Question 1

Which cAMP-mediated response is related to antidiuretic hormone?

Accepted Answer

A)  Increased heart rate and force of contraction
B)  Secretion of cortisol
C)  Increased retention of water
D)  Breakdown of fatE) B) and C)
F) A) and C)

Question 2

Passive transport is best described with which statement?

Accepted Answer

A)  Being driven by osmosis, hydrostatic pressure, and diffusion
B)  Involving receptors that can bind with substances being transported
C)  Being capable of transporting macromolecules
D)  Requiring energy generated by the cellE) C) and D)
F) B) and D)

Question 3

Which is the best example of active transport?

Accepted Answer

A)  Movement across a membrane due to differences in solute concentration
B)  Movement requiring the expenditure of metabolic energy
C)  Movement of two molecules simultaneously in one direction
D)  Movement of two molecules simultaneously in opposite directionsE) B) and D)
F) A) and D) B

Question 4

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)  ProteinsF) D) and E)
G) B) and E)

Question 5

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.E) B) and C)
F) A) and B)

Question 6

Which mode of chemical signaling uses local chemical mediators that are quickly taken up, destroyed, or immobilized?

Accepted Answer

A)  Paracrine
B)  Autocrine
C)  Neurotransmitter
D)  HormoneE) A) and C)
F) B) and C)

Question 7

The cellular uptake of the nutrient cholesterol depends on which process?

Accepted Answer

A)  Receptor-mediated exocytosis
B)  Antiport system
C)  Receptor-mediated endocytosis
D)  Passive transportE) A) and B)
F) A) and C)

Question 8

Where is most of a cell's genetic information, including RNA and DNA, contained?

Accepted Answer

A)  Mitochondria
B)  Ribosome
C)  Nucleolus
D)  LysosomeE) B) and C)
F) B) and D)

Question 9

Understanding the various steps of proteolytic cascades may be useful in designing drug therapy for which human diseases?

Accepted Answer

A)  Cardiac and vascular disorders
B)  Autoimmune and malignant disorders
C)  Gastrointestinal and renal disorders
D)  Endocrine and gastrointestinal disordersE) None of the above
F) B) and C)

Question 10

What role do cytokines play in cell reproduction?

Accepted Answer

A)  Provide growth factor for tissue growth and development
B)  Block progress of cell reproduction through the cell cycle
C)  Restrain cell growth and development
D)  Provide nutrients for cell growth and developmentE) A) and B)
F) None of the above

Question 11

Which structure prevents water-soluble molecules from entering cells across the plasma membrane?

Accepted Answer

A)  Carbohydrate chains
B)  Glycoprotein channels
C)  Membrane channel proteins
D)  Lipid bilayerE) B) and C)
F) C) and D) D

Question 12

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

Accepted Answer

A)  Can be active or passive
B)  Only moves one molecule at a time
C)  Involves transport proteins
D)  Expends tremendous energy
E)  Occurs only with hormonesF) B) and E)
G) A) and B)

Question 13

What is the process of cellular reproduction?

Accepted Answer

A)  The process often takes months or years to complete.
B)  Cellular reproduction typically has a short interphase.
C)  Two diploid cells, called daughter cells, have been formed.
D)  The process involves the interaction of male and female cells.E) A) and C)
F) B) and C)

Question 14

Which method of transport uses transmembrane proteins with receptors with a high degree of specificity for the substance being transported?

Accepted Answer

A)  Active
B)  Mediated
C)  Transmembranous
D)  PassiveE) All of the above
F) B) and D)

Question 15

What is the primary function of proteins? (Select all that apply.)

Accepted Answer

A)  Proteins are binding units.
B)  Proteins are transport channels.
C)  Proteins are ribonucleoproteins.
D)  Proteins provide cell surface markers.
E)  Proteins are chemical reaction catalysts.F) D) and E)
G) A) and E)

Question 16

Which statement is true about phagocytosis?

Accepted Answer

A)  Phagocytosis is an example of exocytosis.
B)  Phagocytosis is dependent on small vesicles.
C)  Phagocytosis involves the ingestion of bacteria.
D)  Phagocytosis focuses on solute molecules.E) B) and D)
F) A) and B)

Question 17

Which form of cell communication is used to communicate within the cell itself and with other cells in direct physical contact?

Accepted Answer

A)  Protein channel (gap junction) 
B)  Plasma membrane-bound signaling molecules
C)  Hormone secretion such as neurotransmitters
D)  Extracellular chemical messengers such as ligandsE) All of the above
F) B) and C)

Question 18

What is the mechanism by which the energy produced from carbohydrates, proteins, and lipids is transferred to adenosine triphosphate (ATP) ?

Accepted Answer

A)  Anaerobic glycolysis
B)  Oxidative cellular metabolism
C)  Oxidative phosphorylation
D)  Tricarboxylic acid phosphorylationE) A) and C)
F) B) and C)

Question 19

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)  Proteases
C)  Proteins
D)  CarbohydratesE) B) and D)
F) All of the above C

Question 20

Which molecule provides the second messenger necessary for extracellular communication to be activated?

Accepted Answer

A)  Guanosine triphosphate (GTP) 
B)  Adenosine monophosphate (AMP) 
C)  Adenosine triphosphate (ATP) 
D)  Guanosine diphosphate (GDP) E) C) and D)
F) A) and D)

Exam 1: Cellular Biology

Which cAMP-mediated response is related to antidiuretic hormone?

Correct AnswerverifiedShow Answer

Passive transport is best described with which statement?

Correct AnswerverifiedShow Answer

Which is the best example of active transport?

Correct AnswerverifiedB

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

Correct AnswerverifiedShow Answer

What occurs during exocytosis?

Correct AnswerverifiedShow Answer

Which mode of chemical signaling uses local chemical mediators that are quickly taken up, destroyed, or immobilized?

Correct AnswerverifiedShow Answer

The cellular uptake of the nutrient cholesterol depends on which process?

Correct AnswerverifiedShow Answer

Where is most of a cell's genetic information, including RNA and DNA, contained?

Correct AnswerverifiedShow Answer

Understanding the various steps of proteolytic cascades may be useful in designing drug therapy for which human diseases?

Correct AnswerverifiedShow Answer

What role do cytokines play in cell reproduction?

Correct AnswerverifiedShow Answer

Which structure prevents water-soluble molecules from entering cells across the plasma membrane?

Correct AnswerverifiedD

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

Correct AnswerverifiedShow Answer

What is the process of cellular reproduction?

Correct AnswerverifiedShow Answer

Which method of transport uses transmembrane proteins with receptors with a high degree of specificity for the substance being transported?

Correct AnswerverifiedShow Answer

What is the primary function of proteins? (Select all that apply.)

Correct AnswerverifiedShow Answer

Which statement is true about phagocytosis?

Correct AnswerverifiedShow Answer

Which form of cell communication is used to communicate within the cell itself and with other cells in direct physical contact?

Correct AnswerverifiedShow Answer

What is the mechanism by which the energy produced from carbohydrates, proteins, and lipids is transferred to adenosine triphosphate (ATP) ?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedC

Which molecule provides the second messenger necessary for extracellular communication to be activated?

Correct AnswerverifiedShow Answer

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B

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D

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C

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