Question 1

The function of adenosine triphosphate (ATP)is to store energy in molecules of carbohydrates,proteins and lipids,but not to transfer energy from one molecule to another.

Accepted Answer

A) True 
 B)False

Question 2

What is the name of the method of transport that uses transmembrane proteins with receptors that have a high degree of specificity for the substance being transported?

Accepted Answer

A)  Active transport 
B)  Mediated transport 
C)  Transmembranous transport 
D)  Passive transport 
A)  Active transport 
B)  Mediated transport 
C)  Transmembranous transport 
D)  Passive transport

Question 3

What is the action of platelet-derived growth factor? It stimulates production of:

Accepted Answer

A)  platelets. 
B)  epidermal cells. 
C)  connective tissue cells. 
D)  fibroblast cells. 
A)  platelets. 
B)  epidermal cells. 
C)  connective tissue cells. 
D)  fibroblast cells.

Question 4

What organic compound facilitates transportation across cell membranes by acting as receptors,transport channels for electrolytes,and enzymes to drive active pumps?

Accepted Answer

A)  Lipids 
B)  Proteolytic cascade 
C)  Proteins 
D)  Carbohydrates 
A)  Lipids 
B)  Proteolytic cascade 
C)  Proteins 
D)  Carbohydrates

Question 5

Active transport occurs across membranes that:

Accepted Answer

A)  have a higher concentration of the solute on the outside of the cell. 
B)  are semipermeable to water and small electrically uncharged molecules. 
C)  have receptors that are capable of binding with the substances to be transported. 
D)  have a cell membrane that is hydrophobic rather than hydrophilic. 
A)  have a higher concentration of the solute on the outside of the cell. 
B)  are semipermeable to water and small electrically uncharged molecules. 
C)  have receptors that are capable of binding with the substances to be transported. 
D)  have a cell membrane that is hydrophobic rather than hydrophilic.

Question 6

All body cells are electrically polarized with the inside of the cell being more negatively charged than the outside.

Accepted Answer

A) True 
 B)False

Question 7

How are potassium and sodium transported across plasma membranes?

Accepted Answer

A)  By passive electrolyte channels 
B)  By coupled channels 
C)  By adenosine triphosphate enzyme (ATPase) 
D)  By diffusion 
A)  By passive electrolyte channels 
B)  By coupled channels 
C)  By adenosine triphosphate enzyme (ATPase) 
D)  By diffusion

Question 8

Eukaryotic cells are characterized by a lack of a distinct nucleus,whereas prokaryotic cells have intracellular compartments bordered by membranes and a well-defined nucleus.

Accepted Answer

A) True 
 B)False

Question 9

Diffusion is an example of active transport.

Accepted Answer

A) True 
 B)False

Question 10

When a second message is necessary for extracellular communication to be activated,it is provided by:

Accepted Answer

A)  guanosine triphosphate (GTP). 
B)  adenosine monophosphate (AMP). 
C)  adenosine triphosphate (ATP). 
D)  guanosine diphosphate (GDP). 
A)  guanosine triphosphate (GTP). 
B)  adenosine monophosphate (AMP). 
C)  adenosine triphosphate (ATP). 
D)  guanosine diphosphate (GDP).

Question 11

Why is "osmolality" preferred over "osmolarity" as the measurement of osmotic activity in the clinical assessment of individuals?

Accepted Answer

A)  Because plasma contains sodium and chloride,which influence the volume of solution 
B)  Because the volume affects perfusion more than the weight of solutes 
C)  Because more of the weight of plasma is influenced by solutes,such as protein and glucose,rather than by water 
D)  Because osmotic activity depends on the concentration of solutes present in plasma,such as proteins and glucose 
A)  Because plasma contains sodium and chloride,which influence the volume of solution 
B)  Because the volume affects perfusion more than the weight of solutes 
C)  Because more of the weight of plasma is influenced by solutes,such as protein and glucose,rather than by water 
D)  Because osmotic activity depends on the concentration of solutes present in plasma,such as proteins and glucose

Question 12

Which of the following 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 13

MATCHING
Match the structure with its function.(Answers A through E may be used more than once. )
-Synthesizes and transports lipids

Accepted Answer

A) Endoplasmic reticulum 
B) Ribosome 
C) Golgi complex 
D) Secretory vesicle 
E) Lysosomes 
A) Endoplasmic reticulum 
B) Ribosome 
C) Golgi complex 
D) Secretory vesicle 
E) Lysosomes

Question 14

MATCHING
Match the structure with its function.(Answers A through E may be used more than once. )
-Packages and transports proteins

Accepted Answer

A) Endoplasmic reticulum 
B) Ribosome 
C) Golgi complex 
D) Secretory vesicle 
E) Lysosomes 
A) Endoplasmic reticulum 
B) Ribosome 
C) Golgi complex 
D) Secretory vesicle 
E) Lysosomes

Exam 1: Cellular Biology

The function of adenosine triphosphate (ATP)is to store energy in molecules of carbohydrates,proteins and lipids,but not to transfer energy from one molecule to another.

What is the name of the method of transport that uses transmembrane proteins with receptors that have a high degree of specificity for the substance being transported?

What is the action of platelet-derived growth factor? It stimulates production of:

What organic compound facilitates transportation across cell membranes by acting as receptors,transport channels for electrolytes,and enzymes to drive active pumps?

Active transport occurs across membranes that:

All body cells are electrically polarized with the inside of the cell being more negatively charged than the outside.

How are potassium and sodium transported across plasma membranes?

Eukaryotic cells are characterized by a lack of a distinct nucleus,whereas prokaryotic cells have intracellular compartments bordered by membranes and a well-defined nucleus.

Diffusion is an example of active transport.

When a second message is necessary for extracellular communication to be activated,it is provided by:

Why is "osmolality" preferred over "osmolarity" as the measurement of osmotic activity in the clinical assessment of individuals?

Which of the following best describes the cellular function of metabolic absorption?

MATCHING Match the structure with its function.(Answers A through E may be used more than once. ) -Synthesizes and transports lipids

MATCHING Match the structure with its function.(Answers A through E may be used more than once. ) -Packages and transports proteins

Altered Cellular and Tissue Biology

The Cellular Environment

Genes and Genetic Diseases

Genes, Environment-Lifestyle, and Common Diseases

Innate Immunity Including Inflammation

Adaptive Immunity

Alterations in Immunity and Inflammation Including Hypersensitivies

Infection Including Hivaids

Stress and Disease

Biology of Cancer

Tumor Invasion and Metastasis

Cancer in Children

Structure and Function of the Neurologic System

Pain, Temperature Regulation, Sleep, and Sensory Function

Concepts of Neurologic Dysfunction

Disorders of Neurologic Function

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 Reproductive Systems

Sexually Transmitted Infections

Structure and Function of the Hematologic System

Alterations of Erythrocyte Function

Alterations in 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

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

Alterations of Leukocyte, Lymphoid, and Hemostatic Function

Alterations of Pulmonary Function in Children

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