Question 1

Masses of insoluble material that are sometimes found in cytosol are known as

Accepted Answer

A)  colloids. 
B)  emulsifiers. 
C)  solutes. 
D)  crystals. 
E)  inclusions. 
A)  colloids. 
B)  emulsifiers. 
C)  solutes. 
D)  crystals. 
E)  inclusions.

Question 2

The cell theory includes all of these concepts except

Accepted Answer

A)  each cell maintains homeostasis at the cellular level. 
B)  cells are the smallest units that carry out the essential functions of life. 
C)  cells are the building blocks of all organisms. 
D)  all cells come from the division of preexisting cells. 
E)  every cell is capable of living on its own if isolated from the body. 
A)  each cell maintains homeostasis at the cellular level. 
B)  cells are the smallest units that carry out the essential functions of life. 
C)  cells are the building blocks of all organisms. 
D)  all cells come from the division of preexisting cells. 
E)  every cell is capable of living on its own if isolated from the body.

Question 3

If an animal cell has 18 chromosomes and undergoes mitosis, how many chromosomes would each daughter cellhave?

Accepted Answer

A)  9 
B)  36 
C)  23 
D)  18 
E)  It varies, but the total number in the two daughter cells will always add up to 18. 
A)  9 
B)  36 
C)  23 
D)  18 
E)  It varies, but the total number in the two daughter cells will always add up to 18.

Question 4

What is the first part of the cell that is affected when the pH of extracellular fluid changes?

Accepted Answer

A)  the nucleus 
B)  the nucleolus 
C)  the cytosol 
D)  the plasma membrane 
E)  the cytoskeleton 
A)  the nucleus 
B)  the nucleolus 
C)  the cytosol 
D)  the plasma membrane 
E)  the cytoskeleton

Question 5

When is DNA replicated?

Accepted Answer

A)  interphase 
B)  anaphase 
C)  metaphase 
D)  telophase 
E)  interkinesis 
A)  interphase 
B)  anaphase 
C)  metaphase 
D)  telophase 
E)  interkinesis

Question 6

Thymine is replaced by which nitrogen base in RNA?

Accepted Answer

A)  ribose 
B)  uracil 
C)  guanine 
D)  thymine is not replaced in RNA 
E)  cytosine 
A)  ribose 
B)  uracil 
C)  guanine 
D)  thymine is not replaced in RNA 
E)  cytosine

Question 7

The plasma membrane does not include

Accepted Answer

A)  integral proteins. 
B)  glycolipids. 
C)  phospholipids. 
D)  cholesterol. 
E)  silk mesh. 
A)  integral proteins. 
B)  glycolipids. 
C)  phospholipids. 
D)  cholesterol. 
E)  silk mesh.

Question 8

Endocytosis is a

Accepted Answer

A)  method for transporting substances into the cell. 
B)  method for metabolizing within the cytosol. 
C)  form of anabolism. 
D)  viral infection. 
E)  method for packaging secretions. 
A)  method for transporting substances into the cell. 
B)  method for metabolizing within the cytosol. 
C)  form of anabolism. 
D)  viral infection. 
E)  method for packaging secretions.

Question 9

Generally, cells with a very brief interphase and lacking a G0 phase

Accepted Answer

A)  are stem cells. 
B)  do not exhibit cytokinesis. 
C)  have brief life spans. 
D)  are reproductive cells. 
E)  lack the enzyme DNA polymerase. 
A)  are stem cells. 
B)  do not exhibit cytokinesis. 
C)  have brief life spans. 
D)  are reproductive cells. 
E)  lack the enzyme DNA polymerase.

Question 10

Water molecules and small ions enter a cell through

Accepted Answer

A)  channels formed by integral membrane proteins. 
B)  peripheral proteins. 
C)  lipid channels. 
D)  peripheral carbohydrates. 
E)  defects in the lipid layer of the membrane. 
A)  channels formed by integral membrane proteins. 
B)  peripheral proteins. 
C)  lipid channels. 
D)  peripheral carbohydrates. 
E)  defects in the lipid layer of the membrane.

Question 11

Which organelles are involved in membrane flow? Trace the route of a single integral membrane protein from formation to incorporation into the plasma membrane.

Accepted Answer

All membranous organelles are involved i

Question 12

Describe the ways that proteins of the plasma membrane allow a cell to control its internal environment or interact with its external environment.

Accepted Answer

Carrier proteins and channels help contr

Question 13

A mature red blood cell lacks a nucleus; therefore, it

Accepted Answer

A)  can repair itself readily. 
B)  is malformed. 
C)  can only divide once more. 
D)  will be a long-lived cell. 
E)  cannot make new proteins and will be worn out within a few months. 
A)  can repair itself readily. 
B)  is malformed. 
C)  can only divide once more. 
D)  will be a long-lived cell. 
E)  cannot make new proteins and will be worn out within a few months.

Question 14

Microvilli are found on cells of the inner surface of the small intestine, where they

Accepted Answer

A)  slow the movement of food through the digestive tract. 
B)  increase the absorption of nutrients from digested food. 
C)  sense the presence of food in the digestive tract. 
D)  push food along the digestive tract. 
E)  protect the intestinal lining from irritants or toxins in the food. 
A)  slow the movement of food through the digestive tract. 
B)  increase the absorption of nutrients from digested food. 
C)  sense the presence of food in the digestive tract. 
D)  push food along the digestive tract. 
E)  protect the intestinal lining from irritants or toxins in the food.

