One partner benefits, the other is not harmed.

Which best defines a biological species?

Which form of reproduction does a donor cell pass DNA to a recipient?

Which of the following is a form of asexual reproduction used by bacteria?

lichen.jpg This picture is what sort of lichen?

Disease that temporarily becomes prevalent and widespread in an animal population.

phylogenetic tree(2).png  Using the phylogenetic tree above, which point represents the common ancestor of species A and D?

Which Supergroup consists of mostly unicellular, non-photosynthetic organisms with shells (or skeletons) have tubular cristae in their mitochondria, and make up the majority of the protozoan fossils? (example: Radiolarians)

Bacteria secrete a sticky substance called mucilage which forms a biofilm that can allow for the evasion of host defenses and hold bacterial colonies together.

Disease that regularly affects animals in a particular area or at a particular season.