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

structural genomics
functional genomics
comparative genomics
proteomics

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

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

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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 its cellwall contains radioactive elements
Because it has unique DNA repair mechanisms
Because it has many copies of genes encoding DNA repair

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