Question 1

Which of the following statements concerning osmosis is FALSE?

Accepted Answer

A)  Osmosis requires a selectively permeable membrane. 
B)  During osmosis, water crosses to the side of the membrane with a lower solute concentration. 
C)  Cells placed in hypotonic solutions will gain water. 
D)  Crenation results when blood cells are placed in a hypertonic solution. 
E)  Osmosis stops when the system reaches equilibrium. 
A)  Osmosis requires a selectively permeable membrane. 
B)  During osmosis, water crosses to the side of the membrane with a lower solute concentration. 
C)  Cells placed in hypotonic solutions will gain water. 
D)  Crenation results when blood cells are placed in a hypertonic solution. 
E)  Osmosis stops when the system reaches equilibrium.

Question 2

The cell walls of eukaryotes are typically composed of (carbohydrates/peptidoglycan/glycoproteins).

Accepted Answer

The answer of The cell walls of eukaryotes are typically...

Question 3

Bacterial ribosomes are composed of several polypeptides and

Accepted Answer

A)  three RNA molecules in two subunits. 
B)  three RNA molecules in three subunits. 
C)  two RNA molecules in two subunits. 
D)  two RNA molecules in a single complex. 
E)  one large RNA molecule in a single complex. 
A)  three RNA molecules in two subunits. 
B)  three RNA molecules in three subunits. 
C)  two RNA molecules in two subunits. 
D)  two RNA molecules in a single complex. 
E)  one large RNA molecule in a single complex.

Question 4

Which of the following statements about the endoplasmic reticulum (ER) is CORRECT?

Accepted Answer

A)  The rough ER is the site of lipid synthesis. 
B)  The smooth ER has ribosomes associated with it. 
C)  The ER is a lipid storage organelle. 
D)  The ER is a transport system within the cytoplasm. 
E)  The smooth ER is a site of ATP synthesis. 
A)  The rough ER is the site of lipid synthesis. 
B)  The smooth ER has ribosomes associated with it. 
C)  The ER is a lipid storage organelle. 
D)  The ER is a transport system within the cytoplasm. 
E)  The smooth ER is a site of ATP synthesis.

Question 5

Endocytosis and exocytosis are means of transport used by

Accepted Answer

A)  bacteria. 
B)  eukaryotes. 
C)  archaea. 
D)  all prokaryotes. 
E)  nothing; no cells use both processes. 
A)  bacteria. 
B)  eukaryotes. 
C)  archaea. 
D)  all prokaryotes. 
E)  nothing; no cells use both processes.

Question 6

Which of the following is NOT a component of bacterial flagella?

Accepted Answer

A)  flagellin 
B)  basal body 
C)  tubulin 
D)  filament 
E)  hook 
A)  flagellin 
B)  basal body 
C)  tubulin 
D)  filament 
E)  hook

Question 7

Which of the following statements concerning the characteristics of life is FALSE?

Accepted Answer

A)  reproduction is defined as an increase in the size of an organism. 
B)  viruses have some, but not all, of the characteristics of living things. 
C)  organisms may not exhibit all of the characteristics of life at all times. 
D)  reproduction can occur asexually or sexually in living things. 
E)  living things store metabolic energy in the form of chemicals such as ATP. 
A)  reproduction is defined as an increase in the size of an organism. 
B)  viruses have some, but not all, of the characteristics of living things. 
C)  organisms may not exhibit all of the characteristics of life at all times. 
D)  reproduction can occur asexually or sexually in living things. 
E)  living things store metabolic energy in the form of chemicals such as ATP.

Question 8

Chloroplasts differ from mitochondria in that the former have

Accepted Answer

A)  DNA. 
B)  two lipid bilayers. 
C)  70S ribosomes. 
D)  thylakoids. 
E)  cristae. 
A)  DNA. 
B)  two lipid bilayers. 
C)  70S ribosomes. 
D)  thylakoids. 
E)  cristae.

Question 9

Lipid-soluble molecules would be expected to cross the cytoplasmic membrane by which of the following processes?

Accepted Answer

A)  osmosis 
B)  facilitated diffusion 
C)  diffusion 
D)  active transport 
E)  group translocation 
A)  osmosis 
B)  facilitated diffusion 
C)  diffusion 
D)  active transport 
E)  group translocation

Question 10

Cytoplasmic membranes of ________ are composed of unbranched phospholipids.

Accepted Answer

A)  bacteria 
B)  eukaryotes 
C)  archaea 
D)  prokaryotes 
E)  bacteria and eukaryotes 
A)  bacteria 
B)  eukaryotes 
C)  archaea 
D)  prokaryotes 
E)  bacteria and eukaryotes

Question 11

The glycocalyx of a eukaryotic cell performs all of the following functions EXCEPT

Accepted Answer

A)  protection against dehydration. 
B)  anchoring cells to each other. 
C)  cellular recognition and communication. 
D)  transfer of genetic material between cells. 
E)  strengthening the cell surface. 
A)  protection against dehydration. 
B)  anchoring cells to each other. 
C)  cellular recognition and communication. 
D)  transfer of genetic material between cells. 
E)  strengthening the cell surface.

Question 12

Which of the following prokaryotic cells contain an outer membrane?