Question 15

Define osmosis and tell in what direction it occurs.

Accepted Answer

Osmosis is the transfer of water across

Question 16

The ________ typically consists of five or six flattened membranous discs called cisternae.

Accepted Answer

A)  centrioles 
B)  rough endoplasmic reticulum 
C)  Golgi apparatus 
D)  smooth endoplasmic reticulum 
E)  mitochondria 
A)  centrioles 
B)  rough endoplasmic reticulum 
C)  Golgi apparatus 
D)  smooth endoplasmic reticulum 
E)  mitochondria

Question 17

In-Text Figure Based Questions
-How do small water-soluble molecules and ions diffuse across the plasma membrane? How do lipid-soluble molecules diffuse across the plasma membrane? (Figure 3-15)

Accepted Answer

A) ______diffuse by osmosis; diffuse by carrier-mediated transport 
B)  diffuse by endocytosis; diffuse by pinocytosis 
C)  diffuse by carrier-mediated transport; diffuse by passive transport 
D)  diffuse directly through the plasma membrane; diffuse through membrane channels 
E)  diffuse through membrane channels; diffuse directly through the plasma membrane 
A) ______diffuse by osmosis; diffuse by carrier-mediated transport 
B)  diffuse by endocytosis; diffuse by pinocytosis 
C)  diffuse by carrier-mediated transport; diffuse by passive transport 
D)  diffuse directly through the plasma membrane; diffuse through membrane channels 
E)  diffuse through membrane channels; diffuse directly through the plasma membrane

Question 18

The following is a list of the steps involved in the process of secretion by the Golgi apparatus. What is the proper order for these steps?
1) Cisternae move from the forming face toward the maturing face.
2) Exocytosis
3) Products from RER are packaged into transport vesicles.
4) Secretory vesicles are formed at the maturing face.
5) Vesicles arrive at the forming face.
6) Enzymes modify arriving proteins and glycoproteins

Accepted Answer

A)  5, 6, 1, 4, 2, 3 
B)  2, 3, 5, 6, 1, 4 
C)  4, 3, 1, 6, 5, 2 
D)  3, 5, 6, 1, 4, 2 
E)  1, 3, 6, 4, 2, 5 
A)  5, 6, 1, 4, 2, 3 
B)  2, 3, 5, 6, 1, 4 
C)  4, 3, 1, 6, 5, 2 
D)  3, 5, 6, 1, 4, 2 
E)  1, 3, 6, 4, 2, 5

Question 19

The physical process by which a single animal cell separates into two cells is called

Accepted Answer

A)  cytosis. 
B)  mitosis. 
C)  cytokinesis. 
D)  phoresis. 
E)  meiosis. 
A)  cytosis. 
B)  mitosis. 
C)  cytokinesis. 
D)  phoresis. 
E)  meiosis.

Question 20

In-Text Figure Based Questions
-What provides the energy for the sodium-potassium exchange pump? (Figure 3-19)

Accepted Answer

A) ______breaking the high energy bond of ADP 
B)  the concentration gradient of sodium 
C)  the concentration gradient of potassium 
D)  breaking the high energy bond of ATP 
E)  the voltage of the cell 
A) ______breaking the high energy bond of ADP 
B)  the concentration gradient of sodium 
C)  the concentration gradient of potassium 
D)  breaking the high energy bond of ATP 
E)  the voltage of the cell

Exam 3: The Cellular Level of Organization

Masses of insoluble material that are sometimes found in cytosol are known as

The cell theory includes all of these concepts except

If an animal cell has 18 chromosomes and undergoes mitosis, how many chromosomes would each daughter cellhave?

What is the first part of the cell that is affected when the pH of extracellular fluid changes?

When is DNA replicated?

Thymine is replaced by which nitrogen base in RNA?

The plasma membrane does not include

Endocytosis is a

Generally, cells with a very brief interphase and lacking a G0 phase

Water molecules and small ions enter a cell through

Which organelles are involved in membrane flow? Trace the route of a single integral membrane protein from formation to incorporation into the plasma membrane.

Describe the ways that proteins of the plasma membrane allow a cell to control its internal environment or interact with its external environment.

A mature red blood cell lacks a nucleus; therefore, it

Microvilli are found on cells of the inner surface of the small intestine, where they

Define osmosis and tell in what direction it occurs.

The ________ typically consists of five or six flattened membranous discs called cisternae.

In-Text Figure Based Questions -How do small water-soluble molecules and ions diffuse across the plasma membrane? How do lipid-soluble molecules diffuse across the plasma membrane? (Figure 3-15)

The physical process by which a single animal cell separates into two cells is called

In-Text Figure Based Questions -What provides the energy for the sodium-potassium exchange pump? (Figure 3-19)

An Introduction to Anatomy and Physiology

The Chemical Level of Organization

The Tissue Level of Organization

The Integumentary System

Bones and Bone Structure

The Axial Skeleton

The Appendicular Skeleton

Joints

Muscle Tissue

The Muscular System

Nervous Tissue

The Spinal Cord, Spinal Nerves, and Spinal Reflexes

The Brain and Cranial Nerves

Sensory Pathways and the Somatic Nervous System

The Autonomic Nervous System and Higher-Order Functions

The Special Senses

The Endocrine System

Blood

The Heart

Blood Vessels and Circulation

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Metabolism, Nutrition, and Energetics

The Urinary System

Fluid, Electrolyte, and Acid-Base Balance

The Reproductive System

Development and Inheritance

Filters