Question 1

The plasma membrane is important for all the following reasons except

Accepted Answer

A)   it determines what substances enter and exit the cell.
B)   it separates the ECF from the ICF.
C)   it acts as a site for cell-to-cell interaction and recognition.
D)   it is an important site for DNA transcription.E) B) and D)
F) A) and C)

Question 2

Describe the mitochondria.

Accepted Answer

These are long, thin organelles, that ha...

Question 3

Dyneins and kinesins are motor proteins that ________.

Accepted Answer

A)   enable a cell to send out and retract extensions called pseudopods.
B)   move organelles along microtubules through the cytoplasm.
C)   are molecular components of telomeres
D)   resist pulling forces that are placed on cells.E) A) and B)
F) A) and C)

Question 4

Hormones are secreted by

Accepted Answer

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

Question 5

The cell that gathers information and controls body functions is a

Accepted Answer

A)   macrophage.
B)   fat cell.
C)   sperm cell.
D)   neuron.E) A) and D)
F) B) and D)

Question 6

This network of rods running throughout the cytosol acts as a cell's "bones," "muscles," and "ligaments."

Accepted Answer

The answer of This network of rods running throughout the...

Question 7

The double membrane structure is unique to the

Accepted Answer

A)   lysosome.
B)   peroxisome.
C)   mitochondrion.
D)   nucleolus.E) B) and C)
F) A) and B)

Question 8

Which of the following statements about the rough endoplasmic reticulum is False?

Accepted Answer

A)   It consists of stacked envelopes called cisternae.
B)   It makes the digestive enzymes contained in the lysosomes.
C)   It stores lipids as inclusions.
D)   It makes the integral proteins of the cell membrane.E) B) and C)
F) A) and C)

Question 9

During what phase of mitosis does the mitotic spindle break down and disappear?

Accepted Answer

A)   metaphase
B)   anaphase
C)   telophase
D)   late prophaseE) A) and B)
F) B) and D)

Question 10

This phase is the physical division of the cytoplasm between the two newly formed cells that result from mitosis.

Accepted Answer

The answer of This phase is the physical division of...

Question 11

Figure 2.1
Use the diagram above to answer the following questions.
-Which letter indicates the mitochondrion?

Accepted Answer

A)   A
B)   B
C)   C
D)   D
E)   EF) All of the above
G) B) and C)

Question 12

This is the name for the currently held theory describing the plasma membrane structure.

Accepted Answer

The answer of This is the name for the currently...

Question 13

The nucleolus serves as the cell's ribosome-producing machine.

Accepted Answer

A) True 
 B)False

Question 14

This is the diffusion of water molecules across a membrane.

Accepted Answer

The answer of This is the diffusion of water molecules...

Question 15

Which membranous organelle stores calcium and is a primary site of lipid metabolism?

Accepted Answer

A)   Golgi apparatus
B)   smooth endoplasmic reticulum
C)   mitochondrion
D)   peroxisomeE) A) and B)
F) None of the above

Question 16

This membranous organelle contains oxidase and catalase enzymes.

Accepted Answer

A)   Golgi apparatus
B)   lysosome
C)   rough endoplasmic reticulum
D)   mitochondria
E)   peroxisomeF) B) and D)
G) B) and C)

Question 17

This organelle is primarily a sac of powerful digestive enzymes called acid hydrolases.

Accepted Answer

A)   Golgi apparatus
B)   lysosome
C)   rough endoplasmic reticulum
D)   mitochondria
E)   peroxisomeF) A) and D)
G) C) and D)

Question 18

Peroxisomes are important in detoxification of a number of toxic substances, for instance, hydrogen peroxide.

Accepted Answer

A) True 
 B)False

Question 19

During anaphase, the chromosomes are moved to the center of the cell.

Accepted Answer

A) True 
 B)False

Question 20

Embedded in the plasma membrane of cells, cholesterol molecules act to

Accepted Answer

A)   stabilize the membrane.
B)   make the membrane more resistant to freezing.
C)   destabilize the membrane, leading to heart attacks.
D)   participate in pinocytosis.E) A) and B)
F) All of the above

Exam 2: The Living Units

This is the name for the currently held theory describing the plasma membrane structure.

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This organelle is primarily a sac of powerful digestive enzymes called acid hydrolases.

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Peroxisomes are important in detoxification of a number of toxic substances, for instance, hydrogen peroxide.

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The nucleolus serves as the cell's ribosome-producing machine.

Correct AnswerverifiedShow Answer

During anaphase, the chromosomes are moved to the center of the cell.

Correct AnswerverifiedShow Answer

The cell that gathers information and controls body functions is a

Correct AnswerverifiedShow Answer

Figure 2.1 Use the diagram above to answer the following questions. -Which letter indicates the mitochondrion?

Correct AnswerverifiedShow Answer

This network of rods running throughout the cytosol acts as a cell's "bones," "muscles," and "ligaments."

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During what phase of mitosis does the mitotic spindle break down and disappear?

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Describe the mitochondria.

Correct AnswerverifiedThese are long, thin organelles, that ha...View AnswerShow Answer

This is the diffusion of water molecules across a membrane.

Correct AnswerverifiedShow Answer

This phase is the physical division of the cytoplasm between the two newly formed cells that result from mitosis.

Correct AnswerverifiedShow Answer

Dyneins and kinesins are motor proteins that ________.

Correct AnswerverifiedShow Answer

Embedded in the plasma membrane of cells, cholesterol molecules act to

Correct AnswerverifiedShow Answer

This membranous organelle contains oxidase and catalase enzymes.

Correct AnswerverifiedShow Answer

Which membranous organelle stores calcium and is a primary site of lipid metabolism?

Correct AnswerverifiedShow Answer

The plasma membrane is important for all the following reasons except

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Which of the following statements about the rough endoplasmic reticulum is False?

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The double membrane structure is unique to the

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Hormones are secreted by

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These are long, thin organelles, that ha...
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