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

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

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

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

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

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Microbial Genetics
Proteomics is

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

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