Question 1

Membrane rafts are found in the cytoplasmic membranes of

Accepted Answer

A)  eukaryotes only. 
B)  bacteria only. 
C)  archaea only. 
D)  both archaea and bacteria. 
E)  both archaea and eukaryotes. 
A)  eukaryotes only. 
B)  bacteria only. 
C)  archaea only. 
D)  both archaea and bacteria. 
E)  both archaea and eukaryotes. A

Question 2

Goli bodies are examples of a (membranous/non- membranous/cellular) organelle.

Accepted Answer

membranous

Question 3

Bacterial protein synthesis can begin before the reading of the gene is complete.

Accepted Answer

A) True 
 B)False  True

Question 4

Which of the following molecules would be expected to cross the cytoplasmic membrane rapidly and without the use of transport proteins?

Accepted Answer

A)  small hydrophobic molecules only 
B)  small hydrophilic molecules only 
C)  ions only 
D)  large molecules only 
E)  both ions and hydrophilic molecules 
A)  small hydrophobic molecules only 
B)  small hydrophilic molecules only 
C)  ions only 
D)  large molecules only 
E)  both ions and hydrophilic molecules

Question 5

The process illustrated in Figure 3- 6 occurs in (eukaryotic/bacterial/archaeal) cells.

Accepted Answer

The answer of   The process illustrated in Figure...

Question 6

Cytoplasmic membranes of are composed of phospholipids.

Accepted Answer

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

Question 7

Eukaryotic ribosomes are composed of 50S and 30S subunits.

Accepted Answer

A) True 
 B)False

Question 8

Bacterial cell walls that are resistant to drying contain

Accepted Answer

A)  lipopolysaccharide. 
B)  carbohydrates. 
C)  amino acids. 
D)  tubulin. 
E)  waxes. 
A)  lipopolysaccharide. 
B)  carbohydrates. 
C)  amino acids. 
D)  tubulin. 
E)  waxes.

Question 9

Most antibacterial drugs disrupt or destroy bacterial cellular characteristics that are different from those of eukaryotic cells or that may not even be present in eukaryotic cells, an idea termed 'selective toxicity'. List and describe at least three cellular features of bacteria that could be targeted to inhibit or kill a bacterial pathogen.

Accepted Answer

1) Cell wall: The cell wall of almost al

Question 10

ATP is expended in which of the following processes?

Accepted Answer

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

Question 11

Chromatin is composed of DNA and special packaging proteins called hopanoids.

Accepted Answer

A) True 
 B)False

Question 12

Which of the following statements concerning the endosymbiotic theory is FALSE?

Accepted Answer

A)  Eukaryotes were formed from the union of small anaerobic cells by larger aerobic cells. 
B)  The cristae of mitochondria evolved from the cytoplasmic membrane of prokaryotes. 
C)  Mitochondria and chloroplasts have their own DNA and ribosomes. 
D)  Mitochondria and chloroplasts can divide independently of the cell. 
E)  The endosymbiotic theory is not universally accepted. 
A)  Eukaryotes were formed from the union of small anaerobic cells by larger aerobic cells. 
B)  The cristae of mitochondria evolved from the cytoplasmic membrane of prokaryotes. 
C)  Mitochondria and chloroplasts have their own DNA and ribosomes. 
D)  Mitochondria and chloroplasts can divide independently of the cell. 
E)  The endosymbiotic theory is not universally accepted.

Question 13

Which of the following organelles is responsible for producing most of the ATP in a eukaryotic cell?

Accepted Answer

A)  Golgi body 
B)  mitochondrion 
C)  smooth endoplasmic reticulum 
D)  lysosome 
E)  nucleus 
A)  Golgi body 
B)  mitochondrion 
C)  smooth endoplasmic reticulum 
D)  lysosome 
E)  nucleus

Question 14

The processes illustrated in Figure 3- 4 do not require energy input.

