Microbial Genetics
Studies of similarities and differences among the genomes of multiple organisms is carried out in

comparative genomics
proteomics
functional genomics
structural genomics

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

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

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Microbial Genetics
Why the bacterium Treponema pallidum is difficult to culture?

Because it is unable to use carbohydrates as an energy source
Because it lacks the genes needed for TCA cycle and oxidative phosphorylation
Because it requires a great deal of water to reproduce
Because it requires extremely low temperature at which water freezes

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

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

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