MCPHS Microbiology Self Paced Questions and Answers Latest 2024/2025 with complete solutions
7 views 0 purchase
Course
MCPHS Microbiology Self Paced
Institution
MCPHS Microbiology Self Paced
Which of these conditions would NOT affect the ability of Streptococcus mutans to attach to teeth? -
The absence of Actinomyces, a bacterium that can be part of dental plaque
cell wall components - M proteins: mediates attachment and resists phagocytosis (strep.
pyogenes)
Opa protein: assist at...
MCPHS Microbiology Self Paced
Which of these conditions would NOT affect the ability of Streptococcus mutans to attach to teeth? -
The absence of Actinomyces, a bacterium that can be part of dental plaque
cell wall components - M proteins: mediates attachment and resists phagocytosis (strep.
pyogenes)
Opa protein: assist attachment and recept mediated endocytosis, inhibs helper t cells (n. gonorrhoeae)
Invasins: Penetration into the host cell cytoskeleton - Salmonella alters host actin to enter a host
cell
Listeria uses actin to move from one cell to the next
Direct damage caused by - disrupting the host cells function
produces waste products
toxins
induce hypersensitive reactions
damage immediate vicinity
use hosts nutrients (iron) -siderophores
Siderophores - proteins that free host stores of iron
Toxin - substance that contributes to pathogenicity
Toxoid - inactivated toxin used in a vaccine
Antitoxin - antibodies against a specific toxin
, Endotoxins - the lipid portions of lipopolysaccharides (LPS) that are part of the outer membrane
of the cell wall of gram-negative bacteria. The endotoxins are liberated when the bacteria die and the
cell wall breaks apart.
PART OF BACTERIAL CELL NOT A PRODUCT
Lipid NOT proteins
all produce same SS
Exotoxins - specific for a structure or function in host cell
Can be gram pos or neg
Are proteins, enzymes
secreted into medium during log phase
most lethal
produce SS
Classification of exotoxins - 1. Based on host cell attacked (cardiotoxin)
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through EFT, credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller PatrickKaylian. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for R148,52. You're not tied to anything after your purchase.
