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Adrenoleukodystrophy is a genetic disorder that affects the nervous system. The gene abnormality causes a lack of an enzyme that breaks down very long chain fatty acids outside the cell. The resulting over accumulation causes brain degeneration. What organelle is affected by the gene abnormality?


A) Rough endoplasmic reticulum
B) Smooth endoplasmic reticulum
C) Mitochondrion
D) Peroxisome

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

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What solution is isotonic to red blood cells?


A) 0.9 percent NaCl solution
B) Distilled water
C) 0.9 percent glucose solution
D) 0.5 percent glucose solution
E) 1.4 percent galactose solution

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

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Specialized structures within cells are called organelles.

A) True
B) False

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In anaphase of mitosis, centromeres and duplicated parts of chromosomes separate.

A) True
B) False

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A structure that transports secretions from the rough ER to the Golgi apparatus is a vesicle.

A) True
B) False

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Movement of molecules through a membrane by filtration depends upon __________ pressure.


A) osmotic
B) barometric
C) atmospheric
D) hydrostatic

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

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What are attached to the surface of rough endoplasmic reticulum?


A) Nucleoli
B) Ribosomes
C) Chromosomes
D) Lysosomes
E) Mitochondria

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

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Which type of cell has many mitochondria?


A) Red blood cell
B) Fat cell
C) Nerve cell
D) Skin cell
E) Muscle cell

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

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What activity takes place on ribosomes?


A) Protein synthesis
B) DNA synthesis
C) Carbohydrate synthesis
D) Energy acquisition
E) Cell division

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

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What is a cleavage furrow?


A) Cellular constriction that occurs during interphase
B) Cellular constriction that occurs towards the end of mitosis
C) Cellular constriction that forms four cells from one
D) A partitioning of the nucleus
E) Cellular constriction that forms as mitosis begins

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

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Interphase is a "time out" in the cell cycle, when the cell rests its synthetic activities.

A) True
B) False

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What type of cell division results in the formation of a sperm cell?


A) Meiosis
B) Mitosis
C) Cytokinesis
D) Cleavage

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

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What term describes the spread of cancer cells beyond the tissue where they originated?


A) Mitosis
B) Apoptosis
C) Metastasis
D) Angiogenesis
E) Cytokinesis

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

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Which of the following does not describe a cell undergoing apoptosis?


A) The cell rounds up and bulges.
B) The cell retains the ability to divide continuously.
C) Chromatin condenses and enzymes cut the chromosomes into equal-sized pieces.
D) The cell breaks apart into membrane-enclosed fragments.
E) The cell dies.

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

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The basic framework of a cell membrane is a triple layer of lipid molecules.

A) True
B) False

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What is the correct sequence of the phases of mitosis?


A) Prophase, metaphase, telophase, anaphase
B) Prophase, metaphase, anaphase, telophase
C) Telophase, prophase, metaphase, anaphase
D) Anaphase, metaphase, prophase, telophase
E) Metaphase, anaphase, telophase, prophase

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

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How are membrane proteins classified?


A) By their position
B) By their size
C) By their abundance
D) By their amino acid diversity
E) By their oiliness

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

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If the fluid outside of a cell membrane contains a greater concentration of dissolved particles than the fluid inside the cell, how is this extracellular fluid described?


A) The extracellular solution is isotonic to the intracellular fluid.
B) The extracellular fluid is iso-osmotic to the intracellular fluid.
C) The extracellular fluid is hypertonic to the intracellular fluid.
D) The extracellular solution is hypotonic to the intracellular fluid.
E) The extracellular solution is isometric to the intracellular fluid.

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

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What would occur if the concentration of glucose in the water outside of a cell is higher than the concentration inside the cell?


A) Water will enter the cell by osmosis.
B) Water will leave the cell by osmosis.
C) Glucose will enter the cell by osmosis.
D) Glucose will leave the cell by osmosis.

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

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The level of carbon dioxide, a waste product of metabolism, is higher ________ the cell.


A) inside
B) outside

C) A) and B)
D) undefined

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