Which of the following belong to the Chelicerata subphyla?

a. scorpions and horseshoe crabs
b. barnacles and lobsters
c. millipedes and centipedes
d. crayfish and isopods


a. scorpions and horseshoe crabs

Biology & Microbiology

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Which blood vessels carry oxygenated blood?  

A.  pulmonary veins B.  systemic veins (such as the femoral vein in your leg) C.  pulmonary arteries

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Two species of finches found on the same Galapagos island but feeding on different food sources is an example of _____- speciation.

A. allopatric B. sympatric C. prezygotic D. postzygotic E. outgroup

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The production of body fat

What will be an ideal response?

Biology & Microbiology

Which of the following best describes a carrier?

A. an insect harboring a pathogenic organism B. an organism that normally does not cause infection, but it has the potential to cause infection given the right condition C. an organism infected with a virus D. a microorganism capable of causing an infection E. a person who harbors a pathogen without exhibiting symptoms

Biology & Microbiology