Question 1

The cytoplasm consists of organelles suspended in _________.

Accepted Answer

The answer of The cytoplasm consists of organelles suspended in...

Question 2

Cytoskeletal structures that are not found in all cell types are

Accepted Answer

A)   microtubules.
B)   microfilaments.
C)   myofibrils.
D)   intermediate filaments.E) B) and D)
F) B) and C)

Question 3

Peroxisomes and lysosomes are sacs that contain enzymes.

Accepted Answer

A) True 
 B)False

Question 4

A cell that can divide to give rise to any cell type is

Accepted Answer

A)   pluripotent.
B)   multipotent.
C)   totipotent.
D)   a differentiated cell.E) C) and D)
F) B) and C)

Question 5

The nucleolus contains

Accepted Answer

A)   DNA only.
B)   RNA and protein.
C)   DNA and protein.
D)   RNA only.E) A) and D)
F) A) and C)

Question 6

In phagocytosis

Accepted Answer

A)   a cell membrane engulfs solid particles.
B)   a particle enters a cell by moving down its concentration gradient.
C)   a cell membrane engulfs droplets.
D)   a carrier molecule moves a substance across a cell membrane using ATP.E) A) and D)
F) A) and B)

Question 7

The framework of a cell membrane is a lipid bilayer.

Accepted Answer

A) True 
 B)False

Question 8

Solutions that have a higher osmotic pressure than body fluids are _________.

Accepted Answer

The answer of Solutions that have a higher osmotic pressure...

Question 9

A hypotonic solution

Accepted Answer

A)   has a lower concentration (number)  of solute particles than do the cells in the solution.
B)   would cause cells in the solution to lose water.
C)   has a higher osmotic pressure than do the cells in the solution.
D)   causes cells to shrink.E) A) and D)
F) None of the above

Question 10

An isotonic solution

Accepted Answer

A)   has a greater concentration of solute particles than a cell.
B)   has more water entering than leaving a cell.
C)   has the same osmotic pressure as the cells in the solution.
D)   causes a cell to shrink.E) A) and D)
F) C) and D)

Question 11

Stem cells may be activated after an injury, helping to heal.

Accepted Answer

A) True 
 B)False

Question 12

A young man who ran 6 miles a day throughout high school is injured during his first season running cross country in college, and must rest for three months, then gradually begin exercising again. The skeletal muscles in his lower limbs decrease in size during this prolonged period of inactivity. The organelles that break down his muscle protein are

Accepted Answer

A)   peroxisomes.
B)   lysosomes.
C)   centrosomes.
D)   ribosomes.E) All of the above
F) A) and B)

Question 13

The average number of divisions that a human cell cultured in a dish can undergo is

Accepted Answer

A)   10-20.
B)   30-40.
C)   40-60.
D)   60-100.E) A) and D)
F) A) and C)

Question 14

Stages of the cell cycle unfold in the following order:

Accepted Answer

A)   differentiation, cytoplasmic division, mitosis, interphase
B)   interphase, differentiation, cytoplasmic division, mitosis
C)   interphase, mitosis, cytoplasmic division, differentiation
D)   mitosis, interphase, cytoplasmic division, differentiationE) A) and D)
F) A) and C)

Question 15

Stem cells taken from a person to be used to treat a disease in that same person come from

Accepted Answer

A)   embryos or fetuses.
B)   the person or a blood relative.
C)   existing cell populations or reprogrammed cells.
D)   two different cell types.E) B) and D)
F) A) and B)

Question 16

A partly specialized cell that is the daughter of a stem cell is a ________ cell.

Accepted Answer

The answer of A partly specialized cell that is the...

