Gene

A sequence of genetic material that provides the information to make a specific protein

Genome

The entire genetic information of an organism

Gram-negative bacteria

A category of bacteria that do not produce a positive result with a violet dye staining technique (bacteria that do appear violet are referred to as gram-positive). Gram-negative bacteria include Escherichia coli, Acinetobacter, Pseudomonas, and Klebsiella.

Gram-positive bacteria

A category of bacteria that produce a positive result with a violet dye staining technique, due to the presence of thick layer of peptidoglycan in their cell walls (bacteria that do not appear violet are referred to as gram-negative). Gram-positive bacteria include the streptococci, staphylococci, and the bacterium that causes anthrax.