Question 1

A cell with a predominance of free ribosomes is most likely

Accepted Answer

A)  producing primarily proteins for secretion.
B)  producing primarily cytoplasmic proteins.
C)  constructing an extensive cell wall or extracellular matrix.
D)  digesting large food particles.
E)  enlarging its vacuole.F) A) and D)
G) A) and B)

Question 2

Use the following figure to answer the questions below.
 
-Which two structures are shared by all eukaryotic cells?

Accepted Answer

A)  A and C
B)  A and D
C)  B and D
D)  B and E
E)  C and EF) A) and E)
G) None of the above

Question 3

Ions can travel directly from the cytoplasm of one animal cell to the cytoplasm of an adjacent cell through

Accepted Answer

A)  plasmodesmata.
B)  intermediate filaments.
C)  tight junctions.
D)  desmosomes.
E)  gap junctions.F) A) and D)
G) All of the above

Question 4

Which of the trees in this figure groups the domains according to similarities in cellular size and architecture?

Accepted Answer

A)  A
B)  B
C)  C
D)  DE) B) and D)
F) B) and C)

Question 5

The fact that the outer membrane of the nuclear envelope has bound ribosomes allows one to most reliably conclude that

Accepted Answer

A)  at least some of the proteins that function in the nuclear envelope are made by the ribosomes on the nuclear envelope.
B)  the nuclear envelope is not part of the endomembrane system.
C)  the nuclear envelope is physically separated from the endoplasmic reticulum.
D)  small vesicles from the Golgi fuse with the nuclear envelope.
E)  nuclear pore complexes contain proteins.F) C) and D)
G) C) and E)

Question 6

A primary objective of cell fractionation is to

Accepted Answer

A)  view the structure of cell membranes.
B)  sort cells based on their size and weight.
C)  determine the size of various organelles.
D)  separate the major organelles so that their particular functions can be determined.
E)  separate lipid-soluble from water-soluble molecules.F) B) and E)
G) All of the above

Question 7

ECM proteins are made by ribosomes in which part of a eukaryotic cell?

Accepted Answer

A)  mitochondria
B)  cytoplasm
C)  nuclear envelope
D)  Golgi apparatus
E)  rough ERF) A) and B)
G) A) and C)

Question 8

In the fractionation of homogenized cells using centrifugation, the primary factor that determines whether a specific cellular component ends up in the supernatant or the pellet is

Accepted Answer

A)  the relative solubility of the component.
B)  the size and weight of the component.
C)  the percentage of carbohydrates in the component.
D)  the presence or absence of nucleic acids in the component.
E)  the presence or absence of lipids in the component.F) A) and C)
G) All of the above

Question 9

Cells require which of the following to form cilia or flagella?

Accepted Answer

A)  centrosomes
B)  laminin
C)  actin
D)  intermediate filaments
E)  secretory vesiclesF) D) and E)
G) A) and C)

Question 10

Use the following figure to answer the questions below.
 
-What is the function of the structure labelled E?

Accepted Answer

A)  respiration
B)  photosynthesis
C)  maintain cell pressure
D)  contain DNA
E)  synthesize lipidsF) B) and E)
G) B) and C)

Question 11

The nuclear lamina is an array of filaments on the inner side of the nuclear membrane. If a method were found that could cause the lamina to fall into disarray, what would you expect to be the most likely consequence?

