Which of the following is NOT a chelicerate?
a. tick
b. mosquito
c. spider
d. horseshoe crab
e. scorpion
B
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F- strains of Escherichia coli
A) do not have an F factor. B) have the F factor as a plasmid. C) have an integrated F factor. D) transfer the F factor to other strains at a high frequency.
The Protosotomia include (select all that apply)
A. annelid worms B. mollulsks C. sea anemones D. arthropods E. chordates
Which of the following tissue types is specialized to conduct electrical signals?
A. Nervous B. Muscle C. Epithelial D. Connective E. Both nervous and epithelial tissue are correct.
What feature do the carbon and nitrogen cycles have in common?
A. a large atmospheric component B. involvement in global climate change C. often a limiting nutrient D. mostly local cycling E. many microbes involved in cycling