Question 17

The cellular abnormality that causes cystic fibrosis is

Accepted Answer

A)   absence of the ability to feel pain.
B)   abnormal chloride channels that trap salt inside cells lining the lung passageways.
C)   abnormal potassium channels in heart muscle.
D)   extra receptors for a growth factor.E) A) and D)
F) B) and C)

Question 18

The two types of genes that, when abnormal, cause cancer are

Accepted Answer

A)   kinases and cyclins.
B)   oncosuppressors and tumor activators.
C)   metastatic activators and apoptosis stimulators.
D)   tumor suppressors and oncogenes.E) All of the above
F) C) and D)

Question 19

Abnormal rates of mitosis can lead to poor wounding healing and delayed growth.

Accepted Answer

A) True 
 B)False

Question 20

Cancer can result if

Accepted Answer

A)   mitosis is too infrequent.
B)   mitosis is too frequent or does not stop.
C)   the cell cycle runs backward.
D)   the cell cycle stops.E) B) and D)
F) All of the above

Exam 3: Cells

Correct Answer
verified

Stem cells may be activated after an injury, helping to heal.

Correct Answer
verified

A cell that can divide to give rise to any cell type is

Correct Answer
verified

Cancer can result if

Correct Answer
verified

The average number of divisions that a human cell cultured in a dish can undergo is

Correct Answer
verified

In phagocytosis

Correct Answer
verified

Stem cells taken from a person to be used to treat a disease in that same person come from

Correct Answer
verified

The two types of genes that, when abnormal, cause cancer are

Correct Answer
verified

The nucleolus contains

Correct Answer
verified

Solutions that have a higher osmotic pressure than body fluids are _________.

Correct Answer
verified

Stages of the cell cycle unfold in the following order:

Correct Answer
verified

The framework of a cell membrane is a lipid bilayer.

Correct Answer
verified

Peroxisomes and lysosomes are sacs that contain enzymes.

Correct Answer
verified

The cytoplasm consists of organelles suspended in _________.

Correct Answer
verified

Cytoskeletal structures that are not found in all cell types are

Correct Answer
verified

An isotonic solution

Correct Answer
verified

The cellular abnormality that causes cystic fibrosis is

Correct Answer
verified

Abnormal rates of mitosis can lead to poor wounding healing and delayed growth.

Correct Answer
verified

A hypotonic solution

Correct Answer
verified

A partly specialized cell that is the daughter of a stem cell is a ________ cell.

Correct Answer
verified

Exam 3: Cells

Correct AnswerverifiedShow Answer

Stem cells may be activated after an injury, helping to heal.

Correct AnswerverifiedShow Answer

A cell that can divide to give rise to any cell type is

Correct AnswerverifiedShow Answer

Cancer can result if

Correct AnswerverifiedShow Answer

The average number of divisions that a human cell cultured in a dish can undergo is

Correct AnswerverifiedShow Answer

In phagocytosis

Correct AnswerverifiedShow Answer

Stem cells taken from a person to be used to treat a disease in that same person come from

Correct AnswerverifiedShow Answer

The two types of genes that, when abnormal, cause cancer are

Correct AnswerverifiedShow Answer

The nucleolus contains

Correct AnswerverifiedShow Answer

Solutions that have a higher osmotic pressure than body fluids are _________.

Correct AnswerverifiedShow Answer

Stages of the cell cycle unfold in the following order:

Correct AnswerverifiedShow Answer

The framework of a cell membrane is a lipid bilayer.

Correct AnswerverifiedShow Answer

Peroxisomes and lysosomes are sacs that contain enzymes.

Correct AnswerverifiedShow Answer

The cytoplasm consists of organelles suspended in _________.

Correct AnswerverifiedShow Answer

Cytoskeletal structures that are not found in all cell types are

Correct AnswerverifiedShow Answer

An isotonic solution

Correct AnswerverifiedShow Answer

The cellular abnormality that causes cystic fibrosis is

Correct AnswerverifiedShow Answer

Abnormal rates of mitosis can lead to poor wounding healing and delayed growth.

Correct AnswerverifiedShow Answer

A hypotonic solution

Correct AnswerverifiedShow Answer

A partly specialized cell that is the daughter of a stem cell is a ________ cell.

Correct AnswerverifiedShow Answer

Correct Answer
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