Fimbriae, which is a virulence factor causes which of the following consequences?
A. Phagocytic escape
B. Activation of cytokine production
C. Attachment to host cell
D. Invasion of host tissues
E. Activation of adenylate cyclase
Ans: C. Attachment to host cell
You might also like to view...
A researcher exposes a nonvirulent strain of Streptococcus pneumoniae to heat-killed cells of a virulent strain. After
exposure, the bacterial cells will be ____.
a. transduced b. artificially transformed c. transformed d. nonvirulent e. conjugated
In order to transfer gene a to an F- cell, the sex pilus must be in place for at least ____ minutes
a. 1 b. 2 c. 3 d. 4 e. 5
________ digestion is the process by which food particles are exposed to enzymes that break them down into smaller subunits
Fill in the blank(s) with correct word
Why do plants growing outside often have shorter and thicker stems than plants of the same species grown indoors?
A. The outdoor plants are subject to touch by animals and other plants and are exhibiting a thigmotropic response. B. The plants inside have a more constant source of light and therefore a higher level of phytochrome. C. The outdoor plants are subject to mechanical stresses and they are exhibiting a thigmomorphogenic response. D. The indoor plants have elevated levels of auxin and are therefore taller than the outside plants.