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As a cell increases in size, the


A) surface area increases as the volume decreases.
B) surface area, volume and surface area volume ratio increases.
C) surface area and volume increase, but the surface area: volume ratio decreases.
D) surface area and volume decreases the surface area: volume ratio increases.

E) C) and D)
F) None of the above

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C

Chloroplasts are to ____________ as ___________ are to aerobic respiration.


A) stroma, cristae
B) photosynthesis, mitochondria
C) thylakoid membranes, matrix
D) protein synthesis, lysosomes

E) B) and C)
F) A) and D)

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Which statement is NOT true about bacteria?


A) Bacteria contain membrane bound organelles.
B) Some are photosynthetic.
C) Some are motile due to flagella.
D) All bacteria are prokaryotes.
E) Bacteria have a cell wall that contains peptidoglycan.

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

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Use Figures A, B and C to answer Questions 40 - 44. Figure A is an 8-cm. cube. Figure B is eight, 4-cm cubes. Figure C is sixty-four, 2-cm cubes. Use Figures A, B and C to answer Questions 40 - 44. Figure A is an 8-cm. cube. Figure B is eight, 4-cm cubes. Figure C is sixty-four, 2-cm cubes.   Topic: Cell Theory -What Figure has the greatest volume (height x width x length x number of cubes) ? A)  Figure A B)  Figure B C)  Figure C D)  All of these have the same volume. Topic: Cell Theory -What Figure has the greatest volume (height x width x length x number of cubes) ?


A) Figure A
B) Figure B
C) Figure C
D) All of these have the same volume.

E) A) and B)
F) A) and C)

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Which of the following help direct the movement of materials or organelles throughout the cell?


A) rough endoplasmic reticulum
B) cytoskeleton
C) smooth endoplasmic reticulum
D) all of the choices are true

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

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Which of the following organelles is found uniquely in autotrophic, eukaryotic cells and not heterotrophic, eukaryotic cells?


A) lysosomes
B) ribosomes
C) rough endoplasmic reticulum
D) chloroplast

E) A) and C)
F) B) and C)

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The plant cell's central vacuole


A) provides the plant cell with support.
B) stores nutrients and cellular waste products.
C) is a reservoir for water.
D) All of the choices are correct.

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

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You are a scientist who wants to produce large amounts of the protein insulin that is used to facilitate the entry of glucose into cells. You know that insulin genes may be introduced into bacteria by way of a plasmid vector. These bacteria may then be used as 'micro-manufacturers' of insulin. Your laboratory technicians explore various methods of producing the desired bacteria, but you are not sure how many and which of the bacterial cells have been transfected (have the plasmid with the insulin gene). Propose a way to determine which bacterial cells have been transfected with the engineered plasmid and are able to produce insulin.

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The answer may vary. One way of determining if the process has been successful is to add (ligate) the gene that confers antibiotic resistance to the insulin gene you are inserting into the plasmid. Now every plasmid that contains the insulin gene (your target gene) will not be killed by antibiotics. After you introduce the engineered plasmids (the one with the target gene -insulin- and the antibiotic resistant marker) into your bacterial cells, you incubate them in a nutrient broth that also contains antibiotic (usually ampicillin). Any cells that were not transfected (that do not have your target gene in them) are killed by the antibiotic. The ones that do have the gene also have the antibiotic resistant gene, and therefore survive the selection process. You now know which bacteria have the insulin genes.

Which is NOT a characteristic of mitochondria?


A) A mitochondrion has two membranes.
B) Mitochondria are the site of cellular respiration.
C) Mitochondria have a single membrane for cellular respiration.
D) Mitochondria contain DNA and ribosomes.
E) The inner space of the mitochondrion contains a fluid matrix.

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

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Which statement about the nucleus is incorrect?


A) The nucleus contains the genetic material of the cell.
B) The nucleus contains the information that ribosomes use to carry out protein synthesis.
C) The nucleus contains the instructions for copying itself.
D) The nucleus contains the information that ribosomes use to carry out cellular respiration.

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

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Which is NOT true of eukaryotic cells?


A) A true nucleus contains the chromosomes.
B) Eukaryotic cells contain membrane-bounded compartments.
C) They contain ribosomes that are smaller than those of prokaryotic cells.
D) They all contain mitochondria.
E) They contain many organelles in the cytoplasm.

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

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Which of the following features is NOT found in a bacterial cell? -26-2013


A) cell wall
B) nucleus
C) cell membrane
D) nucleoid region
E) ribosome

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

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What is the smallest unit of living matter?


A) atom
B) element
C) Golgi apparatus
D) cell
E) nucleus

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

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Match the items below with their descriptions: Art-based; Matching Match the items below with their descriptions: Art-based; Matching

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What are the potential consequences of an individual who suffers from a genetic disorder that prohibits them from properly forming microtubules ? rev: 11_01_2012


A) Their cells will not be able to maintain the normal cellular shape.
B) The cells may not be able to divide correctly during cellular division.
C) The cilia located on the respiratory cells may have a limited function.
D) All of the answer choices are possible consequences of improperly formed microtubules.

E) B) and C)
F) A) and B)

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D

All cells have a cell wall that regulates the passage of molecules into and out of the cell.

A) True
B) False

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Use Figures A, B and C to answer Questions 40 - 44. Figure A is an 8-cm. cube. Figure B is eight, 4-cm cubes. Figure C is sixty-four, 2-cm cubes. Use Figures A, B and C to answer Questions 40 - 44. Figure A is an 8-cm. cube. Figure B is eight, 4-cm cubes. Figure C is sixty-four, 2-cm cubes.   Topic: Cell Theory -What figure has the greatest surface area : volume ratio? A)  Figure A B)  Figure B C)  Figure C D)  All of these are the same. Topic: Cell Theory -What figure has the greatest surface area : volume ratio?


A) Figure A
B) Figure B
C) Figure C
D) All of these are the same.

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

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_______ are to ribosomes as lipids are to _________.


A) Carbohydrates; rough endoplasmic reticulum
B) Nucleoli; lysosomes
C) Sugars; peroxisomes
D) Proteins; smooth endoplasmic reticulum

E) A) and C)
F) None of the above

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Mitochondria are thought to be derived from aerobic bacteria that became part of the eukaryotic cell through endosymbiosis.

A) True
B) False

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Cell biologists have introduced radioactively labeled carbohydrates, fats and amino acids to living cells, allowed time for cell metabolism, and then disrupted the cells in a blender and separated out the various cell organelles from the cytoplasm. They found the radioactive molecules could soon be detected as part of various cellular compounds, although the visible cell structures appeared unchanged. This leads us to conclude that


A) these "food" molecules are used only for energy.
B) most cell components are constantly being broken down and rebuilt.
C) radioactivity was transferred from the introduced molecules to the resident stable molecules.
D) molecules diffuse at random through the cytoplasm and into cell organelles.
E) radioactivity has an unusual role in metabolism of living cells.

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

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