Question 1

The reason coral reefs are among the most productive and successful ecosystems is due to

Accepted Answer

A) the coral-dinoflagellate mutualistic relationship. 
B) the lichen mutualistic relationship. 
C) commensalisms. 
D) all of these 
A) the coral-dinoflagellate mutualistic relationship. 
B) the lichen mutualistic relationship. 
C) commensalisms. 
D) all of these A

Question 2

Pseudonocardia is an organism that is hosted by

Accepted Answer

A) wood-eating insects. 
B) marine invertebrates. 
C) ants that cultivate fungal gardens. 
D) people with severe acne. 
A) wood-eating insects. 
B) marine invertebrates. 
C) ants that cultivate fungal gardens. 
D) people with severe acne. C

Question 3

A unidirectional process where a specific compound released by one organism has a negative effect on another organism is called

Accepted Answer

A) predation. 
B) commensalism. 
C) negative cooperation. 
D) amensalism. 
A) predation. 
B) commensalism. 
C) negative cooperation. 
D) amensalism. D

Question 4

When Nitrobacter utilizes nitrite produced from ammonia by Nitrosomonas to obtain energy by converting the nitrite to nitrate,the relationship between the two organisms is

Accepted Answer

A) commensal. 
B) amensal. 
C) mutual. 
D) parasitic. 
A) commensal. 
B) amensal. 
C) mutual. 
D) parasitic.

Question 5

In a lichen,the fungal partner

Accepted Answer

A) protects the alga from excess light intensities. 
B) provides water and minerals to the alga. 
C) provides a substratum within which the alga grows. 
D) all of these 
A) protects the alga from excess light intensities. 
B) provides water and minerals to the alga. 
C) provides a substratum within which the alga grows. 
D) all of these

Question 6

Insects frequently contain bacteria in their cytoplasm,and these bacteria form a mutualistic association with their host.

Accepted Answer

A) True 
 B)False

Question 7

A relationship in which one organism is found on the surface of another is referred to as a(n)___________.

Accepted Answer

The answer of A relationship in which one organism is...

Question 8

The lower genitourinary tract is usually free of microorganisms.

Accepted Answer

A) True 
 B)False

Question 9

Dinoflagellates that exist endosymbiotically within a variety of marine invertebrates are called

Accepted Answer

A) endoflagellates. 
B) parasites. 
C) endotrophic. 
D) zooxanthellae. 
A) endoflagellates. 
B) parasites. 
C) endotrophic. 
D) zooxanthellae.

Question 10

A physical relationship where an organism hosts more than one symbiont is known as a

Accepted Answer

A) clade. 
B) consortium. 
C) partnership. 
D) cojoining. 
A) clade. 
B) consortium. 
C) partnership. 
D) cojoining.

Question 11

Which of the following is not a category of symbiosis?

Accepted Answer

A) mutualism 
B) phoresis 
C) commensalism 
D) parasitism 
A) mutualism 
B) phoresis 
C) commensalism 
D) parasitism

Question 12

A bacterial genus that is found in large numbers in the intestinal tract of breast-fed infants is

Accepted Answer

A) Bacteroides. 
B) Bifidobacteria. 
C) Escherichia. 
D) Doderlein's bacillus. 
A) Bacteroides. 
B) Bifidobacteria. 
C) Escherichia. 
D) Doderlein's bacillus.

Question 13

Which of the following would you expect to find in the tonsilar crypts?

Accepted Answer

A) Micrococcus 
B) Staphylococcus 
C) Streptococcus 
D) Neisseria 
A) Micrococcus 
B) Staphylococcus 
C) Streptococcus 
D) Neisseria

Question 14

A _________ is any disease-producing microorganism.

Accepted Answer

The answer of A _________ is any disease-producing microorganism....

Question 15

In the host-parasite relationship,it is advantageous for the parasite to disable and kill its host as quickly as possible.

Accepted Answer

A) True 
 B)False

Question 16

Gram-positive bacteria such as Propionibacterium acnes limit the growth of gram-negative bacteria and some fungi on the human skin by converting secreted __________ to compounds with antimicrobial activity.

Accepted Answer

A) lipids 
B) organic acids 
C) salts 
D) urea 
A) lipids 
B) organic acids 
C) salts 
D) urea

Question 17

Any microorganism that spends a portion of its life associated with another organism of a different species is engaged in

Accepted Answer

A) symbiosis. 
B) synergy. 
C) parasitism. 
D) commensalism. 
A) symbiosis. 
B) synergy. 
C) parasitism. 
D) commensalism.

