Learning: Section 11.2-11.5 – The Prokaryotes: Domains Bacteria and Archaea

Which of these bacteria is NOT in the phylum Actinobacteria?

neisseria

Which is true of the Rickettsias?

They are classified as alpha-proteobacteria.

They can cause human diseases often characterized by a rash.

They are obligate intracellular parasites.

They are typically transmitted by insects and ticks.

The cyanobacteria are believed to have played a key role in changing Earth's atmosphere due to their production of __________.

oxygen

The __________ constitute the largest subgroup of the proteobacteria.

gammaproteobacteria

Which type of organism might be found growing near hydrothermal vents on the ocean floor?

hyperthermophile

Which of the following statements concerning Mycobacterium tuberculosis is true?

it is aerobic

Which of the following organisms are classified into the Domain Archaea?

Sulfolobus

Halobacterium

Methanobacterium

Halococcus

Salmonella enterica is divided into many groups or "varieties," known as __________, based on serological tests.

serovars

For reproduction in Chlamydia, the bacterial cells are released from host cells as __________ bodies.

elementary

Which organism is an obligate anaerobe?

Clostridium perfringens

How many different bacterial species have been described?

5000

Some members of the genus Rhizobium are notable for their ability to __________.

form nodules in plant roots that allow nitrogen fixation

Some actinomycetes may resemble filamentous fungi because they __________.

produce asexual reproductive spores

Which of the following genera contains organisms that are psychrotrophic?

Listeria

Which of the following is an endospore-forming bacterium?

bacillus

The human gastrointestinal tract contains enteric bacteria but is an unlikely environment in which to find __________.

Streptomyces

Which of the following groups include bacteria that are pathogenic for humans?

Gammaproteobacteria

Alphaproteobacteria

Firmicutes

Betaproteobacteria

Mycobacteria are __________.

acid fast

Match the following bacteria with their correct gram reaction and morphology.

Gram-positive cocci arranged in chains- streptococcus

Gram-negative bacillus- Escherichia

Gram-positive cocci arranged in clusters-Staphylococcus

Gram-negative diplococcus- Neisseria

Which of the following statements is true of members of the order Lactobacillales?

They do not perform aerobic or anaerobic respiration.

Currently, none of the members of the __________ are known to include human pathogens.

archaea

The __________ are used in the commercial production of yogurt, buttermilk, and sauerkraut.

Lactobacilli

Which of the following organisms produce endospores?

Bacillus species

Due their commercial value as a source of antibiotics, over 500 species of the genus __________ have been described.

Streptomyces