Analysis of the Genome and Transcriptome of the Highly Radiation

question 63

Multiple Choice

Analysis of the genome and transcriptome of the highly radiation resistant bacterium Deinococcus radiodurans has revealed all of the following EXCEPT

• A)its genome consists of two circular chromosomes and two plasmids.
• B)it has more DNA repair genes than
• C)genes whose products are involved in DNA replication and recombination are dramatically up-regulated after irradiation.
• D)genes whose products are involved in cell wall metabolism and cellular transport are dramatically up-regulated after irradiation.
• E)coli.

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Definitions:

Condensed Structural Formula

A method of representing the molecular structure of a compound in a simplified manner, showing how atoms are bonded without detailing the actual bond locations.

Resonance Structures

Different Lewis structures for the same molecule that depict the delocalization of electrons within the molecule.

Major Contributor

In resonance theory, refers to the resonance structure that makes the largest contribution to the overall hybrid structure based on stability.

Formal Charges

Formal charges refer to the charge assigned to an atom in a molecule, assuming that electrons in all chemical bonds are shared equally between atoms, despite the actual electronegativity of the atoms.