Spinal nerves emerging from the spinal cord are named for:
A) the organ they supply.
B) the portion of the vertebral column around them.
C) strictly the number sequence 1—30.
D) their basic function.
Answer: B
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The physical traits of an organism are called its __
A. phenotype B. allele C. genotype D. gene
At higher altitudes:a
the concentration of oxygen decreases. b. the concentration of carbon dioxide increases. c. the partial pressure of oxygen decreases. d. the partial pressure of carbon dioxide increases. e. there is no change in the concentration or partial pressures of atmospheric gases.
A fish known for high levels of internal and external parasites is the:
A. billfish. B. tuna. C. ocean sunfish. D. shark. E. jellyfish.
Which enzyme seals together new nucleotides attached to a parent strand of DNA?
A) DNA polymerases B) DNA ligases C) hydrogenases D) helicases