An example of community is
A. this class.
B. the various kinds of plants, animals, and bacteria in a vacant lot.
C. bees in a hive.
D. the water, soil, and air in a farmer's field.
B. the various kinds of plants, animals, and bacteria in a vacant lot.
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The virulence factor of Yersinia pestis that is a protease that destroys C3b and C5a is
A. Yops. B. pla. C. F1. D. protein A.
Which of these is an example of hybridization?
a. breeding beagles and pugs to produce puggles b. breeding Hereford and Aberdeen Angus cattle to produce Black Baldy cattle c. breeding African Servals with domestic cats to produce Savannah cats d. breeding American Saddlebred and Arabian horses to produce National Show Horses
Gel electrophoresis separates DNA molecules based on variability in their
A) nucleotide sequence. B) affinity for agarose. C) charge. D) size. E) charge and size.
Identify the labeled structures on the human skeleton in the picture. 
A: ________B: ________C: ________D: ________E: ________F: ________G: ________H: ________I: ________J: ________K: ________L: ________M: ________N: ________O: ________P: ________
What will be an ideal response?