Question 1

Convergent evolution

Accepted Answer

A)  explains the morphological similarity yet major genetic differences found between slime molds and fungi. 
B)  refers to two different organisms that develop similar characteristics in adaptation to similar environments 
C)  refers to the one organism dividing into two AND refers to two different organisms that develop similar characteristics in adaptation to similar environments. 
D)  explains the morphological similarity yet major genetic differences found between slime molds and fungi AND refers to two different organisms that develop similar characteristics in adaptation to similar environments. 
E)  refers to one organism dividing into two AND explains the morphological similarity yet major genetic differences found between slime molds and fungi. 
A)  explains the morphological similarity yet major genetic differences found between slime molds and fungi. 
B)  refers to two different organisms that develop similar characteristics in adaptation to similar environments 
C)  refers to the one organism dividing into two AND refers to two different organisms that develop similar characteristics in adaptation to similar environments. 
D)  explains the morphological similarity yet major genetic differences found between slime molds and fungi AND refers to two different organisms that develop similar characteristics in adaptation to similar environments. 
E)  refers to one organism dividing into two AND explains the morphological similarity yet major genetic differences found between slime molds and fungi.

Question 2

Which statement about aflatoxins is NOT True?

Accepted Answer

A)  They are produced by Aspergillus. 
B)  They are possible carcinogens. 
C)  They may be found in peanuts. 
D)  They are toxins. 
E)  They are produced by Candida. 
A)  They are produced by Aspergillus. 
B)  They are possible carcinogens. 
C)  They may be found in peanuts. 
D)  They are toxins. 
E)  They are produced by Candida.

Question 3

Which are not arthropods?

Accepted Answer

A)  Mosquitoes 
B)  Fleas 
C)  Lice 
D)  Ticks 
E)  Flukes 
A)  Mosquitoes 
B)  Fleas 
C)  Lice 
D)  Ticks 
E)  Flukes

Question 4

Sexual reproduction in algae involves meiosis that results in the production of

Accepted Answer

A)  spores with twice as much DNA as the parental cells. 
B)  gametes with half the amount of DNA as in the parental cells. 
C)  spores with the same amount of DNA as the parental cells. 
D)  swarming cells with the same amount of DNA as the parental cells. 
E)  gametes with the same amount of DNA as in the parental cells. 
A)  spores with twice as much DNA as the parental cells. 
B)  gametes with half the amount of DNA as in the parental cells. 
C)  spores with the same amount of DNA as the parental cells. 
D)  swarming cells with the same amount of DNA as the parental cells. 
E)  gametes with the same amount of DNA as in the parental cells.

Question 5

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.
-Yersinia pestis is transmitted by fleas. The organism forms biofilms in the digestive tract of infected fleas, often blocking the tract. This prevents the flea from feeding properly, causing bacteria to be regurgitated into the bite wound that the flea has made. In this situation, the flea is a

Accepted Answer

A)  mechanical vector. 
B)  biological vector. 
C)  mechanical host. 
D)  biological host. 
E)  dead-end host. 
A)  mechanical vector. 
B)  biological vector. 
C)  mechanical host. 
D)  biological host. 
E)  dead-end host.

Question 6

Please select the INCORRECT statement regarding helminths and the diseases they cause.

Accepted Answer

A)  Some helminths are inadvertently eaten with food. For example, eating undercooked pork containing Trichinella spiralis larvae is the most common cause of trichinellosis. 
B)  Some helminths are transmitted through insect bites. For example, Wuchereria bancrofti, the cause of elephantiasis, is transmitted by mosquitoes. 
C)  Some helminths are inadvertently ingested. For example, Onchocerca volvulus, the cause of River blindness, is transmitted by drinking contaminated water or eating fish carrying this parasite. 
D)  Some helminths burrow into people. For example, immature forms of hookworm larvae live in the soil and can burrow through human skin. 
E)  Sometime helminth eggs are ingested on the surface of contaminated foods. For example, pinworm eggs (Enterobius vermicularis) may be transmitted a food surface. 
A)  Some helminths are inadvertently eaten with food. For example, eating undercooked pork containing Trichinella spiralis larvae is the most common cause of trichinellosis. 
B)  Some helminths are transmitted through insect bites. For example, Wuchereria bancrofti, the cause of elephantiasis, is transmitted by mosquitoes. 
C)  Some helminths are inadvertently ingested. For example, Onchocerca volvulus, the cause of River blindness, is transmitted by drinking contaminated water or eating fish carrying this parasite. 
D)  Some helminths burrow into people. For example, immature forms of hookworm larvae live in the soil and can burrow through human skin. 
E)  Sometime helminth eggs are ingested on the surface of contaminated foods. For example, pinworm eggs (Enterobius vermicularis) may be transmitted a food surface.

