MIC 205-Ch 11 connect questions

Cyanobacteria

-Gram-negative bacteria -inhabit a wide range of environments -photosynthetic and can convert nitrogen gas into ammonia & can be incorporated into cell material

Life cycle of Bdellovibrio species

-bacteria strikes and attaches to its prey -it rotates and releases digestive enzymes to bore a hole into cell wall -elongates in the periplasm -divides into several motile daughter cells which are released when the host cell lyses

Morphology of cyanobacteria

-can be unicellular -cocci rods or spiral shaped -can form filamentous multicellular associations

Sulfur-oxidizing bacteria

-gram-negative -rods or spirals -sometimes grow in filaments -obtain energy by oxidizing elemental sulfur and reduced sulfur compounds

The Genus Neisseria

-gram-negative bacteria -cocci in pairs -microbiota of animals-grow on mucous membranes -aerobes but some can grow anaerobically is a suitable terminal electron acceptor such as nitrite is present

________ and _______ the most common Gram-positive bacilli that form spores

Bacillus and Clostridium

Archaea thrive in what type of environment?

Extreme conditions

Scientists not understand the true diversity of microbial life and have determined the relationships between the millions of prokaryotes that exist

False

Scientists are interested in studying the growth of extreme __________ that grow near volcanic vents and fissures because these conditions are thought to mimic early earth's environment.

Thermophiles

Methane gas can be collected and used for generating electricity

True

Chlamydia trachomatis causes

a common sexually transmitted disease

An atmosphere that lacks O2 is called

anoxic

Chlamydophila pneumoniae causes

atypical pneumonia

_________ bacteria emit light and can form symbiotic relationships with some types of fish and squid

bioluminescent

A __________ of cyanobacteria in a stagnant lake can result in a foul smelling scum composed of dead and decaying cells

bloom

All of the following are characteristics shared by Helicobacter and Campylobacter except microaerophilic Gram-negative curved rods can cause diarrheal disease in humans

can cause diarrheal disease in humans

What are characteristics of cyanobacteria that live in aquatic environments?

can move vertically through a water column using gas vesicles and can form blooms when a large number of them accumulate

Oblgate Aerobes

can only use respiration, and not fermentation, to obtain energy

Myxobacteria have the ability to:

digest some fungi and algae digest bacteria degrade complex organic substances

Because most pseudomonas species are strict aerobes, they do not ________ carbohydrates to obtain energy

ferment

An anaerobic chemoorganotroph that uses glucose for energy and pyruvate as its terminal electron acceptor is undergoing:

fermentation

Members of the genus Vibrio:

include pathogens such as V. cholerae and V. vulnificus

Lactococcus

includes species used to make cheese

Lactobacillus

members include microbiota in the mouth and in the vagina during childbearing years

Enterococcus

members typically inhabit the intestinal tract

The normal habitat of Bacteroides fragilis in the human include:

mouth, intestine, and genital tract

Mycobacterium species stain poorly because their cell walls contain ___________

mycolic acid

Organism that cannot reproduce outside of the host cell

obligate intracellular parasite

Aerobic chemolithotrophs

obtain energy by oxidizing reduced inorganic chemicals, using O2 as a terminal electron acceptor

Aerobic chemoorganotrophs oxidize __________ compounds to obtain energy

organic

Chlamydiophila psittacosis causes

psittacosis (a type of pneumonia)

Treponema pallidum causes the sexually transmitted disease in humans called

syphillis

Members of the genus Argobacterium attach to a wounded plant and transfer a portion of their DNA to the plant cell, which induces the plant to produce growth hormones. resulting in the growth of a ____________

tumor

Chemoorganotrophs

use organic compounds to obtain energy.