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BIO 245 Dr. Menon Exam 2 Questions with 100% Actual correct answers | verified | latest update | Graded A+ | Already Passed | Complete Solution $7.99   Add to cart

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BIO 245 Dr. Menon Exam 2 Questions with 100% Actual correct answers | verified | latest update | Graded A+ | Already Passed | Complete Solution

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BIO 245 Dr. Menon Exam 2 Questions with 100% Actual correct answers | verified | latest update | Graded A+ | Already Passed | Complete Solution

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  • June 19, 2024
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BIO 245 Dr. Menon Exam 2
2 domains of prokaryotes - ANS-Archaea and Bacteria

ubiquitous - ANS-present, appearing, or found everywhere

prokaryotic to human cell ratio in humans - ANS-10:1

good prokaryotic functions - ANS--stability and thriving of ecosystems
-metabolically flexible

halophiles - ANS-"salt-loving" archaea that live in environments that have very high salt
concentrations like the Dead Sea

how do prokaryotes help with soil? - ANS-formation and stabilization of soil through
breakdown of organic matter

Halobacterium salinarium, thought to be a bacterium, is actually an - ANS-archaean

metabolic flexibility means that prokaryotes can - ANS-easily switch from one energy
source to another

carbon fixation - ANS-process of converting inorganic CO2 gas into organic compounds

nitrogen fixation - ANS-process of converting nitrogen gas into ammonia

bad prokaryotic functions - ANS--human pathogens
-contaminate food
-greenhouse effect

symbiosis - ANS-any interaction between different species that are associated with
each other within a community

mutualism - ANS-two species benefit from each other

amenalism - ANS-one population is inhibited or harmed by a second population that is
not affected

commensalism - ANS-one species benefits while the other is unaffected

,neutralism - ANS-neither species benefits or is harmed

parasitism - ANS-one species benefits while harming the other

microbiome - ANS-all of the microorganisms that live in a particular environment, such
as a human body

resident microbiota - ANS-species of microbes that are always present on or in another
organism

why are resident microbiota important for human health? - ANS-compete with
pathogenic microorganisms for nutrients keeping them under control

transient microbiota - ANS-only temporarily found in human body

what alters transient and resident microbiota on human body - ANS-hygiene and diet

proteobacteria - ANS-largest and most diverse group of bacteria

5 classes of proteobacteria - ANS-alpha, beta, gamma, delta, epsilon

gram status of proteobacteria - ANS-all proteobacteria are gram-negative

Alphaproteobacteria - ANS--rhizobia
-agrobacterium
-brucella

zoonotic disease (zoonosis) - ANS-disease transmitted from animals to humans

betaproteobacteria - ANS--Eutrophs- copiotrophs, require copious amount of organic
nutrients
-Include some human pathogens

bordetella - ANS-betaproteobacteria that are non-motile coccobacilli

Bordetella pertussis - ANS-whooping cough

which class is most diverse gram-negative bacteria? - ANS-gammaproteobacteria

, gammaproteobacteria is discussed in _________ because class is too big - ANS-orders

pseudomonas - ANS-genus of gammaproteobacteria
-infect wounds and burns
-can be the cause of chronic UTIs
-cause respiratory infections in cystic fibrosis patients
-difficult to treat bc of antibiotic resistance
-form biofilms

what word describes pseudomonas? - ANS-problematic

proteobacteria groups that contain pathogens - ANS-alpha, beta, gamma

enterics - ANS-a common name for members of the family Enterobacteriaceae

where are enterics found in humans - ANS-the intestinal tract

coliforms - ANS-lactose fermenters and non-pathogenic

noncoliforms - ANS-cannot ferment lactose

what human pathogens fall under noncoliforms - ANS-salmonella, shigella

class deltaproteobacteria - ANS-relatively small class, includes bdellovibrio

bdellovibrio - ANS--deltaproteobacteria
-attacks other gram-negative bacteria
-attaches tightly
-penetrates outer layer
-reproduces in periplasm

bdella - ANS-leech

what is the smallest class of proteobacteria? - ANS-Epsilonproteobacteria

epsilonproteobacteria - ANS-helical or curved; microaerophilic; motile

examples of epsilonproteobacteria - ANS-Campylobacter
Helicobacter

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