Question 1

Which of the following is an organelle of locomotion?

Accepted Answer

A)  nucleolus
B)  endoplasmic reticulum
C)  peroxisomes
D)  Golgi apparatus
E)  flagellumF) A) and C)
G) B) and C)

Question 2

In one form of endocytosis a molecule binds to a specific protein on the cell surface and triggers vesicle formation and endocytosis.What type of transport is this?

Accepted Answer

A)   Pinocytosis
B)   Facilitated diffusion
C)   Receptor-mediated endocytosis
D)   Active exocytosisE) C) and D)
F) B) and D)

Question 3

All of the following processes can move substances out of a cell EXCEPT

Accepted Answer

A)  diffusion.
B)  phagocytosis.
C)  active transport.
D)  osmosis.
E)  exocytosis.F) A) and B)
G) A) and C)

Question 4

The intracellular digestive organelle of a cell is the

Accepted Answer

A)  lipochrome.
B)  smooth endoplasmic reticulum.
C)  lysosome.
D)  rough endoplasmic reticulum.
E)  microtubule.F) B) and D)
G) A) and E)

Question 5

Which type of transport proteins use cell energy to move molecules across the plasma membrane?

Accepted Answer

A)  cadherins
B)  leak-ion channels
C)  ATP-powered pumps
D)  ligand-gated ion channelsE) A) and D)
F) C) and D)

Question 6

What type of cell has abundant ribosomes?

Accepted Answer

A)  cardiac muscle cells (require large amounts of ATP) 
B)  white blood cell,a phagocyte
C)  fibroblast (makes protein fibers) 
D)  red blood cell (transports oxygen) 
E)  liver cells that detoxify hydrogen peroxideF) None of the above
G) B) and D)

Question 7

Cyanide stops the production of ATP.Which of the following processes would be affected?

Accepted Answer

A)  active transport
B)  filtration
C)  facilitated diffusion
D)  osmosis
E)  simple diffusionF) C) and D)
G) C) and E)

Question 8

Which of the following could be used to study general features of cells?

Accepted Answer

A)  binoculars
B)  scanning electron microscope
C)  transmission electron microscope
D)  light microscope
E)  a magnifying glassF) None of the above
G) A) and D)

Question 9

Which molecule determines the fluidity of the plasma membrane?

Accepted Answer

A)   Protein
B)   Cholesterol
C)   PhospholipidD) B) and C)
E) A) and B)

Question 10

Cytokinesis is completed at the end of this phase.

Accepted Answer

A)  interphase
B)  prophase
C)  metaphase
D)  anaphase
E)  telophaseF) A) and E)
G) A) and B)

Question 11

What molecule(s) cause(s) a portion of a DNA molecule to unwind for transcription?

Accepted Answer

A)  poly-A tail
B)  transcription factors
C)  spliceosomes
D)  RNA ploymerase
E)  7-methylguanosine capF) None of the above
G) B) and C)

Question 12

Glycolipids would contain both lipids and

Accepted Answer

A)  amino acids.
B)  electrolytes.
C)  proteins.
D)  cholesterol.
E)  carbohydrates.F) None of the above
G) A) and E)

Question 13

A group of cells was treated with a proteolytic (protein-digesting) enzyme.Which of the following processes would be least affected by this treatment?

Accepted Answer

A)  use of carrier molecules in facilitated diffusion
B)  sodium-potassium exchange pump
C)  secondary active transport
D)  diffusion of lipid-soluble molecules through the plasma membrane
E)  diffusion of sodium through sodium membrane channelsF) All of the above
G) B) and C)

Question 14

Internal structures of a cell that carry out specialized metabolic tasks are called _____.

Accepted Answer

A)   cytoskeletal elements
B)   enzymes
C)   ribosomes
D)   organellesE) B) and D)
F) B) and C)

Question 15

Solution A contains 5 grams of sugar per liter while solution B contains 2 grams of sugar per liter.The solutions are separated by a selectively permeable membrane.If the solvent in both solutions is water,predict in which direction most of the water molecules will move.