Accepted Answer

A)  Gram-negative bacteria only 
B)  Gram-positive bacteria only 
C)  both Gram-positive and Gram-negative bacteria 
D)  archaea 
E)  all prokaryotes 
A)  Gram-negative bacteria only 
B)  Gram-positive bacteria only 
C)  both Gram-positive and Gram-negative bacteria 
D)  archaea 
E)  all prokaryotes

Question 13

Which of the following is part of the structure of the mitochondria of a eukaryotic cell?

Accepted Answer

A)  cilia 
B)  cristae 
C)  thylakoids 
D)  inclusions 
E)  nucleolus 
A)  cilia 
B)  cristae 
C)  thylakoids 
D)  inclusions 
E)  nucleolus

Question 14

Which of the following never have cell walls?

Accepted Answer

A)  algae 
B)  animal cells 
C)  archaea 
D)  bacteria 
E)  fungi 
A)  algae 
B)  animal cells 
C)  archaea 
D)  bacteria 
E)  fungi

Question 15

The reserve deposits of starch or other compounds found in many prokaryotic cells are called (vacuoles/inclusions/nucleoid).

Accepted Answer

The answer of The reserve deposits of starch or other...

Question 16

Which of the following bacterial cell structures plays an important role in the creation of biofilms?

Accepted Answer

A)  glycocalyces 
B)  flagella 
C)  fimbriae 
D)  pili 
E)  both fimbriae and glycocalyces 
A)  glycocalyces 
B)  flagella 
C)  fimbriae 
D)  pili 
E)  both fimbriae and glycocalyces

Question 17

Lipid A is a component of

Accepted Answer

A)  the outer membrane of Gram-negative bacteria. 
B)  plant cell walls. 
C)  cytoplasmic membranes. 
D)  Gram-positive bacterial membranes. 
E)  bacterial glycocalyces. 
A)  the outer membrane of Gram-negative bacteria. 
B)  plant cell walls. 
C)  cytoplasmic membranes. 
D)  Gram-positive bacterial membranes. 
E)  bacterial glycocalyces.

Question 18

In a(n) (hypertonic/isotonic/hypotonic) solution, an animal cell can gain so much water that it may burst.

Accepted Answer

The answer of In a(n) (hypertonic/isotonic/hypotonic) solution, an animal cell...

Question 19

The cells illustrated in Figure 3.1 are in a(n) ________ environment.

Accepted Answer

A)  hypotonic 
B)  hypertonic 
C)  isotonic 
D)  fluid mosaic 
E)  passive 
A)  hypotonic 
B)  hypertonic 
C)  isotonic 
D)  fluid mosaic 
E)  passive

Question 20

Some ________ use group translocation as a means of transport.

Accepted Answer

A)  eukaryotes 
B)  bacteria 
C)  archaea 
D)  protozoa 
E)  eukaryotes and prokaryotes 
A)  eukaryotes 
B)  bacteria 
C)  archaea 
D)  protozoa 
E)  eukaryotes and prokaryotes

Exam 3: Cell Structure and Function

Which of the following statements concerning osmosis is FALSE?

The cell walls of eukaryotes are typically composed of (carbohydrates/peptidoglycan/glycoproteins).

Bacterial ribosomes are composed of several polypeptides and

Which of the following statements about the endoplasmic reticulum (ER) is CORRECT?

Endocytosis and exocytosis are means of transport used by

Which of the following is NOT a component of bacterial flagella?

Which of the following statements concerning the characteristics of life is FALSE?

Chloroplasts differ from mitochondria in that the former have

Lipid-soluble molecules would be expected to cross the cytoplasmic membrane by which of the following processes?

Cytoplasmic membranes of ________ are composed of unbranched phospholipids.

The glycocalyx of a eukaryotic cell performs all of the following functions EXCEPT

Which of the following prokaryotic cells contain an outer membrane?

Which of the following is part of the structure of the mitochondria of a eukaryotic cell?

Which of the following never have cell walls?

The reserve deposits of starch or other compounds found in many prokaryotic cells are called (vacuoles/inclusions/nucleoid).

Which of the following bacterial cell structures plays an important role in the creation of biofilms?

Lipid A is a component of

In a(n) (hypertonic/isotonic/hypotonic) solution, an animal cell can gain so much water that it may burst.

The cells illustrated in Figure 3.1 are in a(n) ________ environment.

Some ________ use group translocation as a means of transport.

A Brief History of Microbiology

The Chemistry of Microbiology

Microscopy, Staining, and Classification

Microbial Metabolism

Microbial Nutrition and Growth

Microbial Genetics

Recombinant DNA Technology

Controlling Microbial Growth in the Environment

Controlling Microbial Growth in the Body: Antimicrobial Drugs

Characterizing and Classifying Prokaryotes

Characterizing and Classifying Eukaryotes

Characterizing and Classifying Viruses, Viroids, and Prions

Infection, Infectious Diseases, and Epidemiology

Innate Immunity

Adaptive Immunity

Immunization and Immune Testing

Immune Disorders

Microbial Diseases of the Skin and Wounds

Microbial Diseases of the Nervous System and Eyes

Microbial Cardiovascular and Systemic Diseases

Microbial Diseases of the Respiratory System

Microbial Diseases of the Digestive System

Microbial Diseases of the Urinary and Reproductive Systems

Applied and Industrial Microbiology

Microbial Ecology and Microbiomes

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