Question 1

Apoptosis begins with a cell's receiving a signal to die.

Accepted Answer

A) True 
 B)False

Question 2

Bone cells and muscle cells differ in structure and function because

Accepted Answer

A)   each expresses a different subset of genes.
B)   each has different genes.
C)   each has different chromosomes.
D)   they express the same subset of genes.E) None of the above
F) A) and D)

Question 3

Filtration requires hydrostatic pressure.

Accepted Answer

A) True 
 B)False

Question 4

The major components of the cell membrane are

Accepted Answer

A)   lipids and carbohydrates.
B)   proteins and carbohydrates.
C)   lipids and proteins.
D)   carbohydrates and polysaccharides.E) All of the above
F) None of the above

Question 5

During interphase, a cell rests.

Accepted Answer

A) True 
 B)False

Question 6

A protein that spans the cell membrane is termed a(n)

Accepted Answer

A)   receptor protein.
B)   integral protein.
C)   peripheral protein.
D)   anchoring protein.E) A) and B)
F) A) and C)

Question 7

What characteristic do simple diffusion and facilitated diffusion share?

Accepted Answer

A)   Both require cellular energy for the transport of substances.
B)   Both move water across a semipermeable membrane.
C)   Both require a special carrier molecule to move substances across the membrane.
D)   Both move a substance from a region of higher concentration to one of lower concentration without using cellular energy.E) A) and B)
F) A) and C)

Question 8

The structures in the nucleus that serve as a "mitotic clock" are

Accepted Answer

A)   telomeres.
B)   kinases.
C)   ribosomes.
D)   hormones.E) C) and D)
F) A) and B)

Question 9

Which of the following does not influence the rate of diffusion?

Accepted Answer

A)   Distance
B)   The concentration of the substance
C)   The amount of energy available for transport molecules
D)   The molecular weight of the diffusing moleculesE) B) and C)
F) All of the above

Question 10

Cells lose water when placed in a __________ solution.

Accepted Answer

A)   hypotonic
B)   hypertonic
C)   isotonic
D)   diluteE) A) and D)
F) A) and C)

Question 11

Which of the following describes a lysosome?

Accepted Answer

A)   A double-membraned organelle that is the "powerhouse" of the cell
B)   A complex network of interconnected membranes that is a communication system in the cell
C)   A tiny, membranous sac that contains enzymes that degrade worn cell parts and debris
D)   A nonmembranous structure that is essential for mitosisE) A) and D)
F) A) and B)

Question 12

A telomere is a type of hormone that controls the cell cycle.

Accepted Answer

A) True 
 B)False

Question 13

DNA molecules are in the nucleus

Accepted Answer

A)   as free molecules.
B)   complexed with protein, forming chromatin fibers.
C)   complexed with protein, forming nucleoli.
D)   complexed with protein on the nuclear envelope.E) All of the above
F) B) and D)

Question 14

The organelle where energy is captured and stored in the chemical bonds of ATP is a

Accepted Answer

A)   mitochondrion.
B)   ribosome.
C)   peroxisome.
D)   Golgi apparatus.E) All of the above
F) C) and D)

Question 15

Which of the following is isotonic to red blood cells?

Accepted Answer

A)   0.9% NaCl solution
B)   Distilled water
C)   0.9% glucose solution
D)   AlcoholE) B) and D)
F) A) and C)

Question 16

All cell types can divide a limitless number of times.

Accepted Answer

A) True 
 B)False

Question 17

All cell types divide at the same rate.

Accepted Answer

A) True 
 B)False

Question 18

Cellular adhesion molecules are

Accepted Answer

A)   peripheral proteins.
B)   integral proteins.
C)   lipids.
D)   receptors.E) B) and C)
F) All of the above

Question 19

The defining characteristic of a stem cell is

Accepted Answer

A)   self-repair.
B)   self-renewal.
C)   the ability to turn into a cancer cell.
D)   origin from a progenitor cell.E) C) and D)
F) A) and B)

Question 20

A hypertonic solution

Accepted Answer

A)   has a greater concentration (number)  of solute particles than do the cells in the solution.
B)   would cause cells to swell when placed in the solution.
C)   has a lower osmotic pressure than do the cells in the solution.
D)   causes water to rush inside cells.E) A) and D)
F) A) and C)

Exam 3: Cells

A protein that spans the cell membrane is termed a(n)

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The major components of the cell membrane are

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A hypertonic solution

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Which of the following does not influence the rate of diffusion?

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The structures in the nucleus that serve as a "mitotic clock" are

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Cellular adhesion molecules are

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The organelle where energy is captured and stored in the chemical bonds of ATP is a

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Filtration requires hydrostatic pressure.

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Bone cells and muscle cells differ in structure and function because

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What characteristic do simple diffusion and facilitated diffusion share?

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The defining characteristic of a stem cell is

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Which of the following describes a lysosome?

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During interphase, a cell rests.

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Which of the following is isotonic to red blood cells?

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All cell types can divide a limitless number of times.

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All cell types divide at the same rate.

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DNA molecules are in the nucleus

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Cells lose water when placed in a __________ solution.

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A telomere is a type of hormone that controls the cell cycle.

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Apoptosis begins with a cell's receiving a signal to die.

Correct AnswerverifiedShow Answer

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