Question 1

What are the major chemical components of the cell membranes? (Select all that apply.)

Accepted Answer

A)  Lipids 
B)  Sodium ions 
C)  Carbohydrates 
D)  DNA 
E)  Proteins 
A)  Lipids 
B)  Sodium ions 
C)  Carbohydrates 
D)  DNA 
E)  Proteins A,E

Question 2

The fluid mosaic model explains:

Accepted Answer

A)  How a cell membrane functions 
B)  Why our bodies appear to be solid 
C)  How tissue is differentiated 
D)  How fluid moves between the intracellular and extracellular compartments 
A)  How a cell membrane functions 
B)  Why our bodies appear to be solid 
C)  How tissue is differentiated 
D)  How fluid moves between the intracellular and extracellular compartments A

Question 3

Match the structure with its function.Answers may be used more than once.
-Fuses with the plasma membrane to release contents from the cell.

Accepted Answer

A) Endoplasmic reticulum 
B) Ribosome 
C) Secretory vesicle 
D) Lysosomes 
A) Endoplasmic reticulum 
B) Ribosome 
C) Secretory vesicle 
D) Lysosomes C

Question 4

What is the sequence of steps in the development of a digestive enzyme by the pancreas cells from the initial transcription to the release from the cell?

Accepted Answer

A)  The enzyme is transcribed from DNA by RNA in the nucleus, proceeds to the ribosome for synthesis, and is transported in a secretory vesicle to the cell membrane. 
B)  The enzyme is transcribed from RNA by DNA in the nucleus, proceeds to the lysosome for synthesis, and is transported in an encapsulated membrane to the cell membrane. 
C)  The enzyme is transcribed by the mitochondria in the nucleus, proceeds to the ribosome for synthesis, and is transported in a cytoskeleton to the cell membrane. 
D)  The enzyme is transcribed from DNA by RNA in the nucleus, proceeds to the Golgi complex for synthesis, and is transported in a cytosol to the cell membrane. 
A)  The enzyme is transcribed from DNA by RNA in the nucleus, proceeds to the ribosome for synthesis, and is transported in a secretory vesicle to the cell membrane. 
B)  The enzyme is transcribed from RNA by DNA in the nucleus, proceeds to the lysosome for synthesis, and is transported in an encapsulated membrane to the cell membrane. 
C)  The enzyme is transcribed by the mitochondria in the nucleus, proceeds to the ribosome for synthesis, and is transported in a cytoskeleton to the cell membrane. 
D)  The enzyme is transcribed from DNA by RNA in the nucleus, proceeds to the Golgi complex for synthesis, and is transported in a cytosol to the cell membrane.

Question 5

What causes the rapid change in the resting membrane potential to initiate an action potential?

Accepted Answer

A)  Potassium gates open, and potassium rushes into the cell, changing the membrane potential from negative to positive. 
B)  Sodium gates open, and sodium rushes into the cell, changing the membrane potential from negative to positive. 
C)  Sodium gates close, allowing potassium into the cell to change the membrane potential from positive to negative. 
D)  Potassium gates close, allowing sodium into the cell to change the membrane potential from positive to negative. 
A)  Potassium gates open, and potassium rushes into the cell, changing the membrane potential from negative to positive. 
B)  Sodium gates open, and sodium rushes into the cell, changing the membrane potential from negative to positive. 
C)  Sodium gates close, allowing potassium into the cell to change the membrane potential from positive to negative. 
D)  Potassium gates close, allowing sodium into the cell to change the membrane potential from positive to negative.

Question 6

Which statements are true concerning the process of facilitated diffusion? (Select all that apply).

Accepted Answer

A)  Facilitated diffusion is also referred to as passive mediated transport. 
B)  This process expends no metabolic energy. 
C)  Moving solute molecules through cellular membranes are involved in this process. 
D)  Movement up a concentration gradient is necessary. 
E)  Facilitated diffusion is the primary means for water transport. 
A)  Facilitated diffusion is also referred to as passive mediated transport. 
B)  This process expends no metabolic energy. 
C)  Moving solute molecules through cellular membranes are involved in this process. 
D)  Movement up a concentration gradient is necessary. 
E)  Facilitated diffusion is the primary means for water transport.

Question 7

Which mode of chemical signaling uses blood to transport communication to cells some distance away?

