Exam 20: The Diversity of Prokaryotes and Viruses

Assume a genetic analysis of a sick animal's DNA indicates that part of one chromosome does not belong to the animal. It is foreign DNA and is not similar to any of the animal's normal genes. It most likely comes from a(n)

Nitrogen- fixing bacteria remove nitrogen from plants and return it to the soil.

Bacterial endospores are easily damaged by heat and drying.

Lyme disease is caused by

Biofilms are the immune system's way to keep pathogens from colonizing a host.

Mobile prokaryotes can move around with the help of

The bacterial cell wall can contain .

Cyanobacteria are prokaryotes.

Intestinal bacteria are necessary for plant- eating animals to digest

The bacterium in the figure contains a(n)

Which virus attacks white blood cells?

The classification of bacteria has historically been based on

The oldest endospores to be revived and cultured to produce live bacteria are

Which of the following is NOT alive?

Oil spills are sprayed with bacterial cultures in order to

Some bacteria use H₂S instead of H₂O in photosynthesis, and they release

A virus basically consists of