydration therapy?

What is necessary for a target cell to respond to a cell signaling molecule?

Which regulatory molecule cannot enter its target cell?

Hyperkalemia would ____________ the resting membrane potential of the cell.

Transport of materials through an epithelial cell is called

What cofactor do matrix metalloproteinases need to be functional?

Which of the following is NOT a G-protein?

The osmolality of plasma is

The Study of Body Function

Chemical Composition of the Body

Cell Structure and Genetic Control

Enzymes and Energy

Cell Respiration and Metabolism

The Nervous System: Neurons and Synapses

The Central Nervous System

The Autonomic Nervous System

Sensory Physiology

Endocrine Glands: Secretion and Action of Hormones

Muscle: Mechanisms of Contraction and Neural Control

Blood,Heart and Circulation

Cardiac Output,Blood Flow,and Blood Pressure

The Immune System

Respiratory Physiology

Physiology of the Kidneys

The Digestive System

Regulation and Metabolism

Reproduction

Filters

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

A solution freezing at -1.98^C