Question 1

A young man who ran 6 miles a day throughout high school is injured during his first season running cross country in college. He must rest for three months and 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 proteins are

Accepted Answer

A)  peroxisomes.
B)  lysosomes.
C)  centrosomes.
D)  ribosomes.E) A) and B)
F) A) and C)

Question 2

An isotonic solution

Accepted Answer

A)  has a greater concentration of impermeant solute 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 C)
F) All of the above

Question 3

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 B)
F) A) and C)

Question 4

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

Question 5

Chromosomes duplicate during

Accepted Answer

A)  prophase.
B)  interphase.
C)  metaphase.
D)  telophase.E) B) and C)
F) None of the above

Question 6

Osmosis is the movement of

Accepted Answer

A)  molecules from a high concentration to a low concentration.
B)  water through a selectively permeable membrane to a solution containing a higher concentration of impermeant solute.
C)  water through a selectively permeable membrane to a solution containing a lower concentration of impermeant solute.
D)  ions from a low pressure region to a high pressure region through a selectively permeable membrane.E) All of the above
F) A) and B)

Question 7

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

Accepted Answer

A) True 
 B)False

Question 8

Chromatin consists of DNA and protein.

Accepted Answer

A) True 
 B)False

Question 9

Coffee grounds are mixed with water before being placed in a funnel filter. The large grounds remain in the filter, but the small particles pass through

Accepted Answer

A)  from low concentration to high concentration.
B)  from low hydrostatic pressure 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) B) and C)
F) C) and D)

Question 10

The function of the nucleus is to

Accepted Answer

A)  direct the activities of the cell.
B)  form mitochondria.
C)  transfer energy.
D)  provide cell shape.E) A) and B)
F) A) and C)

Question 11

A temporary cell that is no longer useful for development undergoes preprogrammed cell death. During this process,

Accepted Answer

A)  chromosomes join.
B)  the cytoskeleton forms large, complex structures.
C)  mitochondria merge.
D)  the cell can no longer adhere to other cells.E) None of the above
F) All of the above

Question 12

The movement of molecules through a membrane by filtration requires

Accepted Answer

A)  osmotic pressure.
B)  hydrostatic pressure.
C)  atmospheric pressure.
D)  barometric pressure.E) A) and C)
F) B) and D)

Question 13

Vesicles are formed from the

Accepted Answer

A)  lysosomal membrane.
B)  nuclear membrane.
C)  cell membrane.
D)  mitochondrial membrane.E) B) and C)
F) A) and B)

Question 14

Some people cannot be infected with HIV because

Accepted Answer

A)  they are already infected.
B)  their cells lack receptors that admit the virus.
C)  their cells have extra receptors for HIV.
D)  they were vaccinated.E) None of the above
F) B) and C)

Question 15

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) A) and B)

Question 16

During telophase of mitosis, chromosomes elongate and form chromatin threads.

Accepted Answer

A) True 
 B)False

Question 17

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

Question 18

Krabbe disease results from an abnormality that affects the ________ of nerve cells in the brain.

Accepted Answer

The answer of Krabbe disease results from an abnormality that...

Question 19

Researchers in a lab are working with a form of stem cells that can divide and give rise to any cell type, allowing them to research development. This cell type is known as

Accepted Answer

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

Question 20

During interphase, a cell rests.

Accepted Answer

A) True 
 B)False

Exam 3: Cells

The major components of the cell membrane are

Correct Answer
verified

Endoplasmic reticulum is best described as a

Correct Answer
verified

The movement of molecules through a membrane by filtration requires

Correct Answer
verified

Some people cannot be infected with HIV because

Correct Answer
verified

The cellular abnormality that causes cystic fibrosis is

Correct Answer
verified

Researchers in a lab are working with a form of stem cells that can divide and give rise to any cell type, allowing them to research development. This cell type is known as

Correct Answer
verified

Coffee grounds are mixed with water before being placed in a funnel filter. The large grounds remain in the filter, but the small particles pass through

Correct Answer
verified

Chromosomes duplicate during

Correct Answer
verified

An isotonic solution

Correct Answer
verified

Chromatin consists of DNA and protein.

Correct Answer
verified

During interphase, a cell rests.

Correct Answer
verified

Which organelle contains the nucleolus?

Correct Answer
verified

Krabbe disease results from an abnormality that affects the ________ of nerve cells in the brain.

Correct Answer
verified

During telophase of mitosis, chromosomes elongate and form chromatin threads.

Correct Answer
verified

A temporary cell that is no longer useful for development undergoes preprogrammed cell death. During this process,

Correct Answer
verified

Osmosis is the movement of

Correct Answer
verified

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

Correct Answer
verified

Correct Answer
verified

Vesicles are formed from the

Correct Answer
verified

The function of the nucleus is to

Correct Answer
verified

Exam 3: Cells

The major components of the cell membrane are

Correct AnswerverifiedShow Answer

Endoplasmic reticulum is best described as a

Correct AnswerverifiedShow Answer

The movement of molecules through a membrane by filtration requires

Correct AnswerverifiedShow Answer

Some people cannot be infected with HIV because

Correct AnswerverifiedShow Answer

The cellular abnormality that causes cystic fibrosis is

Correct AnswerverifiedShow Answer

Researchers in a lab are working with a form of stem cells that can divide and give rise to any cell type, allowing them to research development. This cell type is known as

Correct AnswerverifiedShow Answer

Coffee grounds are mixed with water before being placed in a funnel filter. The large grounds remain in the filter, but the small particles pass through

Correct AnswerverifiedShow Answer

Chromosomes duplicate during

Correct AnswerverifiedShow Answer

An isotonic solution

Correct AnswerverifiedShow Answer

Chromatin consists of DNA and protein.

Correct AnswerverifiedShow Answer

During interphase, a cell rests.

Correct AnswerverifiedShow Answer

Which organelle contains the nucleolus?

Correct AnswerverifiedShow Answer

Krabbe disease results from an abnormality that affects the ________ of nerve cells in the brain.

Correct AnswerverifiedShow Answer

During telophase of mitosis, chromosomes elongate and form chromatin threads.

Correct AnswerverifiedShow Answer

A temporary cell that is no longer useful for development undergoes preprogrammed cell death. During this process,

Correct AnswerverifiedShow Answer

Osmosis is the movement of

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Vesicles are formed from the

Correct AnswerverifiedShow Answer

The function of the nucleus is to

Correct AnswerverifiedShow Answer

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