Question 1

Why would all protozoa be expected to require large amounts of water in their habitats?

Accepted Answer

A)  Without being in water, they would quickly dehydrate (due to their small size) and die. 
B)  They require water to help them during photosynthesis by providing an electron source. 
C)  They require water to move around in to seek food particles and would be unable to move without water. 
D)  Without being in water, they would quickly undergo plasmolysis (due to their small size) and die. 
E)  None of the statements is correct. 
A)  Without being in water, they would quickly dehydrate (due to their small size) and die. 
B)  They require water to help them during photosynthesis by providing an electron source. 
C)  They require water to move around in to seek food particles and would be unable to move without water. 
D)  Without being in water, they would quickly undergo plasmolysis (due to their small size) and die. 
E)  None of the statements is correct.

Question 2

Diatoms are algae whose silicon dioxide-containing shells are useful economically as

Accepted Answer

A)  filters. 
B)  fertilizers. 
C)  stabilizers. 
D)  thickeners. 
E)  agar. 
A)  filters. 
B)  fertilizers. 
C)  stabilizers. 
D)  thickeners. 
E)  agar.

Question 3

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 4

One of the greatest causes of human deaths through time has been due to

Accepted Answer

A)  Giardia spp. 
B)  Histoplasma spp. 
C)  Plasmodium spp. 
D)  Trypanosoma spp. 
E)  Escherichia spp. 
A)  Giardia spp. 
B)  Histoplasma spp. 
C)  Plasmodium spp. 
D)  Trypanosoma spp. 
E)  Escherichia spp.

Question 5

Which of the following are characteristics of fungi?

Accepted Answer

A)  They have a peptidoglycan cell wall AND they may be photosynthetic. 
B)  Their cell wall contains chitin AND they use nutrients from dead or decaying organic matter. 
C)  Their cell wall contains cellulose AND they use nutrients from dead or decaying organic matter. 
D)  Their cytoplasmic membrane contains ergesterol AND they are always multicellular. 
E)  They have a nuclear membrane AND their cell wall contains cellulose. 
A)  They have a peptidoglycan cell wall AND they may be photosynthetic. 
B)  Their cell wall contains chitin AND they use nutrients from dead or decaying organic matter. 
C)  Their cell wall contains cellulose AND they use nutrients from dead or decaying organic matter. 
D)  Their cytoplasmic membrane contains ergesterol AND they are always multicellular. 
E)  They have a nuclear membrane AND their cell wall contains cellulose.

Question 6

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 7

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 8

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 9

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 10

Which are the three ways in which fungi cause illness in humans?
1) Hypersensitivity - person has allergic reaction to fungal components.
2) Intoxication - fungus produces a toxin that is ingested.
3) Immune suppression - fungus destroys all red blood cells.
4) Infection - fungus grows on body as a mycosis.

Accepted Answer

A)  1, 2, and 3 
B)  2, 3, and 4 
C)  1, 3, and 4 
D)  4 only 
E)  1, 2, and 4 
A)  1, 2, and 3 
B)  2, 3, and 4 
C)  1, 3, and 4 
D)  4 only 
E)  1, 2, and 4

Question 11

Which of the following is NOT a vector?

Accepted Answer

A)  Flea 
B)  Mosquito 
C)  Tick 
D)  Fly 
E)  Water 
A)  Flea 
B)  Mosquito 
C)  Tick 
D)  Fly 
E)  Water

Question 12

Fungal diseases are generally referred to as

Accepted Answer

A)  mycoses. 
B)  infections. 
C)  systemics. 
D)  infestations. 
E)  funguses. 
A)  mycoses. 
B)  infections. 
C)  systemics. 
D)  infestations. 
E)  funguses.

Question 13

Which disease is INCORRECTLY matched with its arthropod vector?

Accepted Answer

A)  Malaria-Anopheles mosquito 
B)  Plague-fleas 
C)  African sleeping sickness-sand fly 
D)  Lyme disease-ticks 
E)  Dengue fever-mosquitoes 
A)  Malaria-Anopheles mosquito 
B)  Plague-fleas 
C)  African sleeping sickness-sand fly 
D)  Lyme disease-ticks 
E)  Dengue fever-mosquitoes

Question 14

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 15

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 16

The site in a photosynthetic eukaryotic cell where photosynthesis occurs is the

Accepted Answer

A)  nucleus. 
B)  carotenoid. 
C)  mitochondria. 
D)  chloroplast. 
E)  Golgi. 
A)  nucleus. 
B)  carotenoid. 
C)  mitochondria. 
D)  chloroplast. 
E)  Golgi.

Question 17

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 18

Fungi are often capable of locomotion through the use of flagella.

Accepted Answer

A) True 
 B)False

Question 19

Slime molds and water molds are types of fungi.

Accepted Answer

A) True 
 B)False

Question 20

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

Exam 12: The Eukaryotic Members of the Microbial World

Why would all protozoa be expected to require large amounts of water in their habitats?

Diatoms are algae whose silicon dioxide-containing shells are useful economically as

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

One of the greatest causes of human deaths through time has been due to

Which of the following are characteristics of fungi?

Sarcodina move by means of

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

Most fungi are

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

Which of the following is NOT a vector?

Fungal diseases are generally referred to as

Which disease is INCORRECTLY matched with its arthropod vector?

Agar is obtained from

Which of the following statements regarding tapeworms is FALSE?

The site in a photosynthetic eukaryotic cell where photosynthesis occurs is the

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

Fungi are often capable of locomotion through the use of flagella.

Slime molds and water molds are types of fungi.

Which are not arthropods?

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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