Random Info

Question 1

transformation

Answer 1

take up naked DNA from environment

SHiN

Question 2

conjugation

Answer 2

uses sex pilus to transfer F+ plasmid (dsDNA) to F- = NO transfer of chromosomal genes

Hfr: F+ plasmid gets incorporated into bacterial chromosomal DNA = MAY transfer flanking chromosomal genes with the plasmid

Question 3

transposition

Answer 3

segment of DNA that can jump from one location to another = MAY transfer flanking chromosomal genes when excision occurs

can transfer genes from plasmid to chromosome, vice versa

Question 4

generalized transduction

Answer 4

a “packaging” event

LYTIC phage infects bacterium, leading to cleavage of bacterial DNA – parts of bacterial chromosomal DNA may become packaged into viral capsid = phage infects another bacterium and transfer those genes

RANDOM GENES ACCIDENTALLY PACKAGED

Question 5

specialized transduction

Answer 5

an “excision” event

LYSOGENIC phage infects bacterium and incorporates its viral DNA into the bacterial chromosome. When phage DNA is excised, flanking bacterial genes may be excised with it = packaged into viral capsid; phage infects another bacterium and transfer those genes

SELECT GENES NEAR VIRAL INSERTION SITE PACKAGED

Question 6

jarisch-herxheimer reaction

Answer 6

flu-like syndrome immediately after antibiotics are started - due to killed bacteria releasing pyrogens

Question 7

“anchovy paste” exudate

Answer 7

Entamoeba histolytica

Question 8

compare the bite of T. brucei (g/r) vs T. cruzi

Answer 8

T. brucei (g/r): tsetse fly = painful

T. cruzi: reduviid bug (kissing bug) = painless