Question 1

The nucleolus contains

Accepted Answer

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

Question 2

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. 
A)  peroxisomes. 
B)  lysosomes. 
C)  centrosomes. 
D)  ribosomes.

Question 3

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

Accepted Answer

A) True 
 B)False

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. 
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.

Question 5

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. 
A)  kinases and cyclins. 
B)  oncosuppressors and tumor activators. 
C)  metastatic activators and apoptosis stimulators. 
D)  tumor suppressors and oncogenes.

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. 
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.

Question 7

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

Question 8

The cytoplasm consists of organelles suspended in _________.

Accepted Answer

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

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. 
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.

Question 10

The framework of a cell membrane is a lipid bilayer.

Accepted Answer

A) True 
 B)False

Question 11

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 12

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

Accepted Answer

A) True 
 B)False

Question 13

Cytoskeletal structures that are not found in all cell types are

Accepted Answer

A)  microtubules. 
B)  microfilaments. 
C)  myofibrils. 
D)  intermediate filaments. 
A)  microtubules. 
B)  microfilaments. 
C)  myofibrils. 
D)  intermediate filaments.

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, differentiation 
A)  differentiation, cytoplasmic division, mitosis, interphase 
B)  interphase, differentiation, cytoplasmic division, mitosis 
C)  interphase, mitosis, cytoplasmic division, differentiation 
D)  mitosis, interphase, cytoplasmic division, differentiation

Question 15

Peroxisomes and lysosomes are sacs that contain enzymes.

Accepted Answer

A) True 
 B)False

Question 16

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

Question 17

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

Question 18

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. 
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.

Question 19

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

Accepted Answer

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

Question 20

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. 
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.

Exam 3: Cells

The nucleolus contains

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

Cancer can result if

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

In phagocytosis

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

The cytoplasm consists of organelles suspended in _________.

A hypotonic solution

The framework of a cell membrane is a lipid bilayer.

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

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

Cytoskeletal structures that are not found in all cell types are

Stages of the cell cycle unfold in the following order:

Peroxisomes and lysosomes are sacs that contain enzymes.

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

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

The cellular abnormality that causes cystic fibrosis is

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

An isotonic solution

Introduction to Human Anatomy and Physiology

Chemical Basis of Life

Cellular Metabolism

Tissues

Integumentary System

Skeletal System

Joints of the Skeletal System

Muscular System

Nervous System I: Basic Structure and Function

Nervous System II: Division of the Nervous System

Nervous System III: Senses

Endocrine System

Blood

Cardiovascular System

Lymphatic System and Immunity

Digestive System

Nutrition and Metabolism

Respiratory System

Urinary System

Water, Electrolyte, and Acid-Based Balance

Reproductive Systems

Pregnancy, Growth, and Development

Genetics and Genomics

Filters