Question 7

Algae may directly infect humans and cause disease.

Accepted Answer

A) True 
 B)False

Question 8

All fungi have ________ in their cell walls.

Accepted Answer

A)  chitin 
B)  cellulose 
C)  pectin 
D)  peptidoglycan 
E)  ergesterol 
A)  chitin 
B)  cellulose 
C)  pectin 
D)  peptidoglycan 
E)  ergesterol

Question 9

When cellular slime molds run out of food, they form a

Accepted Answer

A)  plasmodium. 
B)  slug. 
C)  myxamoeba. 
D)  rhizoid. 
E)  bladder. 
A)  plasmodium. 
B)  slug. 
C)  myxamoeba. 
D)  rhizoid. 
E)  bladder.

Question 10

Most fungi are

Accepted Answer

A)  aerobes or facultative anaerobes. 
B)  obligate anaerobes. 
C)  obligate aerobes. 
D)  microaerophiles. 
E)  photosynthetic. 
A)  aerobes or facultative anaerobes. 
B)  obligate anaerobes. 
C)  obligate aerobes. 
D)  microaerophiles. 
E)  photosynthetic.

Question 11

Pediculus humanus

Accepted Answer

A)  only uses humans as a host AND is carried by mosquitoes. 
B)  only uses humans as a host AND can transmit a bacterial disease. 
C)  only infects feet AND can transmit a bacterial disease. 
D)  can transmit a bacterial disease AND only infects feet. 
E)  is an obligate intracellular parasite AND only uses humans as a host. 
A)  only uses humans as a host AND is carried by mosquitoes. 
B)  only uses humans as a host AND can transmit a bacterial disease. 
C)  only infects feet AND can transmit a bacterial disease. 
D)  can transmit a bacterial disease AND only infects feet. 
E)  is an obligate intracellular parasite AND only uses humans as a host.

Question 12

The terms yeast, mold, and mushrooms refers to fungal

Accepted Answer

A)  reproduction. 
B)  nutrition. 
C)  morphology. 
D)  parasites. 
E)  staining. 
A)  reproduction. 
B)  nutrition. 
C)  morphology. 
D)  parasites. 
E)  staining.

Question 13

Typically, arthropods serve as vectors of disease, while helminths directly cause disease.

Accepted Answer

A) True 
 B)False

Question 14

Mycorrhizae

Accepted Answer

A)  are vital for the survival of lichens AND are vital for the survival of many plants. 
B)  are vital for the survival of many plants AND increase the absorptive ability of roots. 
C)  are vital for the survival of many plants AND are used in the production of wine, beer, and bread. 
D)  increase the absorptive ability of roots AND are used in the production of wine, beer, and bread. 
E)  are used in the production of wine, beer, and bread AND are vital for the survival of lichens. 
A)  are vital for the survival of lichens AND are vital for the survival of many plants. 
B)  are vital for the survival of many plants AND increase the absorptive ability of roots. 
C)  are vital for the survival of many plants AND are used in the production of wine, beer, and bread. 
D)  increase the absorptive ability of roots AND are used in the production of wine, beer, and bread. 
E)  are used in the production of wine, beer, and bread AND are vital for the survival of lichens.

Question 15

Once Y. pestis is in the human host, it is ingested by macrophages. Conditions within the macrophage activate certain genes in the bacterium, one of which is a gene for a capsule production. The capsule

Accepted Answer

A)  allows the bacteria to float in water. 
B)  allows the bacteria to exchange DNA with other bacteria. 
C)  allows the bacteria to avoid phagocytosis. 
D)  provides a source of nutrients for the bacteria. 
E)  allows the bacteria to survive excess heat. 
A)  allows the bacteria to float in water. 
B)  allows the bacteria to exchange DNA with other bacteria. 
C)  allows the bacteria to avoid phagocytosis. 
D)  provides a source of nutrients for the bacteria. 
E)  allows the bacteria to survive excess heat.

