How can capsules enable bacteria to evade the immune system?

A) Capsules block the complement biding sites on the surface of the pathogen.
B) A capsule is a superantigen that distracts the immune system.
C) Capsules can bind up IgA, rendering it inactive.


Ans: A) Capsules block the complement biding sites on the surface of the pathogen.

Biology & Microbiology

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Populations of different species comprise a(n) ____

a. populations b. biosphere c. ecosystem d. community e. evolution

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Organisms that produce beta-lactamase can be considered resistant to all of the following antibiotics EXCEPT:

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Imagine that you could microinject cytochrome c into the cytosol of both wild-type cells and cells that were lacking both Bax and Bak, which are apoptosis-promoting members of the Bcl2 family of proteins

Would you expect one, both, or neither of the cell lines to undergo apoptosis? Explain your reasoning.

Biology & Microbiology