Question 1

Agar is obtained from

Accepted Answer

A)  bacteria. 
B)  algae. 
C)  protozoans. 
D)  plants. 
E)  yeasts. 
A)  bacteria. 
B)  algae. 
C)  protozoans. 
D)  plants. 
E)  yeasts.

Question 2

Dimorphic fungi

Accepted Answer

A)  may grow as mycelia or yeast AND are mushrooms. 
B)  may grow as mycelia or yeast AND are often associated with disease in humans. 
C)  are often associated with disease in humans AND are mushrooms. 
D)  are strictly hyphae AND are often associated with disease in humans. 
E)  are strictly yeasts AND are often associated with disease in humans. 
A)  may grow as mycelia or yeast AND are mushrooms. 
B)  may grow as mycelia or yeast AND are often associated with disease in humans. 
C)  are often associated with disease in humans AND are mushrooms. 
D)  are strictly hyphae AND are often associated with disease in humans. 
E)  are strictly yeasts AND are often associated with disease in humans.

Question 3

Schizogony

Accepted Answer

A)  means multiple fissions AND is performed by bacteria. 
B)  is performed by bacteria AND is performed by protozoa. 
C)  is performed by protozoa AND is a type of reproduction. 
D)  is a form of reproduction AND means multiple fissions. 
E)  means multiple fissions AND is performed by protozoa. 
A)  means multiple fissions AND is performed by bacteria. 
B)  is performed by bacteria AND is performed by protozoa. 
C)  is performed by protozoa AND is a type of reproduction. 
D)  is a form of reproduction AND means multiple fissions. 
E)  means multiple fissions AND is performed by protozoa.

Question 4

Which of the following statements regarding protozoa is False?

Accepted Answer

A)  All protozoa lack mitochondria. 
B)  Some protozoa are photosynthetic. 
C)  Some protozoa are parasitic. 
D)  Trichomoniasis is caused by a protozoan. 
E)  Protozoa are unicellular organisms. 
A)  All protozoa lack mitochondria. 
B)  Some protozoa are photosynthetic. 
C)  Some protozoa are parasitic. 
D)  Trichomoniasis is caused by a protozoan. 
E)  Protozoa are unicellular organisms.

Question 5

Protozoans are usually multicellular and found in arid environments.

Accepted Answer

A) True 
 B)False

Question 6

Protozoans are an important part of the food chain, ingesting large numbers of

Accepted Answer

A)  fish and crabs. 
B)  bacteria and algae. 
C)  shellfish and algae. 
D)  other protozoans. 
E)  bacteria and fungi. 
A)  fish and crabs. 
B)  bacteria and algae. 
C)  shellfish and algae. 
D)  other protozoans. 
E)  bacteria and fungi.

Question 7

Why would it be more difficult to treat diseases in humans caused by members of the Eukarya than diseases caused by the Bacteria?

Accepted Answer

A)  Multicellular organisms always have their own immune systems for protection, so any treatment we develop needs to overcome this built-in protection mechanism. 
B)  Since bacteria are so much simpler (being single-celled) than multi-cellular eukaryotic microbes, they are naturally easier to kill off. 
C)  Eukaryotic microbes use many of the same enzymes and systems as humans, so we lose the ability to target certain molecules that might be present ONLY in the cell type we want to eliminate. 
D)  Eukaryotic microbes (unlike prokaryotes) often secrete compounds that breakdown and eliminate drugs used against them. This makes them much harder to effectively eliminate than bacteria. 
E)  Eukaryotic pathogens multiply much more effectively in a human host than bacterial pathogens do; they attain extremely high numbers in the host, making it very difficult to get rid of them. 
A)  Multicellular organisms always have their own immune systems for protection, so any treatment we develop needs to overcome this built-in protection mechanism. 
B)  Since bacteria are so much simpler (being single-celled) than multi-cellular eukaryotic microbes, they are naturally easier to kill off. 
C)  Eukaryotic microbes use many of the same enzymes and systems as humans, so we lose the ability to target certain molecules that might be present ONLY in the cell type we want to eliminate. 
D)  Eukaryotic microbes (unlike prokaryotes) often secrete compounds that breakdown and eliminate drugs used against them. This makes them much harder to effectively eliminate than bacteria. 
E)  Eukaryotic pathogens multiply much more effectively in a human host than bacterial pathogens do; they attain extremely high numbers in the host, making it very difficult to get rid of them.

Question 8

Paralytic shellfish poisoning occurs when humans eat shellfish that have fed on

Accepted Answer

A)  Gonyaulax species. 
B)  Salmonella species. 
C)  Vibrio cholerae. 
D)  E. coli. 
E)  Volvox species. 
A)  Gonyaulax species. 
B)  Salmonella species. 
C)  Vibrio cholerae. 
D)  E. coli. 
E)  Volvox species.

Question 9

Which of the statements BEST describes tapeworms?

