Bio 322 Quiz 2 Questions With Complete Solutions
16S rRNA sequencing Correct Answers -less than 97%
between strains indicate that they represent different species
-97% or higher 16S rRNA sequence identity, DNA relatedness
must be used to determine whether strains belong to different
species
Altiarchaea Correct Answers anoxic freshwater springs,
commensal with sulfide-oxidizing bacteria, carbon fixing
(chemoautotroph)
-first thought to be euryachaota but later found to be DPANN
Average Nucleotide Identity Correct Answers of all protein-
coding genes shared by two differetn bacteria (core genomes
comparison). It offers greater resolution than either MLST or
16S rRNA sequencing
Bacillus (firmicutes) Correct Answers uses sporulation
-hijacking normal reproduction
-one dies other becomes a spore
-not usually present in gram negative
-occurs due to nutrient deprivation
-NOT triggered in response to environmental stress
Bacterial archaeal consortium Correct Answers responsible for
the anaerobic oxidation of methane
Bdellovibrio Correct Answers Attacks other gram-negative
bacteria by colliding with them at high speeds
, Biggest genomes: Myxobacteria Correct Answers Sorangium
cellulosum
-displays cellular differentiation (fruiting bodies)
-can remotely sense objects
-can hunt prey in coordinated attacks
Biological species Correct Answers interbreeding natural
populations
Buchnera aphidicola Correct Answers exapmle of obligate
symbiont
-lives in specialized aphid cells
-can't repair DNA
-no lipopolysacharides
-overproduces amino acids
Burst algorithm Correct Answers -identifies mutually exclusive
groups of related genotypes in the population
-attempts to identify the founding genotype of each group
-predicts the desent from the predicted founding genotype to the
other genotypes in teh group, displaying the output as a radial
diagram, centred on the predicted founding genotype
Carotenoids Correct Answers Synthrophic relationship with
bacteria
-can't cultivate easily
Caulobacter crescentus Correct Answers binary fission but two
daughter cells are not identical
-uses stalk to adhere to the surface and then divides
16S rRNA sequencing Correct Answers -less than 97%
between strains indicate that they represent different species
-97% or higher 16S rRNA sequence identity, DNA relatedness
must be used to determine whether strains belong to different
species
Altiarchaea Correct Answers anoxic freshwater springs,
commensal with sulfide-oxidizing bacteria, carbon fixing
(chemoautotroph)
-first thought to be euryachaota but later found to be DPANN
Average Nucleotide Identity Correct Answers of all protein-
coding genes shared by two differetn bacteria (core genomes
comparison). It offers greater resolution than either MLST or
16S rRNA sequencing
Bacillus (firmicutes) Correct Answers uses sporulation
-hijacking normal reproduction
-one dies other becomes a spore
-not usually present in gram negative
-occurs due to nutrient deprivation
-NOT triggered in response to environmental stress
Bacterial archaeal consortium Correct Answers responsible for
the anaerobic oxidation of methane
Bdellovibrio Correct Answers Attacks other gram-negative
bacteria by colliding with them at high speeds
, Biggest genomes: Myxobacteria Correct Answers Sorangium
cellulosum
-displays cellular differentiation (fruiting bodies)
-can remotely sense objects
-can hunt prey in coordinated attacks
Biological species Correct Answers interbreeding natural
populations
Buchnera aphidicola Correct Answers exapmle of obligate
symbiont
-lives in specialized aphid cells
-can't repair DNA
-no lipopolysacharides
-overproduces amino acids
Burst algorithm Correct Answers -identifies mutually exclusive
groups of related genotypes in the population
-attempts to identify the founding genotype of each group
-predicts the desent from the predicted founding genotype to the
other genotypes in teh group, displaying the output as a radial
diagram, centred on the predicted founding genotype
Carotenoids Correct Answers Synthrophic relationship with
bacteria
-can't cultivate easily
Caulobacter crescentus Correct Answers binary fission but two
daughter cells are not identical
-uses stalk to adhere to the surface and then divides
