Question 1

DNA molecules are in the nucleus

Accepted Answer

A)  as free molecules. 
B)  complexed with protein, forming chromatin fibers. 
C)  complexed with protein, forming nucleoli. 
D)  complexed with protein on the nuclear envelope. 
A)  as free molecules. 
B)  complexed with protein, forming chromatin fibers. 
C)  complexed with protein, forming nucleoli. 
D)  complexed with protein on the nuclear envelope.

Question 2

All cell types can divide a limitless number of times.

Accepted Answer

A) True 
 B)False

Question 3

Which of the following is isotonic to red blood cells?

Accepted Answer

A)  0.9% NaCl solution 
B)  Distilled water 
C)  0.9% glucose solution 
D)  Alcohol 
A)  0.9% NaCl solution 
B)  Distilled water 
C)  0.9% glucose solution 
D)  Alcohol

Question 4

Which of the following describes a lysosome?

Accepted Answer

A)  A double-membraned organelle that is the "powerhouse" of the cell 
B)  A complex network of interconnected membranes that is a communication system in the cell 
C)  A tiny, membranous sac that contains enzymes that degrade worn cell parts and debris 
D)  A nonmembranous structure that is essential for mitosis 
A)  A double-membraned organelle that is the "powerhouse" of the cell 
B)  A complex network of interconnected membranes that is a communication system in the cell 
C)  A tiny, membranous sac that contains enzymes that degrade worn cell parts and debris 
D)  A nonmembranous structure that is essential for mitosis

Question 5

Cells lose water when placed in a __________ solution.

Accepted Answer

A)  hypotonic 
B)  hypertonic 
C)  isotonic 
D)  dilute 
A)  hypotonic 
B)  hypertonic 
C)  isotonic 
D)  dilute

Question 6

All cell types divide at the same rate.

Accepted Answer

A) True 
 B)False

Question 7

A protein that spans the cell membrane is termed a(n)

Accepted Answer

A)  receptor protein. 
B)  integral protein. 
C)  peripheral protein. 
D)  anchoring protein. 
A)  receptor protein. 
B)  integral protein. 
C)  peripheral protein. 
D)  anchoring protein.

Question 8

Bone cells and muscle cells differ in structure and function because

Accepted Answer

A)  each expresses a different subset of genes. 
B)  each has different genes. 
C)  each has different chromosomes. 
D)  they express the same subset of genes. 
A)  each expresses a different subset of genes. 
B)  each has different genes. 
C)  each has different chromosomes. 
D)  they express the same subset of genes.

Question 9

Which of the following does not influence the rate of diffusion?

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 molecules 
A)  Distance 
B)  The concentration of the substance 
C)  The amount of energy available for transport molecules 
D)  The molecular weight of the diffusing molecules

Question 10

Apoptosis begins with a cell's receiving a signal to die.

Accepted Answer

A) True 
 B)False

Question 11

Filtration requires hydrostatic pressure.

Accepted Answer

A) True 
 B)False

Question 12

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. 
A)  lipids and carbohydrates. 
B)  proteins and carbohydrates. 
C)  lipids and proteins. 
D)  carbohydrates and polysaccharides.

Question 13

A hypertonic solution

Accepted Answer

A)  has a greater concentration (number) of solute particles than do the cells in the solution. 
B)  would cause cells to swell when placed in the solution. 
C)  has a lower osmotic pressure than do the cells in the solution. 
D)  causes water to rush inside cells. 
A)  has a greater concentration (number) of solute particles than do the cells in the solution. 
B)  would cause cells to swell when placed in the solution. 
C)  has a lower osmotic pressure than do the cells in the solution. 
D)  causes water to rush inside cells.

Question 14

Cellular adhesion molecules are

Accepted Answer

A)  peripheral proteins. 
B)  integral proteins. 
C)  lipids. 
D)  receptors. 
A)  peripheral proteins. 
B)  integral proteins. 
C)  lipids. 
D)  receptors.

Question 15

During interphase, a cell rests.

Accepted Answer

A) True 
 B)False

Question 16

The structures in the nucleus that serve as a "mitotic clock" are

Accepted Answer

A)  telomeres. 
B)  kinases. 
C)  ribosomes. 
D)  hormones. 
A)  telomeres. 
B)  kinases. 
C)  ribosomes. 
D)  hormones.

Question 17

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. 
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.

Question 18

A telomere is a type of hormone that controls the cell cycle.

Accepted Answer

A) True 
 B)False

Question 19

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. 
A)  mitochondrion. 
B)  ribosome. 
C)  peroxisome. 
D)  Golgi apparatus.

Question 20

The defining characteristic of a stem cell is

Accepted Answer

A)  self-repair. 
B)  self-renewal. 
C)  the ability to turn into a cancer cell. 
D)  origin from a progenitor cell. 
A)  self-repair. 
B)  self-renewal. 
C)  the ability to turn into a cancer cell. 
D)  origin from a progenitor cell.

Exam 3: Cells

DNA molecules are in the nucleus

All cell types can divide a limitless number of times.

Which of the following is isotonic to red blood cells?

Which of the following describes a lysosome?

Cells lose water when placed in a __________ solution.

All cell types divide at the same rate.

A protein that spans the cell membrane is termed a(n)

Bone cells and muscle cells differ in structure and function because

Which of the following does not influence the rate of diffusion?

Apoptosis begins with a cell's receiving a signal to die.

Filtration requires hydrostatic pressure.

The major components of the cell membrane are

A hypertonic solution

Cellular adhesion molecules are

During interphase, a cell rests.

The structures in the nucleus that serve as a "mitotic clock" are

What characteristic do simple diffusion and facilitated diffusion share?

A telomere is a type of hormone that controls the cell cycle.

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

The defining characteristic of a stem cell is

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