Microbial Genetics
In the time since E. coli and Salmonella diverged evolutionarily

there has been little change in either genome
E. coli has acquired many genes via horizontal transfer
E, coli has lost approximately 50% of its genome
none of these

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Microbial Genetics
Which of the following theory is supported by the genomic sequence of the obligate intracellular parasite Rickettsia prowazekii ?

All bacteria evolved from viruses
Parasitic bacteria have very large genomes
Mitochondria have evolved from endosymbiotic bacteria
Parasites have a definite genomic sequence similar to viruses

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Microbial Genetics
Proteomics is

the study of algal genomes
the study of the entire collection of proteins expressed by an organism
a branch of quantum physics dealing with proteins
the study of formation of lipo-protein in animals

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Microbial Genetics
Why Deinococcus radiodurans is able to survive massive exposure to radiation?

Because it has many copies of genes encoding DNA repair
Because its cellwall contains radioactive elements
Because it produces a thick shell which acts as a shield from the radiation
Because it has unique DNA repair mechanisms

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