Which of the following antigen types found in gram-negative enterics is mismatched?
A. K antigen - capsule
B. O antigen - cell wall
C. H antigen - flagellar
D. All of the choices are correct matches.
Answer: D
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Which of the following is NOT associated with leaf abscission?
A. development of suberin impregnated cork cells B. cell wall development C. development of a separation layer D. water stress E. deciduous trees
How are species-area relationships traditionally plotted?
A. on a log-log plot. B. on a bar graph. C. based on a source pool. D. using a Shannon diversity index. E. None of these choices are correct.
Which sterilization technique involves cutting the vas deferens on each side to prevent sperm from leaving the body?
A) hysterectomy B) tubal ligation C) vasectomy D) testicular deactivation
________ are found halfway between the equator and poles, cover the interiors of major continents, and have been largely converted to agricultural use.
A. Savannas B. Temperate rain forests C. Grasslands D. Taigas