Accepted Answer

A)  Paracrine 
B)  Autocrine 
C)  Neurotransmitter 
D)  Hormonal 
A)  Paracrine 
B)  Autocrine 
C)  Neurotransmitter 
D)  Hormonal

Question 8

Passive transport is dependent on: (Select all that apply.)

Accepted Answer

A)  Semipermeable barrier membrane 
B)  The process of osmosis 
C)  Diffusion as a driving force 
D)  A living host 
E)  Hydrostatic pressure 
A)  Semipermeable barrier membrane 
B)  The process of osmosis 
C)  Diffusion as a driving force 
D)  A living host 
E)  Hydrostatic pressure

Question 9

Which cells lose their ability to replicate and divide? (Select all that apply.)

Accepted Answer

A)  Intestines 
B)  Nerves 
C)  Skin 
D)  Lens of the eye 
E)  Skeletal muscle 
A)  Intestines 
B)  Nerves 
C)  Skin 
D)  Lens of the eye 
E)  Skeletal muscle

Question 10

The transport of glucose from the blood to the cell is accomplished by which process?

Accepted Answer

A)  Active-mediated transport (active transport) 
B)  Active diffusion 
C)  Passive osmosis 
D)  Passive-mediated transport (facilitated diffusion) 
A)  Active-mediated transport (active transport) 
B)  Active diffusion 
C)  Passive osmosis 
D)  Passive-mediated transport (facilitated diffusion)

Question 11

The movement of fluid across the arterial end of capillary membranes into the interstitial fluid surrounding the capillary is an example of which fluid movement process?

Accepted Answer

A)  Hydrostatic pressure 
B)  Osmosis 
C)  Diffusion 
D)  Active transport 
A)  Hydrostatic pressure 
B)  Osmosis 
C)  Diffusion 
D)  Active transport

Question 12

Match the structure with its function.Answers may be used more than once.
-Facilitated diffusion

Accepted Answer

A) Passive-mediated transport 
B) Active-mediated transport 
C) Osmosis 
A) Passive-mediated transport 
B) Active-mediated transport 
C) Osmosis

Question 13

A patient who has diarrhea receives a 3% saline solution intravenously to replace the sodium and chloride lost in the stool.What effect will this fluid replacement have on cells?

Accepted Answer

A)  Become hydrated 
B)  Swell or burst 
C)  Shrink 
D)  Divide 
A)  Become hydrated 
B)  Swell or burst 
C)  Shrink 
D)  Divide

Question 14

During which phase of the cell cycle is DNA synthesized?

Accepted Answer

A)  G1 
B)  S 
C)  G2 
D)  M 
A)  G1 
B)  S 
C)  G2 
D)  M

Question 15

Match the structure with its function.Answers may be used more than once.
-Protein carrier

Accepted Answer

A) Passive-mediated transport 
B) Active-mediated transport 
C) Osmosis 
A) Passive-mediated transport 
B) Active-mediated transport 
C) Osmosis

Question 16

Which cell component is capable of cellular autodigestion when it is released during cell injury?

Accepted Answer

A)  Ribosome 
B)  Golgi complex 
C)  Smooth endoplasmic reticulum 
D)  Lysosomes 
A)  Ribosome 
B)  Golgi complex 
C)  Smooth endoplasmic reticulum 
D)  Lysosomes

Question 17

Match the structure with its function.Answers may be used more than once.
-Synthesizes and transports lipids.

Accepted Answer

A) Endoplasmic reticulum 
B) Ribosome 
C) Secretory vesicle 
D) Lysosomes 
A) Endoplasmic reticulum 
B) Ribosome 
C) Secretory vesicle 
D) Lysosomes

Question 18

Why is it possible for potassium to diffuse easily into and out of cells?

Accepted Answer

A)  Potassium has a greater concentration in the intracellular fluid (ICF). 
B)  Sodium has a greater concentration in the extracellular fluid (ECF). 
C)  The resting plasma membrane is more permeable to potassium. 
D)  An excess of anions are inside the cell. 
A)  Potassium has a greater concentration in the intracellular fluid (ICF). 
B)  Sodium has a greater concentration in the extracellular fluid (ECF). 
C)  The resting plasma membrane is more permeable to potassium. 
D)  An excess of anions are inside the cell.

Question 19

Which statement best describes the cellular function of metabolic absorption?

