Exam (elaborations)
MCB 3020 FINAL EXAM QUESTIONS AND ANSWERS
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MCB 3020 FINAL EXAM QUESTIONS AND ANSWERS
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Name: Score:156 Multiple choice questions
Term 1 of 156
use of antibiotics during the first few months of life increases the risk of developing ____
asthma
inflammatory bowel disease
hypertension
diabetes mellitus
Term 2 of 156
presence of endotoxin can be detected by the ____
Polymerase chain reaction (pcr)
Blood culture test
Limulus amoebocyte lysate (LAL) assay
Enzyme-linked immunosorbent assay (elisa)
Term 3 of 156
metagenomics
considers the methods of genomic, transcriptomic, proteomic, and metabolomic analysis
required to unveil patterns of microbial diversity
Breast milk has oligosaccharides that promote their colonization
A culture-independent method that analyzes pooled DNA or RNA from environmental
sample containing organisms which have not been identified
Genome-wide study of the structure, function, and regulation of an organism's proteins
,Term 4 of 156
what is the most dominant bacterial group in the urogenital tract
proteobacteria
streptococcus
lactobacillus
bacteroides
Term 5 of 156
what is the primary mechanism by which N2 is produced biologically
ammonification
nitrogen fixation
denitrification
nitrogen cycle
Term 6 of 156
enterotoxins are ____
cytotoxins that destroy red blood cells
exotoxins whose activity affects the small intestine
endotoxins that damage the liver
neurotoxins that affect the brain
Term 7 of 156
habitat
the seasonal changes in an environment
portion of an ecosystem where a community could reside
the total number of species in an ecosystem
the average temperature of an ecosystem
,Term 8 of 156
____ breaks clots down
collagen
streptokinase
fibrin
keratin
Term 9 of 156
prebiotics
vitamins that are synthesized by gut bacteria
fats that contribute to weight gain
typically carbohydrates that are indigestible by human hosts, but provide nutrition for
fermentative gut bacteria
proteins that are easily absorbed by the human body
Term 10 of 156
what is the most dominant bacterial group in the saliva
proteobacteria
streptococcus
bacteroides
lactobacillus
Term 11 of 156
most of the primary productivity in the open oceans is due to ____
chemosynthesis by deep-sea bacteria
respiration by marine mammals
decomposition by detritivores
photosynthesis by prochlorophytes
, Term 12 of 156
black band disease is composed of ____
cyanobacteria, sulfide oxidizing bacteria, sulfate reducing bacteria and heterotrophic
bacteria
only pathogenic bacteria that cause coral disease
a mixture of viruses and fungi affecting coral reefs
organic compounds that promote coral growth
Term 13 of 156
____ are the most abundant oxygenic phototroph in the oceans
prochlorococcus
cyanobacteria
diatoms
green algae
Term 14 of 156
the smallest genomes belong to ____
viruses that infect bacterial cells
fungi that thrive in extreme environments
large multicellular organisms with complex systems
parasitic or endosymbiotic prokaryotes
Term 15 of 156
____ was discovered in the 1980s and is an acid-resistant bacteria found in the gastric mucosa
staphylococcus aureus
salmonella enterica
helicobacter pylori
escherichia coli
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