C HAPTER 24: M ICROBIAL S YMBIOSES WITH
H UMANS
Test Bank for Brock Biology of Microorganism 16th Edition by Michael T.
Madigan
24.1 Multiple Choice Questions
1. What is TRUE about stomach microbiota ?
A) Few microbes can survive because it is so acidic.
B) The alkaline environment supports a wide variet y of species.
C) Despite the acidic of the stomach, diverse phylot ypes of resident
microbes thrive in the stomach.
D) There is a rich diversit y of transient mi crobes, but few resident
microbes.
2. Which of the following is a benefit of studying the human microbiome?
A) It may allow for the development of personalized medical treatments.
B) It may allow for more finel y targeted probiotics.
C) It may allow for increased recognition of disease biomarkers.
D) All of these answer choices are possible benefits.
3. Which of the following is TRUE about research on the human
microbiome?
A) Advanced nucleic acid seq uencing techniques were needed before a
good understanding of its microbial abundance and diversit y could be
developed.
B) Culture-dependent techniques full y elucidated its microbial diversit y.
C) Cultivation was unimportant in studying its microbial diversity .
D) None of the answers are correct.
,4. Which study set out to generate genomic sequences from 200 strains of
bacteria isolated from the human body?
A) the Human Microbiome Project
B) NIH JumpStart Program
C) MetaGenoPolis
D) the Integrative Human Microbiome Project
5. Based upon microbiome projects, the dominant microbial species on the
skin is
A) Corynebacterium
B) Streptococcus
C) Staphylococcus
D) Propionibacterium
6. Important bacterial populations in the stomach include
A) Firmicutes.
B) Bacteriodetes.
C) Veilonella.
D) All of these answer choices.
7. ________ dominate the infant gut microbiota.
A) Candida
B) Actinobacteria
C) Firmicutes
D) Corynebacteria
8. Weight gain and obesit y may be partl y caused by certain gut microbial
communities that
A) absorb more vitamins and essenti al amino acids.
B) produce more volatile fatt y acids by fermentation.
C) stimulate the gut endothelium to absorb more sugars.
, D) produce more hydrogen gas by fermentation.
9. The pouch at the beginning of the large intestine is called the
A) cardia.
B) ileum.
C) colon.
D) cecum.
10.One microenvironment of the skin is an area where glands produce an oil y
substance called
A) mucus.
B) sebum.
C) fimbrae.
D) lipid A.
11.Normal microbiota in the duoden um is
A) similar to the microbiota in the stomach.
B) dominated by aerobic organisms.
C) tolerant to highl y alkaline environments.
D) tolerant to high salinit y.
12.Which of the following are NOT found in the gastrointestinal tract of
healthy humans?
A) Bacteroides
B) Clostridium
C) Escherichia coli
D) protists
13.The following compounds are all produced by intestinal microbiota
EXCEPT
A) thymine.
B) vitamin C.
H UMANS
Test Bank for Brock Biology of Microorganism 16th Edition by Michael T.
Madigan
24.1 Multiple Choice Questions
1. What is TRUE about stomach microbiota ?
A) Few microbes can survive because it is so acidic.
B) The alkaline environment supports a wide variet y of species.
C) Despite the acidic of the stomach, diverse phylot ypes of resident
microbes thrive in the stomach.
D) There is a rich diversit y of transient mi crobes, but few resident
microbes.
2. Which of the following is a benefit of studying the human microbiome?
A) It may allow for the development of personalized medical treatments.
B) It may allow for more finel y targeted probiotics.
C) It may allow for increased recognition of disease biomarkers.
D) All of these answer choices are possible benefits.
3. Which of the following is TRUE about research on the human
microbiome?
A) Advanced nucleic acid seq uencing techniques were needed before a
good understanding of its microbial abundance and diversit y could be
developed.
B) Culture-dependent techniques full y elucidated its microbial diversit y.
C) Cultivation was unimportant in studying its microbial diversity .
D) None of the answers are correct.
,4. Which study set out to generate genomic sequences from 200 strains of
bacteria isolated from the human body?
A) the Human Microbiome Project
B) NIH JumpStart Program
C) MetaGenoPolis
D) the Integrative Human Microbiome Project
5. Based upon microbiome projects, the dominant microbial species on the
skin is
A) Corynebacterium
B) Streptococcus
C) Staphylococcus
D) Propionibacterium
6. Important bacterial populations in the stomach include
A) Firmicutes.
B) Bacteriodetes.
C) Veilonella.
D) All of these answer choices.
7. ________ dominate the infant gut microbiota.
A) Candida
B) Actinobacteria
C) Firmicutes
D) Corynebacteria
8. Weight gain and obesit y may be partl y caused by certain gut microbial
communities that
A) absorb more vitamins and essenti al amino acids.
B) produce more volatile fatt y acids by fermentation.
C) stimulate the gut endothelium to absorb more sugars.
, D) produce more hydrogen gas by fermentation.
9. The pouch at the beginning of the large intestine is called the
A) cardia.
B) ileum.
C) colon.
D) cecum.
10.One microenvironment of the skin is an area where glands produce an oil y
substance called
A) mucus.
B) sebum.
C) fimbrae.
D) lipid A.
11.Normal microbiota in the duoden um is
A) similar to the microbiota in the stomach.
B) dominated by aerobic organisms.
C) tolerant to highl y alkaline environments.
D) tolerant to high salinit y.
12.Which of the following are NOT found in the gastrointestinal tract of
healthy humans?
A) Bacteroides
B) Clostridium
C) Escherichia coli
D) protists
13.The following compounds are all produced by intestinal microbiota
EXCEPT
A) thymine.
B) vitamin C.