Accepted Answer

A)  They have a complicated digestive system. 
B)  They do not have a digestive system. 
C)  They may be transmitted by eating undercooked meat. 
D)  They do not have a digestive system AND they may be transmitted by eating undercooked meat. 
E)  They have a complicated digestive system AND they may be transmitted by eating undercooked meat. 
A)  They have a complicated digestive system. 
B)  They do not have a digestive system. 
C)  They may be transmitted by eating undercooked meat. 
D)  They do not have a digestive system AND they may be transmitted by eating undercooked meat. 
E)  They have a complicated digestive system AND they may be transmitted by eating undercooked meat.

Question 10

The return of carbon dioxide to the atmosphere and nitrogen to the soil is due to the action of

Accepted Answer

A)  viruses and plants. 
B)  bacteria and viruses. 
C)  fungi and bacteria. 
D)  fungi and viruses. 
E)  plants and bacteria. 
A)  viruses and plants. 
B)  bacteria and viruses. 
C)  fungi and bacteria. 
D)  fungi and viruses. 
E)  plants and bacteria.

Question 11

Most of the medically important multicellular parasites are arthropods or helminths.

Accepted Answer

A) True 
 B)False

Question 12

Select the True statement regarding algae.

Accepted Answer

A)  Although most algae have a cellulose/pectin cell wall, some algae lack a cell wall. 
B)  Some algae can directly cause infectious diseases in humans and other animals. 
C)  Algae are plants and therefore possess a highly organized vascular system. 
D)  Algae are generally saprophytic, living off dead and decaying matter. 
E)  Algae always reproduce sexually, producing both haploid and diploid generations. 
A)  Although most algae have a cellulose/pectin cell wall, some algae lack a cell wall. 
B)  Some algae can directly cause infectious diseases in humans and other animals. 
C)  Algae are plants and therefore possess a highly organized vascular system. 
D)  Algae are generally saprophytic, living off dead and decaying matter. 
E)  Algae always reproduce sexually, producing both haploid and diploid generations.

Question 13

Please select the False statement regarding plague and its transmission.

Accepted Answer

A)  Plague is caused by a Gram-negative organism and is thus completely untreatable with antibiotics. 
B)  Yersinia pestis is a Gram-negative organism and thus possess an outer lipopolysaccharide layer. 
C)  People can contract plague when they are bitten by fleas from rodents infected with the causative organism. 
D)  Y. pestis is typically transmitted by the bites of infected fleas, an example of biological transmission. 
E)  The incidence of vector-borne diseases such as plague can be decreased by controlling the vector or the infected hosts. 
A)  Plague is caused by a Gram-negative organism and is thus completely untreatable with antibiotics. 
B)  Yersinia pestis is a Gram-negative organism and thus possess an outer lipopolysaccharide layer. 
C)  People can contract plague when they are bitten by fleas from rodents infected with the causative organism. 
D)  Y. pestis is typically transmitted by the bites of infected fleas, an example of biological transmission. 
E)  The incidence of vector-borne diseases such as plague can be decreased by controlling the vector or the infected hosts.

Question 14

Sarcodina move by means of

Accepted Answer

A)  flagella. 
B)  apicomplexans. 
C)  cilia. 
D)  pseudopodia. 
E)  microvilli. 
A)  flagella. 
B)  apicomplexans. 
C)  cilia. 
D)  pseudopodia. 
E)  microvilli.

Question 15

Lichens may be an association of

Accepted Answer

A)  several different fungi. 
B)  protozoa and bacteria. 
C)  algae and fungi. 
D)  virus and algae. 
E)  fungus and ants. 
A)  several different fungi. 
B)  protozoa and bacteria. 
C)  algae and fungi. 
D)  virus and algae. 
E)  fungus and ants.

Question 16

You and your exercise buddy decide to go to Yosemite National Park to hike the famous El Capitan trail. You book your trip through a well known agency but before you leave for your vacation, you learn that there have been two cases of plague reported in people who recently visited a different area of the park. Your friend is anxious and tells you he thinks that plague is really dangerous and kills people everyone who gets it. He points out that this disease killed a lot of people during the Middle Ages, and says he doesn't want to do the trip after all. You decide to do some research on the plague and its causative agent before making a decision about your trip.
-Plague is caused by Yersinia pestis, a Gram-negative facultatively anaerobic rod. It is non-motile and grows best at 28°C. Because you are a microbiology student, you know that the organism is

Accepted Answer

A)  a mesophile that grows best in the presence of oxygen but can also grow without it. 
B)  a psychrophile that grows best in the presence of oxygen but can also grow without it. 
C)  a psychrophile that grows best without oxygen but can also grow when oxygen is present. 
D)  a mesophile that grows best without oxygen but can also grow when oxygen is present. 
E)  a mesophile that cannot grow when oxygen is present. 
A)  a mesophile that grows best in the presence of oxygen but can also grow without it. 
B)  a psychrophile that grows best in the presence of oxygen but can also grow without it. 
C)  a psychrophile that grows best without oxygen but can also grow when oxygen is present. 
D)  a mesophile that grows best without oxygen but can also grow when oxygen is present. 
E)  a mesophile that cannot grow when oxygen is present.

