Question 1

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

Accepted Answer

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

Question 2

Which of the following statements correctly describes some aspect of protein secretion from prokaryotic cells?

Accepted Answer

A)  Prokaryotes are unlikely to be able to secrete proteins because they lack an endomembrane system.
B)  The mechanism of protein secretion in prokaryotes is probably the same as that in eukaryotes.
C)  Proteins that are secreted by prokaryotes are synthesized on ribosomes that are bound to the cytoplasmic surface of the plasma membrane.
D)  In prokaryotes, the ribosomes that are used for the synthesis of secreted proteins are located outside of the cell.
E)  Prokaryotes contain large pores in their plasma membrane that permit the movement of proteins out of the cell.F) B) and E)
G) A) and D) C

Question 3

Signals between the ECM and the cytoskeleton may be transmitted by

Accepted Answer

A)  fibronectin.
B)  proteoglycans.
C)  integrins.
D)  collagen.
E)  middle lamella.F) A) and C)
G) A) and E)

Question 4

Prokaryotes are classified as belonging to two different domains. What are the domains?

Accepted Answer

A)  Bacteria and Eukarya
B)  Bacteria and Archaea
C)  Archaea and Protista
D)  Bacteria and Protista
E)  Bacteria and FungiF) B) and E)
G) A) and B)

Question 5

Which of the following makes it necessary for animal cells, although they have no cell walls, to have intercellular junctions?

Accepted Answer

A)  Cell membranes do not distinguish the types of ions and molecules passing through them.
B)  Large molecules, such as proteins and RNA molecules, do not readily get through one, much less two, adjacent cell membranes.
C)  Cell-to-cell communication requires physical attachment of one cell to another.
D)  Maintenance of tissue integrity and barriers to fluid leakage requires cells to adhere tightly to one another.
E)  The relative shapelessness of animal cells requires a mechanism for keeping the cells aligned.F) B) and E)
G) C) and D)

Question 6

Cytochalasin D is a drug that prevents actin polymerization. A cell treated with cytochalasin D will still be able to

Accepted Answer

A)  perform amoeboid movement.
B)  form cleavage furrows.
C)  contract muscle fibres.
D)  extend pseudopodia.
E)  move vesicles around the cell.F) B) and E)
G) B) and D)

Question 7

If radioactive deoxythymidine triphosphate (dTTP) is added to a culture of rapidly growing bacterial cells, where in the cell would you expect to find the greatest concentration of radioactivity?

Accepted Answer

A)  nucleus
B)  cytoplasm
C)  endoplasmic reticulum
D)  nucleoid
E)  ribosomesF) A) and D)
G) D) and E)

Question 8

Use the following figure to answer the questions below.
 
-In the figure above, identify the rough endoplasmic reticulum.

Accepted Answer

A)  A
B)  B
C)  C
D)  D
E)  The RER is not visible on this image.F) A) and E)
G) C) and D)

Question 9

Which organelle often takes up much of the volume of a plant cell?

Accepted Answer

A)  lysosome
B)  vacuole
C)  mitochondrion
D)  Golgi apparatus
E)  peroxisomeF) None of the above
G) C) and D)

Question 10

Which plant cell organelle contains its own DNA and ribosomes?

Accepted Answer

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

Question 11

Use the following figure to answer the questions below.
 
-The image above is a ________ image.

Accepted Answer

A)  light microscope
B)  phase contrast
C)  scanning electron micrograph
D)  transmission electron micrograph
E)  confocalF) A) and B)
G) A) and C)

Question 12

Vinblastine, a drug that inhibits microtubule polymerization, is used to treat some forms of cancer. Cancer cells given vinblastine would be unable to

Accepted Answer

A)  form cleavage furrows during cell division.
B)  migrate by amoeboid movement.
C)  separate chromosomes during cell division.
D)  extend pseudopods.
E)  maintain the shape of the nucleus.F) A) and D)
G) A) and E) C

Question 13

The smallest unit of matter that can be considered alive is the/a

Accepted Answer

A)  nucleic acid.
B)  mitochondria.
C)  virus.
D)  cell.
E)  organism.F) C) and D)
G) A) and B)

Question 14

The extracellular matrix is thought to participate in the regulation of animal cell behaviour by communicating information from the outside to the inside of the cell via which of the following?

Accepted Answer

A)  gap junctions
B)  the nucleus
C)  DNA and RNA
D)  integrins
E)  plasmodesmataF) A) and D)
G) All of the above

Question 15

All of the following are part of a prokaryotic cell except

Accepted Answer

A)  DNA.
B)  a cell wall.
C)  a plasma membrane.
D)  ribosomes.
E)  an endoplasmic reticulum.F) All of the above
G) C) and D)

Question 16

Use the following figure to answer the questions below.
 
-What type of cell is pictured above?

