Choose the statement that is true about DNA.
A. It forms a double helix.
B. It is a polymer of nucleotides.
C. It exhibits base pairing.
D. All of these are correct.
Answer: D
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The tissue containing nerves, blood, and lymph vessels in teeth is known as the:a
dentin. b. cementum. c. enamel. d. tooth socket. e. pulp cavity
Which of the following represents a testcross?
a. RrMm ? RrMm b. RRMM ? rrmm c. rrMM ? RRmm d. RrMm ? rrmm
When fungi begin to grow from a spore, they send out a single filament called
a) a pilius b) a mycelium c) a hypha d) a gill e) a nodule
Temperate grasslands and temperate deciduous forests are two different biomes that are located in the same latitudes. Which one of the following abiotic conditions is most likely to account for the differences in their community composition?
A. Sunlight B. Temperature C. A rain shadow D. Precipitation E. Soil nutrients