Question 16

Which of the following definitions is CORRECT?

Accepted Answer

A)  Saprophytes-organisms that take in nutrients from dead and decaying matter. 
B)  Mycelium-thread-like structure that characterizes the growth of most fungi and some bacterial species. 
C)  Zooplankton-microscopic free-floating photosynthetic organisms. 
D)  Kinetoplastids-a group of protozoa that penetrate host cells by means of a structure called an apical complex. 
E)  Proglottids-short, non-segmented, bilaterally symmetrical flatworms. 
A)  Saprophytes-organisms that take in nutrients from dead and decaying matter. 
B)  Mycelium-thread-like structure that characterizes the growth of most fungi and some bacterial species. 
C)  Zooplankton-microscopic free-floating photosynthetic organisms. 
D)  Kinetoplastids-a group of protozoa that penetrate host cells by means of a structure called an apical complex. 
E)  Proglottids-short, non-segmented, bilaterally symmetrical flatworms.

Question 17

Which of the following statements regarding tapeworms is False?

Accepted Answer

A)  They absorb nutrients from the host's gut through their skin. 
B)  A single worm contains broth male and female reproductive organs. 
C)  They complete their life cycle in a single host. 
D)  They can sometimes cause neurological signs and symptoms in the host. 
E)  They do not have a digestive system. 
A)  They absorb nutrients from the host's gut through their skin. 
B)  A single worm contains broth male and female reproductive organs. 
C)  They complete their life cycle in a single host. 
D)  They can sometimes cause neurological signs and symptoms in the host. 
E)  They do not have a digestive system.

Question 18

Lyme disease is transmitted by

Accepted Answer

A)  ticks. 
B)  lice. 
C)  mosquitoes. 
D)  fleas. 
E)  bacteria. 
A)  ticks. 
B)  lice. 
C)  mosquitoes. 
D)  fleas. 
E)  bacteria.

Question 19

The ability to exist as either a trophozoite or a cyst is characteristic of many

Accepted Answer

A)  fungi. 
B)  viruses. 
C)  protozoa. 
D)  bacteria. 
E)  archaea. 
A)  fungi. 
B)  viruses. 
C)  protozoa. 
D)  bacteria. 
E)  archaea.

Question 20

Why were the slime molds and water molds once considered to be fungi?

Accepted Answer

A)  Early identification methods focused on appearances rather than biochemical characteristics. 
B)  Early identification methods focused on appearances rather than genetic similarities/differences. 
C)  Water molds and slime molds are STILL considered to be fungi. 
D)  They have the same material in their cell walls (chitin) that fungi possess. 
E)  Water molds and slime molds always occur in the same habitats as fungi. 
A)  Early identification methods focused on appearances rather than biochemical characteristics. 
B)  Early identification methods focused on appearances rather than genetic similarities/differences. 
C)  Water molds and slime molds are STILL considered to be fungi. 
D)  They have the same material in their cell walls (chitin) that fungi possess. 
E)  Water molds and slime molds always occur in the same habitats as fungi.

Exam 12: The Eukaryotic Members of the Microbial World

Convergent evolution

Which statement about aflatoxins is NOT True?

Which are not arthropods?

Sexual reproduction in algae involves meiosis that results in the production of

Please select the INCORRECT statement regarding helminths and the diseases they cause.

Algae may directly infect humans and cause disease.

All fungi have ________ in their cell walls.

When cellular slime molds run out of food, they form a

Most fungi are

Pediculus humanus

The terms yeast, mold, and mushrooms refers to fungal

Typically, arthropods serve as vectors of disease, while helminths directly cause disease.

Mycorrhizae

Once Y. pestis is in the human host, it is ingested by macrophages. Conditions within the macrophage activate certain genes in the bacterium, one of which is a gene for a capsule production. The capsule

Which of the following definitions is CORRECT?

Which of the following statements regarding tapeworms is False?

Lyme disease is transmitted by

The ability to exist as either a trophozoite or a cyst is characteristic of many

Why were the slime molds and water molds once considered to be fungi?

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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