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.