Accepted Answer

A)  the loss of all nuclear function
B)  the inability of the nucleus to divide during cell division
C)  a change in the shape of the nucleus
D)  failure of chromosomes to carry genetic information
E)  inability of the nucleus to keep out destructive chemicalsF) A) and E)
G) B) and D)

Question 12

The volume enclosed by the plasma membrane of plant cells is often much larger than the corresponding volume in animal cells. The most reasonable explanation for this observation is that

Accepted Answer

A)  plant cells are capable of having a much higher surface-to-volume ratio than animal cells.
B)  plant cells have a much more highly convoluted (folded)  plasma membrane than animal cells.
C)  plant cells contain a large vacuole that reduces the volume of the cytoplasm.
D)  animal cells are more spherical, whereas plant cells are elongated.
E)  plant cells can have lower surface-to-volume ratios than animal cells because plant cells synthesize their own nutrients.F) D) and E)
G) None of the above

Question 13

A mutation that disrupts the ability of an animal cell to add polysaccharide modifications to proteins would most likely cause defects in its

Accepted Answer

A)  nuclear lamina and nuclear matrix.
B)  nuclear matrix and extracellular matrix.
C)  mitochondria and Golgi apparatus.
D)  Golgi apparatus and extracellular matrix.
E)  nuclear pores and secretory vesicles.F) B) and D)
G) None of the above

Question 14

Which of the following contains hydrolytic enzymes?

Accepted Answer

A)  lysosome
B)  vacuole
C)  mitochondrion
D)  Golgi apparatus
E)  peroxisomeF) B) and D)
G) A) and B)

Question 15

Which of the following statements about the cytoskeleton is true?

Accepted Answer

A)  The dynamic aspect of cytoskeletal function is made possible by the assembly and disassembly of a large variety of proteins into complex aggregates.
B)  Microfilaments are structurally rigid and resist compression, whereas microtubules resist tension (stretching) .
C)  Movement of cilia and flagella is the result of motor proteins causing microtubules to move relative to each other.
D)  Chemicals that block the assembly of the cytoskeleton would cause little effect on the cell's response to external signals and stimuli.
E)  Transport vesicles among the membranes of the endomembrane system produce the cytoskeleton.F) C) and E)
G) A) and E)

Question 16

Which structure is the site of the synthesis of proteins that may be exported from the cell?

Accepted Answer

A)  rough ER
B)  lysosomes
C)  plasmodesmata
D)  Golgi vesicles
E)  free cytoplasmic ribosomesF) C) and D)
G) None of the above

Question 17

Use the following information to answer the questions below.
You are investigating different live cells using a light microscope. The first cells you observe are part of a larger organism. They have a clear area in the middle, a defined shape, and you can see many greenish ovals pressed up along the outer edges.
-The movement inside the cells that you observed are a result of

Accepted Answer

A)  cilia movement.
B)  the interaction of actin and myosin filaments.
C)  the extracellular matrix.
D)  cell division.
E)  intermediate filaments.F) C) and D)
G) C) and E)

Question 18

Which organelle is the primary site of ATP synthesis in eukaryotic cells?

Accepted Answer

A)  lysosome
B)  vacuole
C)  mitochondrion
D)  Golgi apparatus
E)  peroxisomeF) All of the above
G) B) and E)

Question 19

The smallest cell structure that would most likely be visible with a standard (not super-resolution) research-grade light microscope is

Accepted Answer

A)  a mitochondrion.
B)  a microtubule.
C)  a ribosome.
D)  a microfilament.
E)  a nuclear pore.F) A) and E)
G) A) and D)

Question 20

Recent evidence shows that when chromosomes decondense during interphase, their DNA molecules do not intermingle. Instead, they occupy distinct territories within the nucleus. Considering the structure and location of the following structures, which is most likely to be involved in chromosome location?

Accepted Answer

A)  nuclear pores
B)  the nucleolus
C)  microfilaments
D)  the nuclear lamina and matrix
E)  the nuclear envelopeF) None of the above
G) A) and C)

Exam 6: A Tour of the Cell

A cell with a predominance of free ribosomes is most likely

Correct Answer
verified

The smallest cell structure that would most likely be visible with a standard (not super-resolution) research-grade light microscope is

Correct Answer
verified

A mutation that disrupts the ability of an animal cell to add polysaccharide modifications to proteins would most likely cause defects in its

Correct Answer
verified

Which organelle is the primary site of ATP synthesis in eukaryotic cells?

