Question 1

Phagocytosis is an example of:

Accepted Answer

A)   exocytosis.
B)   endocytosis.
C)   passive transport.
D)   facilitated diffusion.E) None of the above
F) A) and B)

Question 2

Active transport processes that use protein carrier molecules, or pumps, do not use cellular energy but rely instead on concentration gradients.

Accepted Answer

A) True 
 B)False

Question 3

A saline solution that contains a higher concentration of salt than a red blood cell would be:

Accepted Answer

A)   isotonic.
B)   hypotonic.
C)   hypertonic.
D)   hydrostatic.E) B) and D)
F) B) and C)

Question 4

Protein anabolism is a rarely used cellular activity.

Accepted Answer

A) True 
 B)False

Question 5

Explain why the electron transport system is necessary to get all of the usable energy out of the processes of glycolysis and the citric acid cycle.

Accepted Answer

The electron transport system is necessa...

Question 6

Which of the following is not true of enzymes?

Accepted Answer

A)   They increase the activation of a reaction.
B)   They are unchanged by the chemical reaction.
C)   They frequently require a cofactor or coenzyme to function.
D)   All of the above are true of enzymes.E) None of the above
F) A) and D)

Question 7

The sodium-potassium pump in the cell membrane moves potassium into the cell and sodium out of the cell.

Accepted Answer

A) True 
 B)False

Question 8

The engulfing of microbes by white blood cells is an example of:

Accepted Answer

A)   pinocytosis.
B)   exocytosis.
C)   phagocytosis.
D)   "cell drinking."E) A) and B)
F) None of the above

Question 9

One of the advantages of active transport is that it can move materials up, or against, its concentration gradient.

Accepted Answer

A) True 
 B)False

Question 10

The "lock-and-key" model of enzyme function explains how the protein and substrate join.

Accepted Answer

A) True 
 B)False

Question 11

Match each term with its description.
-Process also called the Krebs cycle

Accepted Answer

A)  Cytosol
B)  Citric acid cycle
C)  Pyruvic acid
D)  Acetyl coenzyme A
E)  NADF) MitochondriaG) Lactic acidH) Electron transport systemI) AnaerobicJ) GlycolysisK) D) and J)
L) D) and E)

Question 12

Match the name of each enzyme with its function or description.
-Add water to a molecule without splitting it

Accepted Answer

A)  Hydrases
B)  Hydrolases
C)  Phosphorylating enzymes
D)  Mutases or isomerases
E)  Carboxylases or decarboxylasesF) Oxidases and hydrogenasesG) A) and B)
H) A) and E)

Question 13

A solution may be defined as various solutes dissolved in a solvent.

Accepted Answer

A) True 
 B)False

Question 14

Match each term with its description.
-Compound that carries high energy electrons to the electron transport system

Accepted Answer

A)  Cytosol
B)  Citric acid cycle
C)  Pyruvic acid
D)  Acetyl coenzyme A
E)  NADF) MitochondriaG) Lactic acidH) Electron transport systemI) AnaerobicJ) GlycolysisK) E) and G)
L) E) and F)

Question 15

Briefly explain the process of glycolysis. What energy molecules are produced, and how many of each are produced?

Accepted Answer

Glycolysis is the process by which gluco...

Question 16

Allosteric effectors activate or inactivate enzymes by changing the shape of the enzyme's active site.

Accepted Answer

A) True 
 B)False

Question 17

Which of the following is not true of the exocytosis?

Accepted Answer

A)   The vesicles containing the protein were formed by the rough endoplasmic reticulum.
B)   The vesicles are pulled to the cell membrane by the cytoskeleton.
C)   The vesicles add to the structure of the cell membrane.
D)   All of the above are true of exocytosis.E) All of the above
F) None of the above

Question 18

For an enzyme to function, the coenzyme must fit into the enzyme's active site like a key fits into a lock.

Accepted Answer

A) True 
 B)False

Question 19

The physical movement of water and solutes through a membrane when a hydrostatic pressure gradient exists is called filtration.

Accepted Answer

A) True 
 B)False

Question 20

For osmosis to occur there must be at least one impermeable solute present.

Accepted Answer

A) True 
 B)False

Exam 6: Cell Function

The physical movement of water and solutes through a membrane when a hydrostatic pressure gradient exists is called filtration.

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The "lock-and-key" model of enzyme function explains how the protein and substrate join.

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Briefly explain the process of glycolysis. What energy molecules are produced, and how many of each are produced?

Correct AnswerAnswered by ExamLex AIGlycolysis is the process by which gluco...View AnswerShow Answer

Match the name of each enzyme with its function or description. -Add water to a molecule without splitting it

Correct AnswerverifiedShow Answer

For osmosis to occur there must be at least one impermeable solute present.

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The sodium-potassium pump in the cell membrane moves potassium into the cell and sodium out of the cell.

Correct AnswerverifiedShow Answer

A solution may be defined as various solutes dissolved in a solvent.

Correct AnswerverifiedShow Answer

Active transport processes that use protein carrier molecules, or pumps, do not use cellular energy but rely instead on concentration gradients.

Correct AnswerverifiedShow Answer

Match each term with its description. -Process also called the Krebs cycle

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Phagocytosis is an example of:

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Match each term with its description. -Compound that carries high energy electrons to the electron transport system

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Protein anabolism is a rarely used cellular activity.

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The engulfing of microbes by white blood cells is an example of:

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One of the advantages of active transport is that it can move materials up, or against, its concentration gradient.

Correct AnswerverifiedShow Answer

Allosteric effectors activate or inactivate enzymes by changing the shape of the enzyme's active site.

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For an enzyme to function, the coenzyme must fit into the enzyme's active site like a key fits into a lock.

Correct AnswerverifiedShow Answer

Which of the following is not true of the exocytosis?

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A saline solution that contains a higher concentration of salt than a red blood cell would be:

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Which of the following is not true of enzymes?

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Explain why the electron transport system is necessary to get all of the usable energy out of the processes of glycolysis and the citric acid cycle.

Correct AnswerAnswered by ExamLex AIThe electron transport system is necessa...View AnswerShow Answer

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Glycolysis is the process by which gluco...
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Answered by ExamLex AI
The electron transport system is necessa...
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