What virulence factor helps V. cholerae adhere to the surface of our intestine?
A. Enterotoxins
B. Mucinase
C. Lipase
D. Loss of Normal Flora
E. Diarrhea
F. Edema toxin
Answer: B. Mucinase
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Skeletal muscles are connected to bones by cords of connective tissue called
a. muscle fibers. b. sarcomeres. c. tendons. d. ligaments. e. myofibrils.
Analogous structures form because they evolve as a response to similar environmental pressures.
a. Organisms that share a single ancestor b. Species that remain in the same location over time c. Species that evolved separately from their parents d. Organisms that mutated to survive
__________ are aquatic heterotrophs and autotrophs
with a cellulose covering. Fill in the blank(s) with the appropriate word(s).
Which type of vessel is one cell layer in thickness?
a. artery b. arteriole c. capillary d. venule e. vein