Microbial Genetics
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In
the time since E. coli and Salmonella diverged evolutionarily _____________.
a. there
has been little change in either genome
b. E.
coli has acquired many genes via horizontal transfer
c. E, coli has lost approximately 50% of its genome
d. none
of these
Which
of the following theory is supported by the genomic sequence of the obligate
intracellular parasite Rickettsia prowazekii ?
a. Parasitic
bacteria have very large genomes
b. Parasites
have a definite genomic sequence similar to viruses
c. Mitochondria have evolved from
endosymbiotic bacteria
d. All
bacteria evolved from viruses
The
physical nature of genomes is studied under _____________.
a. structural genomics
b. comparative
genomics
c. proteo
genomics
d. functional
genomics
The
species of bacteria, which possesses 250 genes for lipid biosynthesis is
_____________.
a. M.
genitalium
b. M. tuberculosis
c. E.
coli
d. H.
influenzae
Why
the bacterium Treponema pallidum is difficult to culture?
a. Because
it requires a great deal of water to reproduce
b. Because
it is unable to use carbohydrates as an energy source
c. Because it lacks the genes needed for TCA
cycle and oxidative phosphorylation
d. Because
it requires extremely low temperature at which water freezes
What
is the range of minimum set of genes required for life?
a. 50-100
genes
b. 250-350 genes
c. 1000-1500
genes
d. 1500-2000
genes
The
flow of genetic material in microbial cells usually takes place from
_____________.
a. RNA
through DNA to proteins
b. proteins
through RNA to DNA
c. DNA through RNA to proteins
d. none
of these
Which
of the following is used for determining the location of specific genes within
the genome?
a. Genomics
b. Annotation
c. Cloning
d. Proteomics
Proteomics
is _____________.
a. the study
of algal genomes
b. a
branch of quantum physics dealing with proteins
c. the
study of formation of lipo-protein in animals
d. the study of the entire collection of
proteins expressed by an organism
Which
of the following is concerned with the management and analysis of biological
data using computers?
a. Bio-physics
b. Bioinformatics
c. Genomics
d. Biomechanics
Which
type of genomics studies the transcripts and proteins expressed by a genome?
a. Comparative
genomics
b. Structural
genomics
c. Proteo
genomics
d. Functional genomics
Which
of the following is the study of the molecular organization of genomes, their
information content and the gene products they encode?
a. Genetics
b. Ergonomics
c. Genomics
d. Bioinformatics
The
word, used for the small solid supports onto which are spotted hundreds of
thousands of tiny drops of DNA that can be used to screen gene expression, is
_____________.
a. southern
blot
b. cloning
library
c. DNA microarrays
d. northern
blot
Which
of the following organisms has the smallest genome?
a. H.
influenzae
b. M. genitalium
c. M.
tuberculosis
d. None
of these
Studies
of similarities and differences among the genomes of multiple organisms is
carried out in _____________.
a. comparative genomics
b. proteomics
c. functional
genomics
d. structural
genomics
Why
Deinococcus radiodurans is able to survive massive exposure to radiation?
a. Because
it produces a thick shell which acts as a shield from the radiation
b. Because
it has unique DNA repair mechanisms
c. Because
its cellwall contains radioactive elements
d. Because it has many copies of genes
encoding DNA repair