Question 17

How does Ascaris lumbricoides, an intestinal parasite, cause choking and pulmonary symptoms in some people?

Accepted Answer

A)  People inadvertently inhale Ascaris worms when they bring contaminated food close to their mouths; these cause pulmonary blockages. 
B)  Ingested Ascaris larvae penetrate intestinal capillaries, from where they are carried to the lungs, causing coughing and shortness of breath. 
C)  Ascaris larvae are highly allergenic; when they are ingested, they cause an allergic reaction which includes coughing. 
D)  Ascaris is a pulmonary parasite; it only enters the intestine of people with other lung conditions, including asthma. 
E)  Ascaris, being anaerobic, form large cysts in pulmonary tissue; these accumulate in the lungs, causing coughing. 
A)  People inadvertently inhale Ascaris worms when they bring contaminated food close to their mouths; these cause pulmonary blockages. 
B)  Ingested Ascaris larvae penetrate intestinal capillaries, from where they are carried to the lungs, causing coughing and shortness of breath. 
C)  Ascaris larvae are highly allergenic; when they are ingested, they cause an allergic reaction which includes coughing. 
D)  Ascaris is a pulmonary parasite; it only enters the intestine of people with other lung conditions, including asthma. 
E)  Ascaris, being anaerobic, form large cysts in pulmonary tissue; these accumulate in the lungs, causing coughing.

Question 18

Macroscopic algae possess a special structure that acts as an anchor and is commonly called

Accepted Answer

A)  a thallus. 
B)  a holdfast. 
C)  roots. 
D)  the stipe. 
E)  the bladder. 
A)  a thallus. 
B)  a holdfast. 
C)  roots. 
D)  the stipe. 
E)  the bladder.

Question 19

Which of the statements regarding Naegleria fowleri is False?

Accepted Answer

A)  It is a small, Gram-negative, flagellated diplococcus. 
B)  It is swims though water as a flagellated form. 
C)  Once in a human host, it assumes an amoeboid form. 
D)  It causes primary amebic meningoencephalitis (brain eating disease). 
E)  It forms a cyst under adverse environmental conditions. 
A)  It is a small, Gram-negative, flagellated diplococcus. 
B)  It is swims though water as a flagellated form. 
C)  Once in a human host, it assumes an amoeboid form. 
D)  It causes primary amebic meningoencephalitis (brain eating disease). 
E)  It forms a cyst under adverse environmental conditions.

Question 20

Plant pathology grew in importance as a field of study after it was shown that the Irish potato blight was caused by

Accepted Answer

A)  bacteria. 
B)  viruses. 
C)  fungi. 
D)  amoeboid protozoa. 
E)  water molds. 
A)  bacteria. 
B)  viruses. 
C)  fungi. 
D)  amoeboid protozoa. 
E)  water molds.

Exam 12: The Eukaryotic Members of the Microbial World

Agar is obtained from

Dimorphic fungi

Schizogony

Which of the following statements regarding protozoa is False?

Protozoans are usually multicellular and found in arid environments.

Protozoans are an important part of the food chain, ingesting large numbers of

Why would it be more difficult to treat diseases in humans caused by members of the Eukarya than diseases caused by the Bacteria?

Paralytic shellfish poisoning occurs when humans eat shellfish that have fed on

Which of the statements BEST describes tapeworms?

The return of carbon dioxide to the atmosphere and nitrogen to the soil is due to the action of

Most of the medically important multicellular parasites are arthropods or helminths.

Select the True statement regarding algae.

Please select the False statement regarding plague and its transmission.

Sarcodina move by means of

Lichens may be an association of

How does Ascaris lumbricoides, an intestinal parasite, cause choking and pulmonary symptoms in some people?

Macroscopic algae possess a special structure that acts as an anchor and is commonly called

Which of the statements regarding Naegleria fowleri is False?

Plant pathology grew in importance as a field of study after it was shown that the Irish potato blight was caused by

Humans and the Microbial World

The Molecules of Life

Microscopy and Cell Structure

Dynamics of Microbial Growth

Control of Microbial Growth

Microbial Metabolism: Fueling Cell Growth

The Blueprint of Life, from DNA to Protein

Bacterial Genetics

Biotechnology

Identifying and Classifying Microorganisms

The Diversity of Bacteria and Archaea

Viruses, Viroids, and Prions

The Innate Immune Response

The Adaptive Immune Response

Host-Microbe Interactions

Immunological Disorders

Applications of Immune Responses

Epidemiology

Antimicrobial Medications

Respiratory System Infections

Skin Infections

Wound Infections

Digestive System Infections

Blood and Lymphatic Infections

Nervous System Infections

Genitourinary Tract Infections

Microbial Ecology

Environmental Microbiology: Treatment of Water, Wastes, and Polluted Habitats

Food Microbiology

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