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Inside the membrane, the bacteria produce an exotoxin, which is a poisonous secretion that causes the life-threatening symptoms of diphtheria. The exotoxin is carried throughout the body in the bloodstream, destroying healthy tissue
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What are temperate phages?
A phage that can enter into lysogeny with its host. A phage that can become a prophage.
When a phage attaches to a bacterium what does the phage inject and what stays attached to the cell?
The part that remains outside is called the capsid or protein coat.
Does streptococcus pyogenes produce exotoxin?
yes
Does mycobacterium tuberculosis produce an exotoxin?
yes
Does bortella pertussis produce exotoxin?
yes
What is a virulence factor for diphtheria?
The virulence factor for diphtheria is an exotoxin named diphtheria exotoxin.
Tetanus of a muscle is thought to be caused by?
Tetanospasmin is thought to cause the symptoms of tetanus, it is a exotoxin produced by the Clostridium tetani bacterium.
What does a phage inject when it attaches to a bacterium?
Dna and phage body
What is the need for phage titration?
PHAGE TRTRATION IS DONE SO AS TO FIND THE AMOUNT OF PHAGE PARTICLES PRESENT IN THE STOCK PHAGE TRTRATION IS DONE SO AS TO FIND THE AMOUNT OF PHAGE PARTICLES PRESENT IN THE STOCK
A virus that reproduces in a bacterium is called?
phage
What is another term for a lysogenic phage?
temperate phage
When phage attaches to a bacteria the phage injects what?
DNA single
What is temperate phage superinfection immunity?
c. Repression of the phage genome - A phage coded protein, called a repressor, is made which binds to a particular site on the phage DNA, called the operator, and shuts off transcription of most phage genes EXCEPT the repressor gene. The result is a stable repressed phage genome which is integrated into the host chromosome. Each temperate phage will only repress its own DNA and not that from other phage, so that repression is very specific (immunity to superinfection with the same phage).Reference: http://pathmicro.med.sc.edu/mayer/phage.htm
What are temperate phages?
A phage that can enter into lysogeny with its host. A phage that can become a prophage.
When a phage attaches to a bacterium what does the phage inject and what stays attached to the cell?
The part that remains outside is called the capsid or protein coat.
Does streptococcus pyogenes produce exotoxin?
yes
Does mycobacterium tuberculosis produce an exotoxin?
yes
