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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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
Skeletal muscles are connected to bones by cords of connective tissue called
a. muscle fibers. b. sarcomeres. c. tendons. d. ligaments. e. myofibrils.