Erythrogenic toxin, hyaluronidase enzyme, and hemolysins S and O are extracellular products of:
a. E. faecalis.
b. S. pneumoniae.
c. S. pyogenes.
d. S. agalactiae.
C
All of these descriptions are true of S. pyogenes.
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Which of the following adhesive molecules are found in animal tissues?
A. cadherins and integrins B. pectins C. cadherins D. integrins E. cadherins, integrins, and pectins
The part of the brain that is responsible for homeostatic control of most organs is the
A. cerebellum. B. hypothalamus. C. medulla oblongata. D. pons. E. cerebrum.
Seeds can be described as ‘a little plant in a box with its lunch’. Which parts of the seed correspond to the elements of
this description? Fill in the blank(s) with the appropriate word(s).
Which of the following factors is LEAST likely to attract pollinators to a flower?
A. color of the flower in UV light B. the amount of nectar C. taste of the ovules D. color of the flower in visible light E. odor