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Some proteins within a cell can be viewed with ________.


A) the human eye
B) an electron microscope
C) a light microscope
D) a magnifying glass
E) a dissecting microscope

F) A) and B)
G) All of the above

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Cell size is limited because _____________ is critical to a cell's function.


A) the number of microvilli
B) the size of the nucleus
C) cilia movement
D) surface area to volume ratio
E) ability to photosynthesize

F) A) and E)
G) C) and D)

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Chromosomes are _____________.


A) condensed vesicles
B) expanded ribosomes
C) expanded polysaccharides
D) condensed chromatin
E) cell recognition proteins

F) None of the above
G) A) and B)

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_____ are bacterial structures involved in the passage of DNA into or out of the cell.


A) Flagella
B) Fimbriae
C) Conjugation pili
D) Cilia
E) Capsule

F) A) and E)
G) A) and B)

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What function does the nucleolus have?


A) houses the chromatin
B) prepares products for export from the cell
C) contains enzymes for intracellular digestion
D) contains the majority of cellular DNA
E) codes for the synthesis of ribosomal RNA

F) B) and E)
G) A) and E)

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E

Receptor proteins


A) receive incoming nutrients and store them until they are needed by the cell.
B) only function in very specific cell types that receive sensory information.
C) transmit information from outside the cell so that the cell can respond to stimuli.
D) are found embedded in the nuclear membrane so transmit information on how to make a protein from the DNA to the cell's cytoplasm.
E) receive large molecules and transmit them through the membrane.

F) B) and E)
G) A) and E)

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The plasma membrane's hydrophilic part faces the outside of the cell and the cytoplasm.

A) True
B) False

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Which of the following is not a type of intracellular protein?


A) actin filaments
B) myosin
C) cellulose
D) microtubules
E) keratin

F) B) and D)
G) B) and C)

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What statement below is correct when comparing plant & animal cells?


A) Plant cells have a cell wall and animal cells have a plasma membrane.
B) Plant cells have a plasma membrane and animal cells have a cell wall.
C) Both plant and animal cells have a plasma membrane and plant cells also have a cell wall.
D) Both plant and animal cells have a plasma membrane and a cell wall.
E) Both plant and animal cells have a cell wall but only animal cells have a plasma membrane.

F) D) and E)
G) A) and D)

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Without tight junctions in certain tissues


A) cells would not be able to communicate with each other.
B) fluids may leak out past the barrier the junction would create.
C) the tissues would not be able to expand and stretch without damage.
D) nutrients would not be able to be passed from cell to cell.
E) cells would not be able to migrate during their development.

F) C) and D)
G) A) and D)

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Surface to volume ratio is an important characteristic for cell function; some cells increase their ratio by


A) developing finger-like projections.
B) having multiple membranes surrounding them.
C) growing extremely large to increase their surface area.
D) using amoeboid movement to spread out farther.
E) using phagocytosis to pull the membrane inward.

F) A) and B)
G) A) and E)

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A

Mitochondria & chloroplasts are similar in that they both ________; but are different in that mitochondria, but not chloroplasts, ______________.


A) are involved in energy conversions; are found in all eukaryotic cells
B) are found in bacteria; are used to capture radiant energy and convert it into chemical energy
C) are organelles involved in the production of proteins; are found in animal cells
D) produce glucose needed for cellular processes; are found in plant cells
E) are responsible for cell movements; help to produce the microtubules seen in cilia

F) A) and B)
G) All of the above

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A

Which of the following organelles would form a membrane bound package also known as a vesicle?


A) Golgi apparatus
B) lysosomes
C) mitochondria
D) ribosomes
E) chloroplasts

F) B) and E)
G) A) and D)

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Without receptor proteins, a cell would not be able to


A) transport water into the cytoplasm.
B) bind to signal proteins from other parts of the body.
C) allow the passage of H+ ions into the cell.
D) perform metabolic reactions.
E) divide.

F) A) and D)
G) A) and C)

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Which of the following structures would NOT be seen in a prokaryotic cell?


A) cell membrane
B) nucleus
C) ribosomes
D) flagella
E) chromosomes

F) All of the above
G) B) and E)

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The nuclear membrane differs from the plasma membrane in that the nuclear membrane is a single layer of phospholipids.

A) True
B) False

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The main structural component of a plant cell wall is


A) cytoskeleton.
B) cellulose.
C) extracellular matrix.
D) plasmodesmata.
E) middle lamella.

F) All of the above
G) C) and E)

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Resolving power is


A) the ability to tell two points apart as separate points.
B) the ability to make an object larger.
C) the focusing mechanism used to bring objects clearly into view.
D) the optimum power to most clearly view the entire specimen.
E) the depth of the specimen clearly in focus.

F) C) and D)
G) A) and E)

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Which of the following is not a function of junction proteins?


A) to stitch cells together so that they do not move apart.
B) to allow information to pass between adjacent cells.
C) to stitch cells together so that they are bound into a functional organ.
D) to permit cells to recognize one another.
E) to allow cell-to-cell communication.

F) B) and C)
G) A) and D)

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There is an antibiotic called streptomycin that doctors prescribe for infection. The antibiotic combines with the bacteria's ribosomes causing them to lose their function. Consequently the cell dies and so the person gets better! In other words, the antibiotic destroys bacteria by


A) stopping photosynthesis.
B) preventing them from packaging materials.
C) stopping the production of ATP energy.
D) not allowing them to produce proteins.
E) stops them from being able to move.

F) B) and D)
G) C) and E)

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