Question 1

The hydrogen and carbon dioxide produced in the gut of the lower termite are used to produce __________ by symbiotic microbes.

Accepted Answer

A) methane 
B) lactate 
C) fatty acids 
D) amino acids 
E) glucose 
A) methane 
B) lactate 
C) fatty acids 
D) amino acids 
E) glucose

Question 2

In order to make sufficient ATP for symbiotic nitrogen fixation,the plant supplies the symbionts with ____________ for energy production.

Accepted Answer

A) NADH 
B) glucose 
C) C3 acids 
D) fatty acids 
E) C4-dicarboxylic acids 
A) NADH 
B) glucose 
C) C3 acids 
D) fatty acids 
E) C4-dicarboxylic acids

Question 3

Which of these enzymes,isolable from shipworm endosymbionts,shows commercial potential?

Accepted Answer

A) Amylase 
B) Protease 
C) Lipase 
D) Nuclease 
E) Cellulase 
A) Amylase 
B) Protease 
C) Lipase 
D) Nuclease 
E) Cellulase

Question 4

Helicobacter pylori is now known to cause stomach and duodenal ulcers.Marshall's drastic experimental ingestion of this microbe was required to prove beyond doubt that this was the causative agent.Why do you imagine that his experiment was necessary? (Select all that apply)

Accepted Answer

A) The hostile stomach pH was regarded as a sterile environment 
B) Prevailing medical opinion was that stomach ulcers were caused by viruses 
C) Cause and effect in pathogenesis always requires human experimentation 
D) Antibiotic therapies had been tried in the past and shown ineffective 
E) Medical opinion related ulcers to stress,diet and smoking 
A) The hostile stomach pH was regarded as a sterile environment 
B) Prevailing medical opinion was that stomach ulcers were caused by viruses 
C) Cause and effect in pathogenesis always requires human experimentation 
D) Antibiotic therapies had been tried in the past and shown ineffective 
E) Medical opinion related ulcers to stress,diet and smoking

Question 5

Scientist are able to make an insect symbiont free by this method.

Accepted Answer

A) Hatching insect eggs in a sterile environment. 
B) Treating the insect with an antibiotic. 
C) Mating the insect with a symbiont free insect. 
D) Irradiating insect eggs. 
E) Putting the insect on a different diet. 
A) Hatching insect eggs in a sterile environment. 
B) Treating the insect with an antibiotic. 
C) Mating the insect with a symbiont free insect. 
D) Irradiating insect eggs. 
E) Putting the insect on a different diet.

Question 6

Most microbial symbionts of invertebrates are in this group.

Accepted Answer

A) yeast 
B) Archaea 
C) protozoa 
D) algae 
E) Bacteria 
A) yeast 
B) Archaea 
C) protozoa 
D) algae 
E) Bacteria

Question 7

Most microbe-host relationships are harmful.

Accepted Answer

A) True 
 B)False

The hydrogen and carbon dioxide produced in the gut of the lower termite are used to produce __________ by symbiotic microbes.

In order to make sufficient ATP for symbiotic nitrogen fixation,the plant supplies the symbionts with ____________ for energy production.

Which of these enzymes,isolable from shipworm endosymbionts,shows commercial potential?

Helicobacter pylori is now known to cause stomach and duodenal ulcers.Marshall's drastic experimental ingestion of this microbe was required to prove beyond doubt that this was the causative agent.Why do you imagine that his experiment was necessary? (Select all that apply)

Scientist are able to make an insect symbiont free by this method.

Most microbial symbionts of invertebrates are in this group.

Most microbe-host relationships are harmful.

The Microbial World

Bacteria

Eukaryal Microbes

Archaea

Viruses

Cultivating Microorganisms

DNA Replication and Gene Expression

Viral Replication Strategies

Bacterial Genetic Analysis

Microbial Genomics

Regulation of Gene Expression

Microbial Biotechnology

Metabolism

Biogeochemical Cycles

Microbial Ecosystems

The Microbiology of Food and Water

Introduction to Infectious Diseases

Innate Host Defenses Against Microbial Invasion

Adaptive Immunity

Virulence Factors and Pathogenic Mechanisms of Bacterial Infections

Viral Pathogenesis

Eukaryal Microbe Pathogenesis

Control of Infectious Diseases

Filters

Exam 17: Microbial Symbionts

The hydrogen and carbon dioxide produced in the gut of the lower termite are used to produce __________ by symbiotic microbes.

In order to make sufficient ATP for symbiotic nitrogen fixation,the plant supplies the symbionts with ____________ for energy production.

Which of these enzymes,isolable from shipworm endosymbionts,shows commercial potential?

Helicobacter pylori is now known to cause stomach and duodenal ulcers.Marshall's drastic experimental ingestion of this microbe was required to prove beyond doubt that this was the causative agent.Why do you imagine that his experiment was necessary? (Select all that apply)

Scientist are able to make an insect symbiont free by this method.

Most microbial symbionts of invertebrates are in this group.

Most microbe-host relationships are harmful.

The Microbial World

Bacteria

Eukaryal Microbes

Archaea

Viruses

Cultivating Microorganisms

DNA Replication and Gene Expression

Viral Replication Strategies

Bacterial Genetic Analysis

Microbial Genomics

Regulation of Gene Expression

Microbial Biotechnology

Metabolism

Biogeochemical Cycles

Microbial Ecosystems

The Microbiology of Food and Water

Introduction to Infectious Diseases

Innate Host Defenses Against Microbial Invasion

Adaptive Immunity

Virulence Factors and Pathogenic Mechanisms of Bacterial Infections

Viral Pathogenesis

Eukaryal Microbe Pathogenesis

Control of Infectious Diseases

Filters