Chapter 10/11

All of the following are true about archaea except

• they are prokaryotes

• they lack peptidoglycan in their cell wallks

• some are thermoacidophiles;others are extreme halophiles

• they evolved before bacteria

A genus can best be defined as

• a taxon composed of families

• a taxon comprised of one or more species and below family

• a taxon belonging to a species

• a taxon comprised of classes

Which of these best sums up Animalia

• multicellular;no cell walls; chemoheterotrophic

• multicellular; cell walls; chemoheterotrophic

• multicellular; cellulose cell walls; usually photoautotrophic

• multicellular; cellulose cell walls; never photoautotrophic

Examples of Differential Staining include all of the following except...

• gram staining

• acid-fast staining

• simple staining

Which of the following is the best evidence for a three-domain system?

• There are three distinctly different cell structures

• There are three distinctly different cellular chemical compositions.

• There are three distinctly different Gram reactions.

• Some bacteria live in extreme environments.

Biochemical tests are used to determine

• staining characteristics

• amino acid sequences

• nucleic acid-base composition

• enzymatic activites

Which of the following is in the correct order from the most general to the most specific?

• kingdom-phylum-class-order-family-genus-species

• kingdom-phylum-class-order-family-species-genus

• species-phylum-class-order-family-genus-shape

• kingdom-phylum-class-order-family-gram-species

Yeasts belong to the kingdom

• animalia

• plantae

• protista

• fungi

In the scientific name Enterobacter aerogenes, Enterobacter is the

• specific epithet

• genus

• family

• order

A clone is

• genetically identical cells derived from a single cell

• genetically engineered cell

• a taxon composed of species

• a mound of cells on an agar medium