Accepted Answer

A)  Archaea
B)  Bacteria
C)  protist
D)  plant
E)  animalF) A) and E)
G) B) and D)

Question 17

When a potassium ion (K⁺) moves from the soil into the vacuole of a cell on the surface of a root, it must pass through several cellular structures. Which of the following correctly describes the order in which these structures will be encountered by the ion?

Accepted Answer

A)  plasma membrane → primary cell wall → cytoplasm → vacuole
B)  secondary cell wall → plasma membrane → primary cell wall → cytoplasm → vacuole
C)  primary cell wall → plasma membrane → cytoplasm → vacuole
D)  primary cell wall → plasma membrane → lysosome → cytoplasm → vacuole
E)  primary cell wall → plasma membrane → cytoplasm → secondary cell wall → vacuoleF) B) and C)
G) C) and D)

Question 18

A biologist wants specifically to examine the surfaces of different types of cells in kidney tubules of small mammals. The cells in question can be distinguished by external shape, size, and 3-D characteristics. Which of the following would be the optimum method for her study?

Accepted Answer

A)  transmission electron microscopy
B)  cell fractionation
C)  light microscopy using stains specific to kidney function
D)  light microscopy of living unstained material
E)  scanning electron microscopyF) B) and D)
G) A) and D)

Question 19

Which of the following contain the 9 + 2 arrangement of microtubules, consisting of nine doublets of microtubules surrounding a pair of single microtubules?

Accepted Answer

A)  both motile cilia and primary (nonmotile) cilia
B)  centrioles only
C)  both flagella and motile cilia
D)  both basal bodies and primary (nonmotile) cilia
E)  both centrioles and basal bodiesF) A) and D)
G) A) and C)

Question 20

Which type of organelle or structure is primarily involved in the synthesis of oils, phospholipids, and steroids?

Accepted Answer

A)  ribosome
B)  lysosome
C)  smooth endoplasmic reticulum
D)  mitochondrion
E)  contractile vacuoleF) A) and E)
G) A) and B)

Exam 6: A Tour of the Cell

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

Correct AnswerverifiedD

Which of the following statements correctly describes some aspect of protein secretion from prokaryotic cells?

Correct AnswerverifiedC

Signals between the ECM and the cytoskeleton may be transmitted by

Correct AnswerverifiedShow Answer

Prokaryotes are classified as belonging to two different domains. What are the domains?

Correct AnswerverifiedShow Answer

Which of the following makes it necessary for animal cells, although they have no cell walls, to have intercellular junctions?

Correct AnswerverifiedShow Answer

Cytochalasin D is a drug that prevents actin polymerization. A cell treated with cytochalasin D will still be able to

Correct AnswerverifiedShow Answer

If radioactive deoxythymidine triphosphate (dTTP) is added to a culture of rapidly growing bacterial cells, where in the cell would you expect to find the greatest concentration of radioactivity?

Correct AnswerverifiedShow Answer

Use the following figure to answer the questions below. -In the figure above, identify the rough endoplasmic reticulum.

Correct AnswerverifiedShow Answer

Which organelle often takes up much of the volume of a plant cell?

Correct AnswerverifiedShow Answer

Which plant cell organelle contains its own DNA and ribosomes?

Correct AnswerverifiedShow Answer

Use the following figure to answer the questions below. -The image above is a ________ image.

Correct AnswerverifiedShow Answer

Vinblastine, a drug that inhibits microtubule polymerization, is used to treat some forms of cancer. Cancer cells given vinblastine would be unable to

Correct AnswerverifiedC

The smallest unit of matter that can be considered alive is the/a

Correct AnswerverifiedShow Answer

The extracellular matrix is thought to participate in the regulation of animal cell behaviour by communicating information from the outside to the inside of the cell via which of the following?

Correct AnswerverifiedShow Answer

All of the following are part of a prokaryotic cell except

Correct AnswerverifiedShow Answer

Use the following figure to answer the questions below. -What type of cell is pictured above?

Correct AnswerverifiedShow Answer

When a potassium ion (K⁺) moves from the soil into the vacuole of a cell on the surface of a root, it must pass through several cellular structures. Which of the following correctly describes the order in which these structures will be encountered by the ion?

Correct AnswerverifiedShow Answer

A biologist wants specifically to examine the surfaces of different types of cells in kidney tubules of small mammals. The cells in question can be distinguished by external shape, size, and 3-D characteristics. Which of the following would be the optimum method for her study?

Correct AnswerverifiedShow Answer

Which of the following contain the 9 + 2 arrangement of microtubules, consisting of nine doublets of microtubules surrounding a pair of single microtubules?

Correct AnswerverifiedShow Answer

Which type of organelle or structure is primarily involved in the synthesis of oils, phospholipids, and steroids?

Correct AnswerverifiedShow Answer

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C

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