C HAPTER 9: M ICROBIAL S YSTEMS
B IOLOGY
Test Bank for Brock Biology of Microorganism 16th Edition by Michael T.
Madigan
9.1 Multiple Choice Questions
1. ______ of prokaryotic genomes are now available in public databases.
A) Dozens
B) Hundreds
C) Thousands
D) Millions
2. Based on the table of average intron frequency given below, predict the
relative order of genome size for these four eukaryotic organisms.
Organism Average Intron
Frequency
Cryptosporidium 0
parvum
Plasmodium 1
falciparum
Arabidopsis thaliana 5
Homo sapiens 8
A) Homo sapiens > Arabidopsis thaliana > Plasmodium falciparum >
Cryptosporidium parvum
B) Cryptosporidium parvum > Plasmodium falciparum > Arabidopsis
thaliana > Homo sapiens
, C) Homo sapiens > Cryptosporidium parvum > Plasmodium falciparum >
Arabidopsis thaliana
D) Intron frequency cannot be used to predict genome size in
eukaryotes.
3. In general, prokaryotic genome size is linked to its metabol ism and
interaction with the environment. Which type of prokaryote t ypicall y has
the smallest genome?
A) parasite
B) endosymbiont
C) autotroph
D) free-living heterotroph
4. Why has research in metab olomics been slower than in genomics,
transcriptomics, and proteomics?
A) Screening for metabolites is technicall y challenging due to their
diversit y.
B) Procedures have not yet been developed for studying the metabolome.
C) The molecules studied in metabolomi cs are too small for easy
anal ysis.
D) Individual cells are too small to allow metabolomic anal ysis using
existing techniques.
5. The pan genome of a species is the genomic content that is
A) common to all strains of the same species.
B) present in one or more strains of the same species.
C) shared with all other prokaryotes.
D) hypothetical or uncharacterized genome content of a species.
6. The advantage(s) of second -generation DNA sequencing compared to the
Sanger method are the result of
A) miniaturization of reaction size.
, B) increased computing power.
C) increased length of DNA sequences obtained.
D) miniaturization of reaction size and increased computer power.
7. Within Archaea and Bacteria, one megabase pair (Mbp) of DNA encodes
about ______ open reading frames.
A) 10
B) 100
C) 1,000
D) 10,000
8. Most mobile DNA co nsists of
A) transposable elements.
B) introns.
C) linear chromosomes.
D) plasmids.
9. Mobile DNA elements are more common in the genomes of
A) Archaea.
B) hyperthermophiles.
C) rapidl y evolving species.
D) pathogens.
10.The total genetic complement of all cells within a microbial communit y is
called a(n)
A) chromosomal island.
B) interactome.
C) metagenome.
D) metabolome.
11.The first genome sequenced was that of a(n)
A) virus.
B IOLOGY
Test Bank for Brock Biology of Microorganism 16th Edition by Michael T.
Madigan
9.1 Multiple Choice Questions
1. ______ of prokaryotic genomes are now available in public databases.
A) Dozens
B) Hundreds
C) Thousands
D) Millions
2. Based on the table of average intron frequency given below, predict the
relative order of genome size for these four eukaryotic organisms.
Organism Average Intron
Frequency
Cryptosporidium 0
parvum
Plasmodium 1
falciparum
Arabidopsis thaliana 5
Homo sapiens 8
A) Homo sapiens > Arabidopsis thaliana > Plasmodium falciparum >
Cryptosporidium parvum
B) Cryptosporidium parvum > Plasmodium falciparum > Arabidopsis
thaliana > Homo sapiens
, C) Homo sapiens > Cryptosporidium parvum > Plasmodium falciparum >
Arabidopsis thaliana
D) Intron frequency cannot be used to predict genome size in
eukaryotes.
3. In general, prokaryotic genome size is linked to its metabol ism and
interaction with the environment. Which type of prokaryote t ypicall y has
the smallest genome?
A) parasite
B) endosymbiont
C) autotroph
D) free-living heterotroph
4. Why has research in metab olomics been slower than in genomics,
transcriptomics, and proteomics?
A) Screening for metabolites is technicall y challenging due to their
diversit y.
B) Procedures have not yet been developed for studying the metabolome.
C) The molecules studied in metabolomi cs are too small for easy
anal ysis.
D) Individual cells are too small to allow metabolomic anal ysis using
existing techniques.
5. The pan genome of a species is the genomic content that is
A) common to all strains of the same species.
B) present in one or more strains of the same species.
C) shared with all other prokaryotes.
D) hypothetical or uncharacterized genome content of a species.
6. The advantage(s) of second -generation DNA sequencing compared to the
Sanger method are the result of
A) miniaturization of reaction size.
, B) increased computing power.
C) increased length of DNA sequences obtained.
D) miniaturization of reaction size and increased computer power.
7. Within Archaea and Bacteria, one megabase pair (Mbp) of DNA encodes
about ______ open reading frames.
A) 10
B) 100
C) 1,000
D) 10,000
8. Most mobile DNA co nsists of
A) transposable elements.
B) introns.
C) linear chromosomes.
D) plasmids.
9. Mobile DNA elements are more common in the genomes of
A) Archaea.
B) hyperthermophiles.
C) rapidl y evolving species.
D) pathogens.
10.The total genetic complement of all cells within a microbial communit y is
called a(n)
A) chromosomal island.
B) interactome.
C) metagenome.
D) metabolome.
11.The first genome sequenced was that of a(n)
A) virus.