Accepted Answer

A) True 
 B)False

Question 15

The semiliquid matrix of the nucleus is called the (cytoplasm/nucleoid/nucleoplasm).

Accepted Answer

The answer of The semiliquid matrix of the nucleus is...

Question 16

Which of the following statements concerning prokaryotic flagella is TRUE?

Accepted Answer

A)  Treponema is an example of a bacterium that has a tuft of polar flagella. 
B)  Prokaryotic flagella are composed of tubulin. 
C)  Prokaryotic flagella move in a whip- like manner. 
D)  Prokaryotic flagella are anchored to the cell wall by means of the basal body. 
E)  A "run" results from clockwise movement of the flagellum. 
A)  Treponema is an example of a bacterium that has a tuft of polar flagella. 
B)  Prokaryotic flagella are composed of tubulin. 
C)  Prokaryotic flagella move in a whip- like manner. 
D)  Prokaryotic flagella are anchored to the cell wall by means of the basal body. 
E)  A "run" results from clockwise movement of the flagellum.

Question 17

Hopanoids are found in cytoplasmic membranes.

Accepted Answer

A)  archaeal 
B)  prokaryotic 
C)  no 
D)  bacterial 
E)  eukaryotic 
A)  archaeal 
B)  prokaryotic 
C)  no 
D)  bacterial 
E)  eukaryotic

Question 18

The presence of a cell (wall/membrane) enables bacterial and plant cells to resist the effects of hypotonic solutions.

Accepted Answer

The answer of The presence of a cell (wall/membrane) enables...

Question 19

A(n) (symport/antiport/uniport) is a carrier protein that transports two substances in the same direction across a membrane.

Accepted Answer

The answer of A(n) (symport/antiport/uniport) is a carrier protein that...

Question 20

Describe how the structure of the bacterial cytoplasmic membrane relates to its function of selective permeability.

Accepted Answer

The structure and function of the cytopl

Exam 3: Cell Structure and Function

Membrane rafts are found in the cytoplasmic membranes of

Goli bodies are examples of a (membranous/non- membranous/cellular) organelle.

Bacterial protein synthesis can begin before the reading of the gene is complete.

Which of the following molecules would be expected to cross the cytoplasmic membrane rapidly and without the use of transport proteins?

The process illustrated in Figure 3- 6 occurs in (eukaryotic/bacterial/archaeal) cells.

Cytoplasmic membranes of are composed of phospholipids.

Eukaryotic ribosomes are composed of 50S and 30S subunits.

Bacterial cell walls that are resistant to drying contain

ATP is expended in which of the following processes?

Chromatin is composed of DNA and special packaging proteins called hopanoids.

Which of the following statements concerning the endosymbiotic theory is FALSE?

Which of the following organelles is responsible for producing most of the ATP in a eukaryotic cell?

The processes illustrated in Figure 3- 4 do not require energy input.

The semiliquid matrix of the nucleus is called the (cytoplasm/nucleoid/nucleoplasm).

Which of the following statements concerning prokaryotic flagella is TRUE?

Hopanoids are found in cytoplasmic membranes.

The presence of a cell (wall/membrane) enables bacterial and plant cells to resist the effects of hypotonic solutions.

A(n) (symport/antiport/uniport) is a carrier protein that transports two substances in the same direction across a membrane.

Describe how the structure of the bacterial cytoplasmic membrane relates to its function of selective permeability.

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 Disease, and Epidemiology

Innate Immunity

Adaptive Immunity

Immunization and Immune Testing

Immune Disorders

Pathogenic Gram-Positive Bacteria

Pathogenic Gram-Negative Cocci and Bacilli

Rickettsias, Chlamydias, Spirochetes, and Vibrios

Pathogenic Fungi

Parasitic Protozoa, Helminths, and Arthropod Vectors

Pathogenic Dna Viruses

Pathogenic Rna Viruses

Applied and Environmental Microbiology

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