Question 1

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

Accepted Answer

A) True 
 B)False

Question 2

A hypotonic solution

Accepted Answer

A)  has a lower concentration (number) of impermeant solute 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) All of the above
F) None of the above

Question 3

Which stages have double the amount of chromosomal DNA compared to stage G1?

Accepted Answer

A)  G2
B)  Prophase
C)  Metaphase
D)  ApoptosisE) C) and D)
F) None of the above

Question 4

For which of the following organelles are the structure and function correctly described?

Accepted Answer

A)  Endoplasmic reticulum-a network of interconnected membranes forming sacs and canals that packages protein molecules for secretion
B)  Ribosomes-membranous vesicles containing digestive enzymes
C)  Golgi apparatus-particles, composed of protein and RNA, which synthesize proteins
D)  Mitochondrion-nonmembranous structure that synthesizes proteinsE) A) and C)
F) B) and D)

Question 5

All cell types divide at the same rate.

Accepted Answer

A) True 
 B)False

Question 6

During cell division, the chromosomes did not separate properly. This likely means that the centrioles failed to attach to what structure?

Accepted Answer

A)  Centrosome
B)  Cilia
C)  Nucleus
D)  MicrotubulesE) C) and D)
F) B) and C)

Question 7

Microfilaments and microtubules are part of the cytoskeleton.

Accepted Answer

A) True 
 B)False

Question 8

Transcytosis combines diffusion and active transport.

Accepted Answer

A) True 
 B)False

Question 9

Red blood cells are placed in a solution of 0.9% NaCl and no diffusion or osmosis is observed. This means that the solution is ________.

Accepted Answer

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

Question 10

What is the relationship of osmotic pressure to the number of solute particles in a solution?

Accepted Answer

A)  The lower the number of impermeant solute particles, the greater the osmotic pressure.
B)  The greater the number of impermeant solute particles, the lower the osmotic pressure.
C)  The greater the osmotic pressure, the lower the number of impermeant solute particles.
D)  The greater the number of impermeant solute particles, the greater the osmotic pressure.E) A) and B)
F) A) and C)

Question 11

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

Question 12

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

Accepted Answer

A) True 
 B)False

Question 13

Which of following does not influence the rate of molecular movement?

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

Question 14

The three major parts of a cell are

Accepted Answer

A)  the endoplasmic reticulum, Golgi apparatus, and vesicles.
B)  the nucleus, nucleolus, and nuclear envelope.
C)  microtubules, ribosomes, and centrosomes.
D)  the nucleus, cytoplasm, and cell membrane.E) B) and C)
F) A) and D)

Question 15

Cytoskeletal structures that are not found in all cell types are

Accepted Answer

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

Question 16

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

Question 17

As a cell grows,

Accepted Answer

A)  the relationship between its surface area and volume remains unchanged.
B)  its surface area increases to a lesser degree than its volume.
C)  its volume increases to a lesser degree than its surface area.
D)  its requirement for nutrients increases to a lesser degree than its requirement for oxygen.E) A) and B)
F) C) and D)

Question 18

Tara discovers a rapidly growing lump that doubles in size over a month. A doctor does a biopsy and discovers it's a form of cancer, which can result if

Accepted Answer

A)  mitosis is too infrequent.
B)  mitosis is too frequent.
C)  the cell cycle stops.
D)  the cell cycle runs backward.E) B) and C)
F) A) and B)

Question 19

Cilia and flagella extend from certain cells, enabling them to move.

Accepted Answer

A) True 
 B)False

Question 20

Filtration requires hydrostatic pressure.

Accepted Answer

A) True 
 B)False

Exam 3: Cells

Tara discovers a rapidly growing lump that doubles in size over a month. A doctor does a biopsy and discovers it's a form of cancer, which can result if

Correct AnswerverifiedShow Answer

Which of following does not influence the rate of molecular movement?

Correct AnswerverifiedShow Answer

Filtration requires hydrostatic pressure.

Correct AnswerverifiedShow Answer

Red blood cells are placed in a solution of 0.9% NaCl and no diffusion or osmosis is observed. This means that the solution is ________.

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

What characteristic do simple diffusion and facilitated diffusion share?

Correct AnswerverifiedShow Answer

The three major parts of a cell are

Correct AnswerverifiedShow Answer

Transcytosis combines diffusion and active transport.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

During cell division, the chromosomes did not separate properly. This likely means that the centrioles failed to attach to what structure?

Correct AnswerverifiedShow Answer

Microfilaments and microtubules are part of the cytoskeleton.

Correct AnswerverifiedShow Answer

As a cell grows,

Correct AnswerverifiedShow Answer

Cilia and flagella extend from certain cells, enabling them to move.

Correct AnswerverifiedShow Answer

A hypotonic solution

Correct AnswerverifiedShow Answer

Which stages have double the amount of chromosomal DNA compared to stage G1?

Correct AnswerverifiedShow Answer

What is the relationship of osmotic pressure to the number of solute particles in a solution?

Correct AnswerverifiedShow Answer

All cell types divide at the same rate.

Correct AnswerverifiedShow Answer

Cytoskeletal structures that are not found in all cell types are

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

For which of the following organelles are the structure and function correctly described?

Correct AnswerverifiedShow Answer

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