Question 1

The action of platelet-derived growth factor is to stimulate the production of which cells?

Accepted Answer

A)   Platelets
B)   Epidermal cells
C)   Connective tissue cells
D)   Fibroblast cellsE) B) and D)
F) None of the above

Question 2

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

Accepted Answer

A)  Endoplasmic reticulum
B)  Ribosome
C)  Secretory vesicle
D)  LysosomesE) C) and D)
F) None of the above

Question 3

Neurotransmitters affect the postsynaptic membrane by binding to:

Accepted Answer

A)   Lipids
B)   Ribosomes
C)   Amphipathic lipids
D)   ReceptorsE) All of the above
F) A) and B)

Question 4

Potassium and sodium are transported across plasma membranes by:

Accepted Answer

A)   Passive electrolyte channels
B)   Coupled channels
C)   Adenosine triphosphatase (ATPase)  enzyme
D)   DiffusionE) A) and B)
F) A) and C)

Question 5

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) B) and D)
G) A) and E)

Question 6

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 (involving receptors) 
C)   Hormone secretion such as neurotransmitters
D)   Extracellular chemical messengers such as ligandsE) A) and B)
F) B) and D)

Question 7

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 C)
F) A) and D)

Question 8

A muscle cell possesses which specialized function?

Accepted Answer

A)   Movement
B)   Conductivity
C)   Secretion
D)   RespirationE) C) and D)
F) A) and D)

Question 9

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) B) and D)
F) B) and C)

Question 10

Match the structure with its function.Answers may be used more than once.
-Movement of water

Accepted Answer

A)  Passive-mediated transport
B)  Active-mediated transport
C)  OsmosisD) A) and C)
E) All of the above

Question 11

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) None of the above
F) A) and B)

Question 12

Which statement is true about eukaryotic cells?

Accepted Answer

A)   They lack distinct nucleus.
B)   They contain compartments called organelles.
C)   They lack an encasing nuclear membrane.
D)   They are smaller than the typical prokaryote cell.E) A) and D)
F) C) and D)

Question 13

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) C) and D)
F) None of the above

Question 14

Which component of the cell produces hydrogen peroxide (H₂O₂) by using oxygen to remove hydrogen atoms from specific substrates in an oxidative reaction?

Accepted Answer

A)   Lysosomes
B)   Peroxisomes
C)   Ribosomes
D)   OxyhydrosomesE) A) and C)
F) All of the above

Question 15

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 B)
F) C) and D)

Question 16

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 C)
F) B) and C)

Question 17

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) A) and B)
F) None of the above

Question 18

Most of a cell's genetic information,including RNA and DNA,is contained in the:

Accepted Answer

A)   Mitochondria
B)   Ribosome
C)   Nucleolus
D)   LysosomeE) All of the above
F) A) and B)

Question 19

How do cells receive communication from the extracellular fluid surrounding them?

Accepted Answer

A)   Protein channel (gap junction) 
B)   Plasma membrane-bound signaling molecules (involving receptors) 
C)   Hormone secretion such as neurotransmitters
D)   Chemical messengers such as ligandsE) A) and C)
F) None of the above

Question 20

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

Accepted Answer

A)   Guanosine triphosphate (GTP) 
B)   Adenosine monophosphate (AMP) 
C)   Adenosine triphosphate (ATP) 
D)   Guanosine diphosphate (GDP) E) B) and C)
F) None of the above

Exam 1: Cellular Biology

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which component of the cell produces hydrogen peroxide (H₂O₂) by using oxygen to remove hydrogen atoms from specific substrates in an oxidative reaction?

Correct AnswerverifiedShow Answer

Most of a cell's genetic information,including RNA and DNA,is contained in the:

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 AnswerverifiedShow Answer

What is the process of cellular reproduction?

Correct AnswerverifiedShow Answer

Which statement is true about phagocytosis?

Correct AnswerverifiedShow Answer

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

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

How do cells receive communication from the extracellular fluid surrounding them?

Correct AnswerverifiedShow Answer

Match the structure with its function.Answers may be used more than once. -Movement of water

Correct AnswerverifiedShow Answer

A muscle cell possesses which specialized function?

Correct AnswerverifiedShow Answer

Which statement is true about eukaryotic cells?

Correct AnswerverifiedShow Answer

Potassium and sodium are transported across plasma membranes by:

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

The action of platelet-derived growth factor is to stimulate the production of which cells?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Neurotransmitters affect the postsynaptic membrane by binding to:

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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