The terrestrial realm of the biosphere is distributed into particular climatic regions called
A. niches.
B. habitats.
C. biomes.
D. populations.
E. communities.
Answer: C
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Cork cambium produces
a. vascular tissue. b. heartwood. c. vascular cambium. d. sapwood. e. secondary epidermis.
Sex chromosomes
a. determine gender. b. vary from one sex to another. c. carry some genes that have nothing to do with sex. d. were unknown to Mendel. e. are all of these.
Figure 15.1
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The following question refers to the figure above illustrating the initial steps in the formation of recombinant DNA.
What is used to cut the DNA in panels 1 and 2?
A. Restriction enzymes B. Reverse transcriptase C. DNA polymerases D. RNA polymerases E. DNA ligases
If this lab included culturing a sample taken by scraping your teeth, which species of streptococci might you grow on your blood agar plate?
A) S. pyogenes B) S. agalactiae C) E. faecium D) S. mutans