Question 1

Which of the following correctly describes the structural organization of the cell membrane?

Accepted Answer

A)  A solid,rigid layer of phospholipid with loosely bound protein molecules
B)  A bilayer of phospholipid molecules in which protein molecules are embedded and can move
C)  Rigid layers of protein molecules in which carbohydrate molecules are suspended
D)  Three layers;lipid on the inside,protein in the middle,and carbohydrates (and polysaccharides) on the outsideE) A) and B)
F) None of the above

Question 2

If a nerve cell has a greater concentration of Na+ on the outside and K+ on the inside of the cell membrane,then the movement of Na+ outside and K+ inside is by diffusion.

Accepted Answer

A) True 
 B)False  False

Question 3

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 muscle size in his lower limbs decreases 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) B) and C)
F) C) and D)

Question 4

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) B) and C)

Question 5

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

Question 6

Cytoskeletal structures that are not found in all cell types are

Accepted Answer

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

Question 7

Which organelle contains the nucleolus?

Accepted Answer

A)  The mitochondrion
B)  The endoplasmic reticulum
C)  The Golgi apparatus
D)  The nucleusE) B) and D)
F) B) and C) D

Question 8

Endoplasmic reticulum is best described as a

Accepted Answer

A)  component of the cytoskeleton.
B)  cellular inclusion.
C)  nuclear pore.
D)  network of interconnected membranes.E) B) and C)
F) C) and D)

Question 9

Adrenoleukodystrophy is caused by deficiency of a protein in the outer membrane of

Accepted Answer

A)  cells.
B)  lysosomes.
C)  mitochondria.
D)  peroxisomes.E) A) and B)
F) A) and C)

Question 10

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) All of the above
F) A) and C) C

Question 11

Filtration is the movement of molecules through a membrane

Accepted Answer

A)  from low concentration to high concentration.
B)  from low to high hydrostatic pressure.
C)  by hydrostatic pressure that is greater on one side of the membrane than on the other.
D)  from low osmotic pressure to high osmotic pressure.E) A) and D)
F) C) and D)

Question 12

Loss of cell cycle control can cause cancer.

Accepted Answer

A) True 
 B)False

Question 13

A nerve cell and a muscle cell have the same genes,but express different subsets of them.

Accepted Answer

A) True 
 B)False

Question 14

Microfilaments and microtubules are part of the cytoskeleton.

Accepted Answer

A) True 
 B)False

Question 15

Transcytosis combines diffusion and active transport.

Accepted Answer

A) True 
 B)False

Question 16

Molecules bind to receptor sites and are enclosed in vesicles in the process of

Accepted Answer

A)  pinocytosis.
B)  phagocytosis.
C)  receptor-mediated endocytosis.
D)  exocytosis.E) All of the above
F) A) and B)

Question 17

If the concentration of glucose in the water outside of a cell is higher than the concentration inside,

Accepted Answer

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) A) and D)
F) All of the above

Question 18

The process by which cells specialize is called differentiation.

Accepted Answer

A) True 
 B)False

Question 19

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

Question 20

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) None of the above
F) B) and C)

Exam 3: Cells

Which of the following correctly describes the structural organization of the cell membrane?

Correct Answer
verified

If a nerve cell has a greater concentration of Na⁺ on the outside and K⁺ on the inside of the cell membrane,then the movement of Na⁺ outside and K⁺ inside is by diffusion.

Correct Answer
verified
False

Correct Answer
verified

Cancer can result if

Correct Answer
verified

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

Correct Answer
verified

Cytoskeletal structures that are not found in all cell types are

Correct Answer
verified

Which organelle contains the nucleolus?

Correct Answer
verified
D

Endoplasmic reticulum is best described as a

Correct Answer
verified

Adrenoleukodystrophy is caused by deficiency of a protein in the outer membrane of

Correct Answer
verified

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

Correct Answer
verified
C

Filtration is the movement of molecules through a membrane

Correct Answer
verified

Loss of cell cycle control can cause cancer.

Correct Answer
verified

A nerve cell and a muscle cell have the same genes,but express different subsets of them.

Correct Answer
verified

Microfilaments and microtubules are part of the cytoskeleton.

Correct Answer
verified

Transcytosis combines diffusion and active transport.

Correct Answer
verified

Molecules bind to receptor sites and are enclosed in vesicles in the process of

Correct Answer
verified

If the concentration of glucose in the water outside of a cell is higher than the concentration inside,

Correct Answer
verified

The process by which cells specialize is called differentiation.

Correct Answer
verified

The cellular abnormality that causes cystic fibrosis is

Correct Answer
verified

A hypotonic solution

Correct Answer
verified

Exam 3: Cells

Which of the following correctly describes the structural organization of the cell membrane?

Correct AnswerverifiedShow Answer

If a nerve cell has a greater concentration of Na+ on the outside and K+ on the inside of the cell membrane,then the movement of Na+ outside and K+ inside is by diffusion.

Correct AnswerverifiedFalse

Correct AnswerverifiedShow Answer

Cancer can result if

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Cytoskeletal structures that are not found in all cell types are

Correct AnswerverifiedShow Answer

Which organelle contains the nucleolus?

Correct AnswerverifiedD

Endoplasmic reticulum is best described as a

Correct AnswerverifiedShow Answer

Adrenoleukodystrophy is caused by deficiency of a protein in the outer membrane of

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedC

Filtration is the movement of molecules through a membrane

Correct AnswerverifiedShow Answer

Loss of cell cycle control can cause cancer.

Correct AnswerverifiedShow Answer

A nerve cell and a muscle cell have the same genes,but express different subsets of them.

Correct AnswerverifiedShow Answer

Microfilaments and microtubules are part of the cytoskeleton.

Correct AnswerverifiedShow Answer

Transcytosis combines diffusion and active transport.

Correct AnswerverifiedShow Answer

Molecules bind to receptor sites and are enclosed in vesicles in the process of

Correct AnswerverifiedShow Answer

If the concentration of glucose in the water outside of a cell is higher than the concentration inside,

Correct AnswerverifiedShow Answer

The process by which cells specialize is called differentiation.

Correct AnswerverifiedShow Answer

The cellular abnormality that causes cystic fibrosis is

Correct AnswerverifiedShow Answer

A hypotonic solution

Correct AnswerverifiedShow Answer

Correct Answer
verified

If a nerve cell has a greater concentration of Na⁺ on the outside and K⁺ on the inside of the cell membrane,then the movement of Na⁺ outside and K⁺ inside is by diffusion.

Correct Answer
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False

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D

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C

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