This holds an organisms hereditary information.

DNA hold an organisms hereditary information.

Explanation:

DNA stands for deoxyribonucleic acid.DNA contains genes that are specific sequence of nucleotide that code some proteins or other gene products.Genes are specific to an organism and carry the hereditary information. Genes are responsible for the trait or characteristic of an organism.DNA is the bearer of hereditary units for most organisms except in case of some Viruses.In viruses RNA holds the hereditary information.

This bacteria must be very strong as it has a large amount on antibiotic targeting it. this bacteria could be one of many different types and it is very hard to tell which one with out more information.