Question 18

Mussels and sponges sometimes contain methanotrophs as intracellular symbionts because the methanotrophs

Accepted Answer

A) remove otherwise toxic levels of methane from the environment. 
B) convert methane to carbohydrate for use by the host. 
C) allow the partnership to use hydrogen sulfide as a source of electrons. 
D) all of the choices 
A) remove otherwise toxic levels of methane from the environment. 
B) convert methane to carbohydrate for use by the host. 
C) allow the partnership to use hydrogen sulfide as a source of electrons. 
D) all of the choices

Question 19

Which of the following areas of the human body is(are)not normally free of microorganisms?

Accepted Answer

A) respiratory tract 
B) intestinal tract 
C) eyes 
D) all of the choices 
A) respiratory tract 
B) intestinal tract 
C) eyes 
D) all of the choices

Question 20

In the rumen,food is quickly attacked by cellulase

Accepted Answer

A) enzymes produced by the ruminant. 
B) enzymes produced by microbes. 
C) enzymes produced by both the ruminant and the microbe. 
D) archeons. 
A) enzymes produced by the ruminant. 
B) enzymes produced by microbes. 
C) enzymes produced by both the ruminant and the microbe. 
D) archeons.

Exam 32: Microbial Interactions

The reason coral reefs are among the most productive and successful ecosystems is due to

Pseudonocardia is an organism that is hosted by

A unidirectional process where a specific compound released by one organism has a negative effect on another organism is called

When Nitrobacter utilizes nitrite produced from ammonia by Nitrosomonas to obtain energy by converting the nitrite to nitrate,the relationship between the two organisms is

In a lichen,the fungal partner

Insects frequently contain bacteria in their cytoplasm,and these bacteria form a mutualistic association with their host.

A relationship in which one organism is found on the surface of another is referred to as a(n)___________.

The lower genitourinary tract is usually free of microorganisms.

Dinoflagellates that exist endosymbiotically within a variety of marine invertebrates are called

A physical relationship where an organism hosts more than one symbiont is known as a

Which of the following is not a category of symbiosis?

A bacterial genus that is found in large numbers in the intestinal tract of breast-fed infants is

Which of the following would you expect to find in the tonsilar crypts?

A _________ is any disease-producing microorganism.

In the host-parasite relationship,it is advantageous for the parasite to disable and kill its host as quickly as possible.

Gram-positive bacteria such as Propionibacterium acnes limit the growth of gram-negative bacteria and some fungi on the human skin by converting secreted __________ to compounds with antimicrobial activity.

Any microorganism that spends a portion of its life associated with another organism of a different species is engaged in

Mussels and sponges sometimes contain methanotrophs as intracellular symbionts because the methanotrophs

Which of the following areas of the human body is(are)not normally free of microorganisms?

In the rumen,food is quickly attacked by cellulase

The Evolution of Microorganisms and Microbiology

Microscopy

Bacterial Cell Structure

Archaeal Cell Structure

Eukaryotic Cell Structure

Viruses and Other Acellular Infectious Agents

Microbial Growth

Control of Microorganisms in the Environment

Antimicrobial Chemotherapy

Introduction to Metabolism

Catabolism: Energy Release and Conservation

Anabolism: the Use of Energy in Biosynthesis

Bacterial Genome Replication and Expression

Regulation of Bacterial Cellular Processes

Eukaryotic and Archaeal Genome Replication and Expression

Mechanisms of Genetic Variation

Recombinant Dna Technology

Microbial Genomics

Microbial Taxonomy and the Evolution of Diversity

The Archaea

The Deinococci,mollicutes,and Nonproteobacterial Gram-Negative Bacteria

The Proteobacteria

Firmicutes: the Low G 1 C Gram-Positive Bacteria

Actinobacteria: the High G 1 C Gram-Positive Bacteria

The Protists

The Fungi Eumycota

Viruses

Biogeochemical Cycling and Global Climate Change

Methods in Microbial Ecology

Microorganisms in Marine and Freshwater Ecosystems

Microorganisms in Terrestrial Ecosystems

Innate Host Resistance

Adaptive Immunity

Pathogenicity and Infection

Clinical Microbiology and Immunology

Epidemiology and Public Health Microbiology

Human Diseases Caused by Viruses and Prions

Human Diseases Caused by Bacteria

Human Diseases Caused by Fungi and Protists

Microbiology of Food

Biotechnology and Industrial Microbiology

Applied Environmental Microbiology

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