Classification of Microorganisms

Taxonomy is:

• The art or operation of preparing, stuffing, and mounting the skins of dead animals for exhibition in a lifelike state.

• An identification scheme for pathogenic bacteria.

• The science of the classification of organisms

• A science that provides a means to identify organisms

• The boredom that results from doing your taxes.

What is a domain?

• The most general taxon in the taxonomic hierarchy – includes kingdoms, phyla, classes, etc.

• The natural habitat of an organism

• The specific epithet of an organism

• A group of closely related organisms within the same species

Most domains consist of prokaryotic organisms.

• True

• False

Binomial nomenclature means:

• A specific organism may go by more than one name (like Streptococcus pneumonia is also known as pneumococcus)

• Growth and death curves are always described by a logarithmic progression

• Organisms have two parts to their scientific name

• Cladograms consist of a minimum of two organisms

A group of organisms that interbreeds within the group but not with organisms outside the group is:

• A species

• A strain

• A genus

• A eukaryotic species

• A bacterial strain

Domain – kingdom – phylum – class – order – family – genus – species.

• True

• False

Tags

NGSS.HS-LS1-2

Which of the following is the best definition of a prokaryotic species?

• A group of cells derived from the same parent cell – all of the offspring in a single colony

• A group of related genera

• A group of cells that possess the same H and O antigens

• A group of cells that can interbreed

• A group of cells with similar characteristics

Which of the following best represents organisms that make up a strain of prokaryotic cells?

• A mixed culture

• All of the colonies on a plate streaked for isolation from a mixed culture

• All of the colonies on a plate streaked for isolation from a pure culture

• All of the cells in a single colony

Which of the following characterizes the Domain Archaea?

• Prokaryotic cells; no linkages in membrane lipids

• Eukaryotic cells; ester linkages in membrane lipids

• Prokaryotic cells; ether linkages in membrane lipids

• Complex cellular structures

• Multicellular

All of the following are false about the archaea except:

• They are eukaryotes.

• They have peptidoglycan in their cell walls.

• They are never found in extreme environments.

• Evidence suggests they evolved from eukaryotes.

• Some produce methane from carbon dioxide and hydrogen.