Accepted Answer

A)  move by simple diffusion from solution A to solution B
B)  move by osmosis from solution B to solution A
C)  move by active transport from solution B to solution A
D)  move by filtration from solution A to solution B
E)  There will be no movement of water.F) D) and E)
G) C) and D)

Question 16

-Red blood cells (RBCs) have been placed in three different solutions: hypotonic,hypertonic,isotonic.What is the condition of the RBC in solution "B"?

Accepted Answer

A)  crenated
B)  hypertonic solution
C)  isotonic solution
D)  hemolyzed
E)  hypotonic solutionF) A) and B)
G) A) and E)

Question 17

-Answer these questions about chromosome structure.What does "B" represent?

Accepted Answer

A)  chromatid
B)  chromatin
C)  proteins
D)  chromosome
E)  centromereF) A) and B)
G) B) and E)

Question 18

-The cell is the basic unit of life.All cellular structures exhibit special functions.Match the structure with its function.What is the function of "A"?

Accepted Answer

A)  site of protein synthesis
B)  major site of ATP synthesis when oxygen is available
C)  outer boundary of cell,controls entry and exit of substances
D)  contains digestive enzymes
E)  directs cellular activities,contains DNAF) D) and E)
G) B) and D)

Question 19

A runner produced hypotonic sweat while running a marathon in hot weather.After the race,he drank large volumes of water.As a result of the water intake,his body cells will

Accepted Answer

A)  shrink.
B)  swell.
C)  crenate.
D)  shrivel.
E)  not change.F) B) and C)
G) A) and C)

Question 20

Cilia and flagella are distinguished from each other on the basis of

Accepted Answer

A)  width and numbers.
B)  length and numbers.
C)  depth and numbers.
D)  length and width.
E)  None of these choices is correct.F) A) and C)
G) None of the above

Exam 3: Cell Biology

A group of cells was treated with a proteolytic (protein-digesting) enzyme.Which of the following processes would be least affected by this treatment?

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A runner produced hypotonic sweat while running a marathon in hot weather.After the race,he drank large volumes of water.As a result of the water intake,his body cells will

Correct AnswerverifiedShow Answer

Which of the following is an organelle of locomotion?

Correct AnswerverifiedShow Answer

Which type of transport proteins use cell energy to move molecules across the plasma membrane?

Correct AnswerverifiedShow Answer

Glycolipids would contain both lipids and

Correct AnswerverifiedShow Answer

-The cell is the basic unit of life.All cellular structures exhibit special functions.Match the structure with its function.What is the function of "A"?

Correct AnswerverifiedShow Answer

In one form of endocytosis a molecule binds to a specific protein on the cell surface and triggers vesicle formation and endocytosis.What type of transport is this?

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What molecule(s) cause(s) a portion of a DNA molecule to unwind for transcription?

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Cyanide stops the production of ATP.Which of the following processes would be affected?

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-Red blood cells (RBCs) have been placed in three different solutions: hypotonic,hypertonic,isotonic.What is the condition of the RBC in solution "B"?

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Which molecule determines the fluidity of the plasma membrane?

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All of the following processes can move substances out of a cell EXCEPT

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Cilia and flagella are distinguished from each other on the basis of

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Which of the following could be used to study general features of cells?

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What type of cell has abundant ribosomes?

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The intracellular digestive organelle of a cell is the

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Cytokinesis is completed at the end of this phase.

Correct AnswerverifiedShow Answer

Solution A contains 5 grams of sugar per liter while solution B contains 2 grams of sugar per liter.The solutions are separated by a selectively permeable membrane.If the solvent in both solutions is water,predict in which direction most of the water molecules will move.

Correct AnswerverifiedShow Answer

-Answer these questions about chromosome structure.What does "B" represent?

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Internal structures of a cell that carry out specialized metabolic tasks are called _____.

Correct AnswerverifiedShow Answer

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