Question 1

A solution that contains a higher solute concentration than the cytoplasm of a cell is called

Accepted Answer

A)   monotonic.
B)   hypertonic.
C)   isotonic.
D)   hypotonic.
E)   semitonic.F) C) and E)
G) None of the above

Question 2

A cell must expend energy to accomplish substance movement during

Accepted Answer

A)   diffusion.
B)   active transport.
C)   passive transport.
D)   osmosis.
E)   filtration.F) A) and C)
G) A) and E)

Question 3

The process of binding a specific molecule and then bringing it into the cell in a vesicle is called

Accepted Answer

A)   exocytosis.
B)   transcytosis.
C)   phagocytosis.
D)   receptor-mediated endocytosis.
E)   pinocytosis.F) A) and B)
G) A) and C)

Question 4

Structure #1 represents the

Accepted Answer

A)   ribosomes.
B)   microvilli.
C)   cilia.
D)   Golgi apparatus.
E)   cytoskeleton.F) A) and B)
G) All of the above

Question 5

Mutations are permanent alterations in which of the following?

Accepted Answer

A)   tRNA
B)   DNA
C)   mRNA
D)   snRNA
E)   ribosomesF) C) and D)
G) A) and E)

Question 6

The smallest living things are

Accepted Answer

A)   proteins.
B)   organ systems.
C)   tissues.
D)   organs.
E)   cells.F) None of the above
G) All of the above

Question 7

Translation takes place on the

Accepted Answer

A)   histone.
B)   nucleolus.
C)   ribosome.
D)   DNA.
E)   nuclear pore.F) B) and C)
G) None of the above

Question 8

The mRNA sequence that is complementary to the sequence UAG on a tRNA is

Accepted Answer

A)   ATC.
B)   TUC.
C)   UAG.
D)   AUC.
E)   ACU.F) A) and E)
G) A) and B)

Question 9

Which of these is an example of carrier-mediated transport that does not require energy input?

Accepted Answer

A)   an ion exchange pump
B)   facilitated diffusion
C)   endocytosis
D)   exocytosis
E)   pinocytosisF) B) and E)
G) C) and D)

Question 10

Which molecule carries an amino acid to the site of protein synthesis during translation?

Accepted Answer

A)   tRNA
B)   rRNA
C)   mRNA
D)   snRNA
E)   microRNAF) A) and E)
G) A) and D)

Question 11

Palytoxin is a very potent toxin from a particular seaweed in Hawaii that locks the carrier proteins of the ion pump system of the cell in an open position. What result would this have on cell function?

Accepted Answer

A)   Sodium cannot enter the cells, and cell metabolism is damaged.
B)   The cells cannot utilize glucose.
C)   Phagocytosis is inhibited.
D)   Diffusion cannot occur.
E)   The cell cannot concentrate ions to achieve concentrations necessary for cell function.F) B) and C)
G) B) and D)

Question 12

Briefly explain the process of active transport as it relates to the sodium-potassium pump.

Accepted Answer

Active transport requires cellular energ...

Question 13

Synthesis of phospholipids is a function of the

Accepted Answer

A)   ribosomes.
B)   Golgi apparatus.
C)   lysosomes.
D)   mitochondria.
E)   smooth endoplasmic reticulum.F) A) and E)
G) C) and E)

Question 14

Which statement is true about cancer and cancer cells?

Accepted Answer

A)   Cancer cells use more oxygen and nutrients than normal cells.
B)   Normal cells do not become cancer cells.
C)   Benign cancers do not kill the host.
D)   Malignant cancer cells directly kill normal cells by producing toxins.
E)   Cancer cells undergo mitosis at a slower rate than normal cells.F) B) and D)
G) None of the above

Question 15

Flu viruses enter into a prospective host cell (along the respiratory tract)  and direct it to produce many copies of the viruses. As those viruses bud off of the infected cell, they take the cell membrane of the host cell with them. How might this kill the host cell?

Accepted Answer

A)   The infected host cell loses the ability to transport materials in and out.
B)   The infected cell cannot metabolize.
C)   The infected cell cannot make RNA.
D)   The infected cell loses the ability to move towards nutrient sources.
E)   None of these is correct.F) A) and C)
G) B) and D)

Question 16

Figure 3-4 Protein Synthesis
Use Figure 3-4 to answer the following questions:
-Identify the organelle shown in the figure, which is described as stacks of flattened membranes containing chambers.

Accepted Answer

A)   flagellum
B)   RER
C)   mitochondrion
D)   Golgi apparatus
E)   SERF) B) and E)
G) A) and B)

Question 17

Protein production is a function of the

Accepted Answer

A)   microtubules.
B)   mitochondria.
C)   rough ER.
D)   ribosomes.
E)   Golgi apparatus.F) B) and E)
G) B) and D)

Question 18

Identify the phase of mitosis, which ends when daughter chromosomes move to the centrioles at opposite poles of the cell.

Accepted Answer

A)   prophase
B)   metaphase
C)   anaphase
D)   telophase
E)   interphaseF) A) and B)
G) B) and D)

Question 19

Which of the following consists of a set of flattened membranous disks?

Accepted Answer

A)   rough ER
B)   smooth ER
C)   mitochondria
D)   nucleoli
E)   Golgi apparatusF) B) and D)
G) A) and E)

Question 20

A process that requires ATP energy to move a substance independently of its concentration gradient is called

Accepted Answer

A)   active transport.
B)   passive transport.
C)   facilitated transport.
D)   osmosis.
E)   diffusion.F) B) and E)
G) B) and C)

Exam 3: Cell Structure and Function

A solution that contains a higher solute concentration than the cytoplasm of a cell is called

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Figure 3-4 Protein Synthesis Use Figure 3-4 to answer the following questions: -Identify the organelle shown in the figure, which is described as stacks of flattened membranes containing chambers.

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Which of the following consists of a set of flattened membranous disks?

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A process that requires ATP energy to move a substance independently of its concentration gradient is called

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The mRNA sequence that is complementary to the sequence UAG on a tRNA is

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The process of binding a specific molecule and then bringing it into the cell in a vesicle is called

Correct AnswerverifiedShow Answer

Which molecule carries an amino acid to the site of protein synthesis during translation?

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Which statement is true about cancer and cancer cells?

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Structure #1 represents the

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Which of these is an example of carrier-mediated transport that does not require energy input?

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Identify the phase of mitosis, which ends when daughter chromosomes move to the centrioles at opposite poles of the cell.

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Flu viruses enter into a prospective host cell (along the respiratory tract) and direct it to produce many copies of the viruses. As those viruses bud off of the infected cell, they take the cell membrane of the host cell with them. How might this kill the host cell?

Correct AnswerverifiedShow Answer

Protein production is a function of the

Correct AnswerverifiedShow Answer

Synthesis of phospholipids is a function of the

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The smallest living things are

Correct AnswerverifiedShow Answer

Translation takes place on the

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Mutations are permanent alterations in which of the following?

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Palytoxin is a very potent toxin from a particular seaweed in Hawaii that locks the carrier proteins of the ion pump system of the cell in an open position. What result would this have on cell function?

Correct AnswerverifiedShow Answer

A cell must expend energy to accomplish substance movement during

Correct AnswerverifiedShow Answer

Briefly explain the process of active transport as it relates to the sodium-potassium pump.

Correct AnswerverifiedActive transport requires cellular energ...View AnswerShow Answer

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Active transport requires cellular energ...
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