Accepted Answer

A)  Cells can produce proteins. 
B)  Cells can secrete digestive enzymes. 
C)  Cells can take in and use nutrients. 
D)  Cells can synthesize fats. 
A)  Cells can produce proteins. 
B)  Cells can secrete digestive enzymes. 
C)  Cells can take in and use nutrients. 
D)  Cells can synthesize fats.

Question 20

What occurs during exocytosis?

Accepted Answer

A)  Macromolecules can be secreted across eukaryotic cell membranes. 
B)  All substances are secreted into the cellular matrix. 
C)  No repairs in the plasma membrane can take place. 
D)  Solute molecules flow freely into and out of the cell. 
A)  Macromolecules can be secreted across eukaryotic cell membranes. 
B)  All substances are secreted into the cellular matrix. 
C)  No repairs in the plasma membrane can take place. 
D)  Solute molecules flow freely into and out of the cell.

Exam 1: Cellular Biology

What are the major chemical components of the cell membranes? (Select all that apply.)

The fluid mosaic model explains:

Match the structure with its function.Answers may be used more than once. -Fuses with the plasma membrane to release contents from the cell.

What is the sequence of steps in the development of a digestive enzyme by the pancreas cells from the initial transcription to the release from the cell?

What causes the rapid change in the resting membrane potential to initiate an action potential?

Which statements are true concerning the process of facilitated diffusion? (Select all that apply).

Which mode of chemical signaling uses blood to transport communication to cells some distance away?

Passive transport is dependent on: (Select all that apply.)

Which cells lose their ability to replicate and divide? (Select all that apply.)

The transport of glucose from the blood to the cell is accomplished by which process?

The movement of fluid across the arterial end of capillary membranes into the interstitial fluid surrounding the capillary is an example of which fluid movement process?

Match the structure with its function.Answers may be used more than once. -Facilitated diffusion

A patient who has diarrhea receives a 3% saline solution intravenously to replace the sodium and chloride lost in the stool.What effect will this fluid replacement have on cells?

During which phase of the cell cycle is DNA synthesized?

Match the structure with its function.Answers may be used more than once. -Protein carrier

Which cell component is capable of cellular autodigestion when it is released during cell injury?

Match the structure with its function.Answers may be used more than once. -Synthesizes and transports lipids.

Why is it possible for potassium to diffuse easily into and out of cells?

Which statement best describes the cellular function of metabolic absorption?

What occurs during exocytosis?

Altered Cellular and Tissue Biology

The Cellular Environment: Fluids and Electrolytes, Acids and Bases

Genes and Genetic Diseases

Genes, Environment-Lifestyle, and Common Diseases

Epigenetics and Disease

Innate Immunity: Inflammation

Adaptive Immunity

Alterations in Immunity and Inflammation

Infection

Stress and Disease

Cancer Biology

Cancer Epidemiology

Cancer in Children

Structure and Function of the Neurologic System

Pain, Temperature Regulation, Sleep, and Sensory Function

Alterations in Cognitive Systems,Cerebral Hemodynamics,and Motor Function

Disorders of the Central and Peripheral Nervous Systems and the Neuromuscular Junction

Neurobiology of Schizophrenia, Mood Disorders, and Anxiety Disorders

Alterations of Neurologic Function in Children

Mechanisms of Hormonal Regulation

Alterations of Hormonal Regulation

Structure and Function of the Reproductive Systems

Alterations of the Female Reproductive System

Alterations of the Male Reproductive System

Sexually Transmitted Infections

Structure and Function of the Hematologic System

Alterations of Erythrocyte Function

Alterations of Leukocyte, Lymphoid, and Hemostatic Function

Alterations of Hematologic Function in Children

Structure and Function of the Cardiovascular and Lymphatic Systems

Alterations of Cardiovascular Function

Alterations of Cardiovascular Function in Children

Structure and Function of the Pulmonary System

Alterations of Pulmonary Function

Alterations of Pulmonary Function in Children

Structure and Function of the Renal and Urologic Systems

Alterations of Renal and Urinary Tract Function

Alterations of Renal and Urinary Tract Function in Children

Structure and Function of the Digestive System

Alterations of Digestive Function

Alterations of Digestive Function in Children

Structure and Function of the Musculoskeletal System

Alterations of Musculoskeletal Function

Alterations of Musculoskeletal Function in Children

Structure, Function, and Disorders of the Integument

Alterations of the Integument in Children

Shock, Multiple Organ Dysfunction Syndrome, and Burns in Adults

Shock, Multiple Organ Dysfunction Syndrome, and Burns in Children

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