Correct Answer
verified

The nuclear lamina is an array of filaments on the inner side of the nuclear membrane. If a method were found that could cause the lamina to fall into disarray, what would you expect to be the most likely consequence?

Correct Answer
verified

Which of the trees in this figure groups the domains according to similarities in cellular size and architecture?

Correct Answer
verified

The volume enclosed by the plasma membrane of plant cells is often much larger than the corresponding volume in animal cells. The most reasonable explanation for this observation is that

Correct Answer
verified

Use the following figure to answer the questions below. -Which two structures are shared by all eukaryotic cells?

Correct Answer
verified

In the fractionation of homogenized cells using centrifugation, the primary factor that determines whether a specific cellular component ends up in the supernatant or the pellet is

Correct Answer
verified

Which structure is the site of the synthesis of proteins that may be exported from the cell?

Correct Answer
verified

Correct Answer
verified

A primary objective of cell fractionation is to

Correct Answer
verified

Cells require which of the following to form cilia or flagella?

Correct Answer
verified

ECM proteins are made by ribosomes in which part of a eukaryotic cell?

Correct Answer
verified

The fact that the outer membrane of the nuclear envelope has bound ribosomes allows one to most reliably conclude that

Correct Answer
verified

Which of the following statements about the cytoskeleton is true?

Correct Answer
verified

Which of the following contains hydrolytic enzymes?

Correct Answer
verified

Use the following figure to answer the questions below. -What is the function of the structure labelled E?

Correct Answer
verified

Ions can travel directly from the cytoplasm of one animal cell to the cytoplasm of an adjacent cell through

Correct Answer
verified

Correct Answer
verified

Exam 6: A Tour of the Cell

A cell with a predominance of free ribosomes is most likely

Correct AnswerverifiedShow Answer

The smallest cell structure that would most likely be visible with a standard (not super-resolution) research-grade light microscope is

Correct AnswerverifiedShow Answer

A mutation that disrupts the ability of an animal cell to add polysaccharide modifications to proteins would most likely cause defects in its

Correct AnswerverifiedShow Answer

Which organelle is the primary site of ATP synthesis in eukaryotic cells?

Correct AnswerverifiedShow Answer

The nuclear lamina is an array of filaments on the inner side of the nuclear membrane. If a method were found that could cause the lamina to fall into disarray, what would you expect to be the most likely consequence?

Correct AnswerverifiedShow Answer

Which of the trees in this figure groups the domains according to similarities in cellular size and architecture?

Correct AnswerverifiedShow Answer

The volume enclosed by the plasma membrane of plant cells is often much larger than the corresponding volume in animal cells. The most reasonable explanation for this observation is that

Correct AnswerverifiedShow Answer

Use the following figure to answer the questions below. -Which two structures are shared by all eukaryotic cells?

Correct AnswerverifiedShow Answer

In the fractionation of homogenized cells using centrifugation, the primary factor that determines whether a specific cellular component ends up in the supernatant or the pellet is

Correct AnswerverifiedShow Answer

Which structure is the site of the synthesis of proteins that may be exported from the cell?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

A primary objective of cell fractionation is to

Correct AnswerverifiedShow Answer

Cells require which of the following to form cilia or flagella?

Correct AnswerverifiedShow Answer

ECM proteins are made by ribosomes in which part of a eukaryotic cell?

Correct AnswerverifiedShow Answer

The fact that the outer membrane of the nuclear envelope has bound ribosomes allows one to most reliably conclude that

Correct AnswerverifiedShow Answer

Which of the following statements about the cytoskeleton is true?

Correct AnswerverifiedShow Answer

Which of the following contains hydrolytic enzymes?

Correct AnswerverifiedShow Answer

Use the following figure to answer the questions below. -What is the function of the structure labelled E?

Correct AnswerverifiedShow Answer

Ions can travel directly from the cytoplasm of one animal cell to the cytoplasm of an adjacent cell through

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

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